Good to see this vid. Working in equipment calibration one tip I do have is to have one dial type guage sent for calibration but no need to pay for adjustment, just ask for a result sheet. Then put this unit aside as a reference unit to compare others against once a year or so.
@sixtyfiveford
7 жыл бұрын
Great tip.
@BourneAccident5 жыл бұрын
HEY! 65FORD IT WORKED! I had a brand new gauge about 8 lb. off and good for nothin'. Your video did the trick. Perfect. I've said this before on your channel... I wish we were neighbors. I've learned so many things from you. Very helpful. Thanks once again.
@sixtyfiveford
5 жыл бұрын
Thanks. That's awesome.
@scarpia5195 жыл бұрын
I used this procedure to calibrate a Harbor Freight filler gauge to a Winters PFQ series industrial gauge spec'd to +/- 1.5%. It is very easy to do and highly recommended. The actual spreading or squeezing of the 'loop' is minimal so you have to be gentle with your tools.
@sixtyfiveford
5 жыл бұрын
Awesome.
@K-G-S_663 жыл бұрын
So i went and bought a classic vintage tire gauge and was the only one available and needed adjustment so i got a good deal 4 years later still this video helped Thx man have a wonderful day
@sixtyfiveford
3 жыл бұрын
Great job!
@HiFiInsider13 күн бұрын
i recently bought a Milton digital and compared it to my vintage US made Milton analog and the digital is spot on.
@TheVirginiaStew7 жыл бұрын
great 8 minutes I ever spent, we have a ton of gauges throughout the farm on all our poultry equipment and also in my shop...so now when I have a lazy snowy winter day I will head out to the turkey barns and the shop and spend a day checking all the gauges...it will also give me something to film...why didnt I think of this.....bet you and the Mrs were sitting around a cozy fire saying, "babe I need a KZread video topic" and she said: "while I am thinking of it... my tires on my car seem a little low"....You said "Thanks"
@sixtyfiveford
7 жыл бұрын
Hey Thanks.
@johnmariano475 жыл бұрын
Thanks for this great video. It is refreshing to hear the word "bourdon" gauge again outside of school. Interesting to note that the graduations of a particular gauge play an important role too. The less the graduations of the gauge, the more inaccuracy likely there is compared from one with more (200 psi vs 160psi).
@sixtyfiveford
5 жыл бұрын
Thanks, I'm glad you liked it.
@scarpia5195 жыл бұрын
This video inspired me to calibrate my tire gauge/filler similar to what he is using. I calibrated my gauge to read the same value as my car's ('98 Corvette) TPMS reading. I have since ordered but not yet received a commercial grade 0-60psi oil filled mechanical gauge (Winters p/n PFQ803R1) that is spec'd to +/- 1.5% accuracy. I will use this new gauge as a reference and compare all my gauges to it. I don't plan on calibrating my five air compressor regulator gauges as tire inflation is more important to me than air tools. I have not been able to verify what the accuracy of the TPMS sensors but there should be an ASME standard for such devices, my guess is +/- 2-3% for automotive applications.
@captlarry-3525
Жыл бұрын
we get 10-20% speedo errors...why think the tire dongles are better ? I like your winters gauge idea best.
@Tsiikki
8 ай бұрын
@@captlarry-3525speedo errors are mandatory. Car cannot show lower speed than you're going. They also need to consider that car can have different size wheels from the factory or the user can also install bigger wheels.. In some cars you can code the installed size or so. Many times car do know the exact speed or very close, but there's algorithm to add some. For TPMS it's safety feature and I haven't looked exact spec but I believe it's close. Probably how the TPMS gets it's info (passive, active, etc) there's some difference in accuracy.
@aleblanc35477 жыл бұрын
Awesome...I've got a similar dial-type tire pressure gauge. It's nice to know I don't have to pitch it if it loses accuracy. Thanks Sixty-Five!!
@sixtyfiveford
7 жыл бұрын
I guess I'm rough on these, as they always seam to go out after a years use.
@bctruck7 жыл бұрын
Ive had them apart,but never thought about adjusting them. good info to have.
@sixtyfiveford
7 жыл бұрын
Seams they are always a little out.
@MattSeals5 жыл бұрын
You're an extremely valuable internet video; could not make it without ya!
@sixtyfiveford
5 жыл бұрын
Thanks, I'm glad you liked it.
@Engineerboy100 Жыл бұрын
That was very useful! Thank you for posting. I never knew air gauges were adjustable. Pretty slick.
@LLuE887 жыл бұрын
I used to do calibration, the way to do it is set at either mid range of the gauge it self to a known, or at a specific pressure range that will be used the most. a hydraulic dead weight pressure calibrator can be around $3,500.00,. even so the above still applies. your method is fine, only slight correction might be to set the gauges at the pressure used the most. I'm confident that your understanding of mechanical items that you could make one for yourself. It's simply a hydraulic fluid between a known floating dead weight pressurizing a cavity via a fixed diameter piston (1/8" to 1/4"), "no" 'o' rings, just oil fluid, some leakage is acceptable. cost of a hyd. jack pump, pipe fittings, then add known piston with cylinder with disk and known weights, calculations. regards
@sixtyfiveford
7 жыл бұрын
I've debated building a hydraulic dead weight pressure calibrator, but would need it so infrequently it wouldn't be viable. I have watched a few videos on them and looked at them online.
@gregwormald84007 жыл бұрын
Thanks for the info. It worked fine on my 20 year old gauge that was about 4 lb out. It saved my from having to send it from Australia to the US for service.
@sixtyfiveford
7 жыл бұрын
Thanks, I'm glad it was helpful.
@BrucesShop7 жыл бұрын
Thanks Moe. Great video. My brother in law is an instrument tech . He gets to play with the expensive toys. The rest of us do what we can. Great stuff.
@sixtyfiveford
7 жыл бұрын
He would cringe at how I set these then.
@denrayr
7 жыл бұрын
Your method is more elegant than mine. My gauges are usually only off by a few psi, so I just bend the needle to calibrate.
@denrayr
7 жыл бұрын
Your method is more elegant than mine. My gauges are usually only off by a few psi, so I just bend the needle to calibrate.
@cubbeezx7 жыл бұрын
Another great video with some really good information!
@sixtyfiveford
7 жыл бұрын
Thanks.
@jandastroy7 жыл бұрын
Thanks for showing this, I knew they could be calibrated but I never thought it would be so simple. I guess the real trick is to have something that you know is accurate to work off of and you're set.
@sixtyfiveford
7 жыл бұрын
Thanks for watching.
@ashy1423 Жыл бұрын
Thanks again for all your videos, Stay well Ash from Scotland 🏴
@sixtyfiveford
Жыл бұрын
Thanks Ash, I'm glad you like them. -Moe
@corey63937 ай бұрын
This is an excellent explanation of the process. Thanks Moe!
@JDye-youtube Жыл бұрын
A man with one watch knows exactly what time it is. A man with two watches has no ideas what time it is. A man with three watches can be reasonably certain what time it is.
@coyote1020767 жыл бұрын
nice! I never knew they could be adjusted. Sadly I just threw away several over the last 25 years when I found them to be off. Learn something new every day.
@sixtyfiveford
7 жыл бұрын
Thanks.
@vaughngaminghd3 жыл бұрын
Excellent video, full of relevant information and gets directly to the point!
@avsfan28454 жыл бұрын
Thanks bro...mines back to working perfect!Saved me a trip to Canadian tire,and a few bucks $
@sixtyfiveford
4 жыл бұрын
Awesome. I'm glad you liked it.
@matthewmiller60684 жыл бұрын
Thanks - got a fairly nice new gauge to keep in my shop (vs digging the one out of each car or my bike) and it's like 5-7psi low, this is much easier than playing roulette with exchanges. I don't need lab accuracy but I knew there had to be a better way to get within a PSI or so on checking tires.
@sixtyfiveford
4 жыл бұрын
Thanks, I'm glad you liked it.
@lgh11574 жыл бұрын
Exactly what i have been looking for , . . . thank you
@Michaelthchan2 ай бұрын
It is very good instructions, Thanks
@yellownp225417 жыл бұрын
Happy belated Thanksgiving and thank you for an awesome video, you read my mind.
@sixtyfiveford
7 жыл бұрын
Thanks.
@goodisnipr Жыл бұрын
When I was younger, I asked my dad how he knows a gauge is accurate. He said he didn't and in fact, it'd be a good thing to use two gauges. So then when he got a second gauge, and they didn't match each other, then I asked.... "Which one do we trust?" And he said screw it, we'll just avg them, I'm not buying a third gauge. And then he proceeded to grill me for the next hour on multiplication tables.
@royfernatt7932Ай бұрын
Great to know this thank you
@Goomer7 жыл бұрын
Good tip. What I have a problem with is my air hose connections, you did yours with one hand, mine takes 2 hands and a corner to push the connection in. The hose is an after market, I think Goodyear hose, thought it would good, but alas, it blows.
@sixtyfiveford
7 жыл бұрын
I've had troublesome air connections, but for the most part I've had great luck with the Home Depot Brass and Steel ones.
@ehade Жыл бұрын
Thanks for showing how these gauges are adjusted but would love to know where to find an affordable source.
@ronaldhurd66864 жыл бұрын
Thanks for the great tip. Never thought it was that easy
@sixtyfiveford
4 жыл бұрын
Thanks, I'm glad you liked it.
@spoileddogx37 жыл бұрын
Thanks for sharing your knowledge.
@sixtyfiveford
7 жыл бұрын
Thanks for tuning in.
@sail235aeh7 жыл бұрын
Great video ! And to think I used to throw the bad ones away. Thanks again !
@sixtyfiveford
7 жыл бұрын
Thanks.
@orange12v7 жыл бұрын
I know a guy who does gauges & other instruments for a living & said gauges like them are only accurate between it's 10 o'clock & 2 o'clock positions so the 12 o'clock is the best spot to set them
@sixtyfiveford
7 жыл бұрын
I can see that being the case and it seams to coincide with what I've noticed.
@old64goat7 жыл бұрын
Great tip Moe, THANKS!
@sixtyfiveford
7 жыл бұрын
Thanks.
@wyattoneable7 жыл бұрын
That's amazing. Your a master Moe!
@sixtyfiveford
7 жыл бұрын
I can't bring myself to throw anything away.
@EdOfTheNorth7 жыл бұрын
Hi Moe. Always good information. Thanks.
@sixtyfiveford
7 жыл бұрын
Thanks.
@ronalmeida25367 жыл бұрын
Thanks. As usual, I enjoyed the heck outta that video. I feel smarter too.
@sixtyfiveford
7 жыл бұрын
Thanks for tuning in.
@curiosity23147 жыл бұрын
Nice, didn't know of the ability to make the change. I would imagine the more they are loaded all the time in the case of a compressor the less accurate over time they will be?
@sixtyfiveford
7 жыл бұрын
Exactly. I think the metal has to fatigue and stretch over time.
@garymucher95903 жыл бұрын
This is synonymous with a wearing a watch. If you have a watch, you always know what time it is. If you have two watches, you never know what time it is for certain. The more pressure gauges you have, the average is all you can go with. But you have no definite knowledge of the exact pressure. Thumbs Up for your video and info for adjusting bourdon tubes.
@captlarry-3525 Жыл бұрын
most gauges are most accurate at the upper end of the scale and least accurate at the low end. this is why you dont want to measure 30 psi tires with a 300 psi gauge...and why a 100 psi gauge may not be the best either. That said, you can adjust a meter to be accurate in the range you use most say 30-45 psi... and live with however wierd it is on other parts of the scale. Another thing you can do is make a Calibration Chart... which could just be a magic marker note that say plus 9 psi at full scale.
@helidodge7 жыл бұрын
Good to know. Thanks for posting
@sixtyfiveford
7 жыл бұрын
Yeah, thanks for tuning in.
@MatHelm7 жыл бұрын
Not sure what to do with this new knowledge, but I am somehow glad to have it. Speaking of which, what do you know about generator heads? I know you've set the internet straight on sound reduction of the engines (what with all the muffler adding videos to nowhere), but I think a trouble shooting video would be a great thing to add. Beyond your video of adjusting the rpm's/frequency video I mean. In my case, I lost one side of my 240 after a feedback brainfart from the mains because of throwing the main switch (for a second) before unplugging the gen. I first attempted a repair of the rectifier/brush holder, which didn't last, and then replaced it. Which worked yesterday for about 10 minutes use, until the power came back. But later after power went out again, I was back to 120... I had also wired in a proper transfer switch and plug between the two uses yesterday. Which had me checking the new cable and such. Until finally checking at the actual outlets from the gen. But I still need to actually go through it to know that there's a problem. Was pouring rain yesterday, and we go months/years between needing the thing so... But still, I think a video on the subject would be a great service to many...
@sixtyfiveford
7 жыл бұрын
For the most part it's generally the brushes or the AVR (automatic voltage regulator) that is the culprit. That is besides actually having shorted windings which is a death sentence. Shorted windings can be seen by there charred winding wireing. I just repaired a one leg dead generator a few weeks ago. It was a very inexpensive Chinese model and it ended up with the wire disconnected in 3 places. Once broken by the brushes, next a loosened terminal on the circuit breaker, and finally disconnected at a 120v-240v transfer switch.
@MatHelm
7 жыл бұрын
sixtyfiveford No AVR on this Troy Bilt 5550. Just a 4 diode rectifier with a single Varistor mounted onto the brush holder. Just need to pop the cover and check the windings with a ohms meter. The thing that confuses me is that it output the full 240v the first time, after replacing the rectifier/brushs. But I guess that could be a singed winding... Since I post the first comment, I have seen the many different generator design variables. A video on the subject might not be as easy as I originally thought...
@hikerJohn7 ай бұрын
All my gauges agree at 35 PSI but some are way off at 80 PSI and I dont know which ones are good
@chadhoffman11027 жыл бұрын
Cool video, as always.
@sixtyfiveford
7 жыл бұрын
Thanks Chad.
@Zickcermacity Жыл бұрын
I think I'm from the FIFTIES even just by mentioning this, but does there exist any more a "master gauge" at garages or tire dealers any more?
@atlantisre-atlantisenterpr68957 жыл бұрын
learn alot from your video, thank you!
@shawnmrfixitlee64787 жыл бұрын
I do that to , They are made in China most of the time these days and I want true pressure read every time ! great share .. Thumbs up Moe ..
@sixtyfiveford
7 жыл бұрын
Yeah, I have a few USA made ones that I cherish.
@shawnmrfixitlee6478
7 жыл бұрын
Right on !
@atlantisre-atlantisenterpr68957 жыл бұрын
thank you very much for share
@TheShadeTreeFixitMan7 жыл бұрын
Good tips
@sixtyfiveford
7 жыл бұрын
Thanks George.
@ozzstars_cars7 жыл бұрын
Thanks for the info on this Moe. Just a couple of days ago I was doing a compression check on a Corvette engine and was using my 25 year old gauge. I don't suspect any issues wiith it but wondered how accurate it still was? I was getting 165-170 psi per cylinder so I wasn't worried about the results.
@sixtyfiveford
7 жыл бұрын
You never know. Sounds like a healthy engine.
@moclepocle7 жыл бұрын
Great video, thanks
@sixtyfiveford
7 жыл бұрын
Thanks Miguel. -Moe
@ke6bnl7 жыл бұрын
I have never done it that way, I have a special tool that pops off the needle and I just put the need to zero with no pressure or at none pressure while in service.
@sixtyfiveford
7 жыл бұрын
That works. I find some gauges that when accurate at high pressure, still have tension on the zero post(if that makes sense).
@JoshKilen7 жыл бұрын
nice job and great info.
@sixtyfiveford
7 жыл бұрын
Thanks for watching.
@johnpoldo88173 жыл бұрын
Excellent video. Thank you very much. Problem solved
@sixtyfiveford
3 жыл бұрын
Glad it helped
@JoaoMPSilva134 жыл бұрын
You should check how accurate gas station gauges are vs yours, since alot of people rely on them everyday
@sixtyfiveford
4 жыл бұрын
I'm sure they're off a little.
@wxfield7 жыл бұрын
Love the video..thumbs up! What do you think of using a digital pressure gauge as your control? My old Extech gauge says it's accurate to within +/- 1% of a kpa (or 1/7th of a PSI). I guess the digital gauges are also temperature compensated internally, so they are accurate regardless of operating environment.
@sixtyfiveford
7 жыл бұрын
I haven't had great luck with the digital pressure gauges. But I could have just got cheap ones.
@rchopp7 жыл бұрын
I have one just like your favorite one but it's off at least 10 pounds guess I'll have to fix it know,, thanks for the tip..
@sixtyfiveford
7 жыл бұрын
That's exactly what forced me to tear into them.
@san3797 жыл бұрын
I assume mine is right.. a bit more is not tooooo bad.. my tires are all old used tires anyway..
@Albert-rg5qi3 жыл бұрын
I have a gauge that’s coming out 60 for checking my tire pressure. So I should get a new one for sure.
@sixtyfiveford
3 жыл бұрын
Yeah, that's not good.
@seagangstab26374 жыл бұрын
So rad! Thank you:)
@sixtyfiveford
4 жыл бұрын
I'm glad you liked it.
@jhigdem7 жыл бұрын
Thanks, good info.
@sixtyfiveford
7 жыл бұрын
Thanks for tuning in.
@zzzdogutube7 жыл бұрын
thanks
@sixtyfiveford
7 жыл бұрын
Thanks for tuning in.
@walkingweapon7 жыл бұрын
Does temperature significantly affect gauge accuracy? The tube looks susceptible to thermal expansion and contraction.
@sixtyfiveford
7 жыл бұрын
I like the way you think. I was curious about this as well so I researched it a few weeks ago. Supposedly it throws it off .5% for every 20F in temp change. So if I set my gauge to 100psi on a 90F day it will read 1.5% lower on a 30F day(98.5psi)
@mumenrider8622 жыл бұрын
could you match them against the TPMS in your car for accuracy?
@sixtyfiveford
2 жыл бұрын
I don't see why not
@jamesshivers82134 ай бұрын
You da man!!
@sixtyfiveford
4 ай бұрын
Hopefully it was helpful
@wtbm1237 жыл бұрын
Cool
@sixtyfiveford
7 жыл бұрын
Thanks.
@sophietyrrell31314 жыл бұрын
How do I calibrate my gauge from pressure canner?
@sixtyfiveford
4 жыл бұрын
Most pressure canners use a jiggler weight that will automatically regulate your pressure. The gauge is merely there so you know it's building/holding pressure.
@AndysDogHouse5 жыл бұрын
Is a water pressure gauge the same as an air pressure gauge??? Great video.
@sixtyfiveford
5 жыл бұрын
All the ones I've opened up are the same.
@AndysDogHouse
5 жыл бұрын
@@sixtyfiveford Thanks. I thought that there might be a seal for the water pump gauge so water can't get into the dial. I didn't want to ruin the air gauge with water.
@selador117 жыл бұрын
Ok, that gauge/filler that you said was a good one. Have you had any problem with the clip on chuck at the end? I have bought the kind that look like a regular fill chuck, but have an arm off to the side, that allows you to clip it to the tire stem, but that never works for more than 5 or 6 fillups. And even then, you have to hold it just right, or it just flips right off... I'm getting too old for this stuff. I can't just stay bent over for 5 minutes, while the truck tires fill up...
@sixtyfiveford
7 жыл бұрын
It won't hold itself onto the tire very well. I have to use one hand for the trigger and the other holds the clip on the valve.
@selador11
7 жыл бұрын
Thank you. That is exactly the problem I am having with the air chucks I have now. Stooping and holding that, on the valve stem for the amount of time it takes to fill an RV or truck tire, is painful for the back, hips, and knees. I think I'm going to just try to adapt one from a cheapo bike pump, to my home compressor. At least when you flip the lever on those they actually STAY on the valve stem. :)
@sixtyfiveford
7 жыл бұрын
I know what you mean. When I change tires and am airing them up for the first time to seat the beam I use this tire chuck amzn.to/2hIza0H . It holds and allows me to step back out of the way until is done seating. I put a 1/8" npt pipe nipple on it and an air fitting. This style grips and holds on by itself.
@selador11
7 жыл бұрын
That's exactly the chuck I am having problems with. You have to get it on there JUUUUST RIGHT. And if it moves the slightest bit when you are letting go of it, it pops right off the stem. Meaning you have to go back and put it back on there just exactly right again. And hope it doesn't move at all when you let go of it again... I'm looking at the cheapo pump style because when you flip the lever, you have a positive grip, and seal on the valve stem. www.amazon.com/Sunlite-Universal-Thumb-Lock-Hose/dp/B00629RMZE/ref=pd_sim_263_3?_encoding=UTF8&pd_rd_i=B00629RMZE&pd_rd_r=1FJG8EBQC8PA5WA58XQG&pd_rd_w=2vFNw&pd_rd_wg=Bevz1&psc=1&refRID=1FJG8EBQC8PA5WA58XQG Also considering one of these, because it at least surrounds the valve stem threads, instead of getting a grip only on the lip of them: www.amazon.com/Pack-EPAuto-Straight-Lock-Inflator/dp/B017S44ARO/ref=sr_1_7?s=automotive&ie=UTF8&qid=1481793819&sr=1-7&keywords=air+chuck
@selador11
7 жыл бұрын
By the way, I have gone through at least a dozen of those. Most seem to work well, right at first. After a while, you have to be careful to get it slid onto the valve as far as you can. That works for a while. Then, after a while, it just stops working at all.
@zx8401ztv7 жыл бұрын
Ive never messed with the one i have, its one that came attached to a double cylinder foot pump, so its cheap. I would undo the two scale fixing screws and see if i could get enough play to rotate it a tiny bit lol, im a chicken, i dont want to slip and damage the bourdon tube LOL.
@sixtyfiveford
7 жыл бұрын
They're pretty reliable on stationary items.
@dongking62455 жыл бұрын
Use a sealed tank itll give you better accuracy
@ArcanePath3604 жыл бұрын
I would never know my gauge was out, but my TPMS tells me it's 37 psi and my foot pump says 40. I don't know which one to believe.
@sixtyfiveford
4 жыл бұрын
TPMS is generally very accurate to within a single psi.
@KSIXRIDER6 жыл бұрын
Thank you for that DIY.
@sixtyfiveford
6 жыл бұрын
Thanks, I'm glad you liked it.
@not2fast4u2c7 жыл бұрын
It's a shame how many I have thrown away over the years and that's all I had to do to fix them
@sixtyfiveford
7 жыл бұрын
Thanks for watching.
@jfloyd63347 жыл бұрын
thanks for the vid. got the gas tank in the 65 f100 yay. but what kind of tractor is that you have small one with the attachments ? thanks!
@sixtyfiveford
7 жыл бұрын
I have a 1952 Ferguson TO30 that I run a wood chipper and log splitter off of in some of my videos.
@jfloyd6334
7 жыл бұрын
what about the small lawn and garden one you have with a front end loader?
@sixtyfiveford
7 жыл бұрын
That is my 1984 MTD 998 Garden Tractor. It has a front end loader and rear 3 point hitch.
@anachronist7 жыл бұрын
What do you do if the gauge isn't just off by a constant amount, but off by a percentage, like it's always showing 20% higher than it should?
@sixtyfiveford
7 жыл бұрын
Calibrating it at a determined pressure should make it accurate at any number.
@anachronist
7 жыл бұрын
Um, no. The calibration in this video is about moving the needle a constant amount. That isn't the same thing as changing the stiffness of the circular hollow part that expands to move the needle. I have a gauge that reads 0 psi perfectly, but reads 20% too high at any pressure. When the pressure is 20 psi, it reads 24 (4 psi difference). When the pressure is 100 psi, it reads 120 (20 psi difference). In all cases the percent error is the same, 20%. This means that the internal copper bellows (or whatever it's called) is flexing too much and moving the needle too far. Simply offsetting the needle position won't help.
@sixtyfiveford
7 жыл бұрын
The gauges will be off by a percentage, that's what I fix in the video. I'm not changing the needle position by bending the tab I'm changing the force that is applied exponentially. This changes the reading to be accurate. "Changing the needle position" would be simply pulling the needle off and putting it back on and would only be done is the reading was off by, say 10psi across the board. I don't do that in the video.
@anachronist
7 жыл бұрын
Pinching or expanding that little loop only offsets the needle by a constant amount, it doesn't change the stiffness of the bourdon tube. It doesn't change any force; there's no force on the needle, it simply follows a gear driven by the bourdon tube linkage. The only force in the gauge is the bourdon tube resisting the pressure, and that little loop won't change that resistance. It just allows you to move the needle without having to pull it off the shaft and reposition it. In the video, if you had snipped off the needle stop at the zero position, you'd find that yes, you've corrected the reading at a high pressure but also changed the position of "zero" for the gauge. My understanding of that loop is that it's intended for calibrating the zero setting. Of course, if there's a narrow range of pressure you're interested in measuring, then it makes sense to adjust that loop so the gauge reads correctly in that range of pressure, but it won't fix the percentage error of the bourdon tube.
@michael931
2 жыл бұрын
@Anachronist no. Adjusting the loop changes the gain as he said. Offset is adjusted by moving the position of the needle on the shaft.
@kellyokamoto16047 жыл бұрын
What's your take on digital gauges? Can you calibrate them?
@sixtyfiveford
7 жыл бұрын
I've bought a basic cheap digital one years ago and it was horrible. I'm sure there are nice ones though. I tore it apart and saw no way to adjust it.
@juliusvalentinas7 жыл бұрын
Best video ;)
@sixtyfiveford
7 жыл бұрын
Thanks.
@jameskoralewski2965 жыл бұрын
Is that screw on the back of the gauge a zero adjust or a maximum pressure adjust? I question your gauge adjustment procedures.
@pretzeljohn7441
5 жыл бұрын
The screws on the back just hold the gauge assembly into the housing. Most gauges don't come with any adjustment options, so expanding/contracting the metal at the bend is the best way to adjust it!
@TBoy2055 жыл бұрын
next time could you please do a close up when showing how the gauge works
@Helpfulsuggestions9 ай бұрын
Now show us how to calibrate a digital pressure gauge. Lol
@joachimjohan12157 жыл бұрын
NAIS!
@sixtyfiveford
7 жыл бұрын
Thanks.
@daveschuetrum5763 жыл бұрын
You keep costing me money...
@jameskoralewski2965 жыл бұрын
How can you use a slew of inaccurate gauges to combine and use as your reference gauge? Don't be so cheap and buy a good analog gauge like the drag racers use.
@gregorypeel51367 жыл бұрын
Is there anything this guy doesn't know how to fix!?
@sixtyfiveford
7 жыл бұрын
Only one way to find out. I'll try to fix everything. Thanks Man.
@bmfilmnut5 жыл бұрын
Your method is very flawed. You assume that gauges that read the same must be accurate. You also claim that you know one of your gauges is accurate. How do you know that? Did you test it with a super-expensive industry standard calibration tester like you mentioned? I doubt it. And, even if you did, how long ago was that? I'm not saying your method has no value. In fact, it has excellent value and is useful. But you can't KNOW that any of your gauges are accurate unless you tested it against a standard recently. Here's an example of the point I'm making: Not long ago, I tested 8 gauges that I have including a couple stick gauges, three mechanical dial gauges and a couple digital guages. Most of them read about the same with the exception of one dial gauge that read 5 pounds over what most of the others read. Being a retired engineer, I actually had access to a machine to test the gauges or, rather, I know someone who has access to such a machine. It turns out that almost all of the guages were off by a couple pounds. Suprisingly, the cheap stick gauges were the most accurate with the exception of one that was off a few pounds. The moral of the story is that comparing gauge readings is fine and useful but you cannot claim that they are accurate just because they read the same. The best you can say is you THINK they are probably accurate because they are reading the same.
@pretzeljohn7441
5 жыл бұрын
You have a great point! However, when you compare multiple gauges, it becomes less and less likely that all of them are inaccurate, and more and more likely that they are accurate. They do the same thing with science experiments... take the average of several measurements to get better certainty of the result
@timothywhieldon1971Ай бұрын
worthless video. You are measuring against an unknown.
Пікірлер: 178
Good to see this vid. Working in equipment calibration one tip I do have is to have one dial type guage sent for calibration but no need to pay for adjustment, just ask for a result sheet. Then put this unit aside as a reference unit to compare others against once a year or so.
@sixtyfiveford
7 жыл бұрын
Great tip.
HEY! 65FORD IT WORKED! I had a brand new gauge about 8 lb. off and good for nothin'. Your video did the trick. Perfect. I've said this before on your channel... I wish we were neighbors. I've learned so many things from you. Very helpful. Thanks once again.
@sixtyfiveford
5 жыл бұрын
Thanks. That's awesome.
I used this procedure to calibrate a Harbor Freight filler gauge to a Winters PFQ series industrial gauge spec'd to +/- 1.5%. It is very easy to do and highly recommended. The actual spreading or squeezing of the 'loop' is minimal so you have to be gentle with your tools.
@sixtyfiveford
5 жыл бұрын
Awesome.
So i went and bought a classic vintage tire gauge and was the only one available and needed adjustment so i got a good deal 4 years later still this video helped Thx man have a wonderful day
@sixtyfiveford
3 жыл бұрын
Great job!
i recently bought a Milton digital and compared it to my vintage US made Milton analog and the digital is spot on.
great 8 minutes I ever spent, we have a ton of gauges throughout the farm on all our poultry equipment and also in my shop...so now when I have a lazy snowy winter day I will head out to the turkey barns and the shop and spend a day checking all the gauges...it will also give me something to film...why didnt I think of this.....bet you and the Mrs were sitting around a cozy fire saying, "babe I need a KZread video topic" and she said: "while I am thinking of it... my tires on my car seem a little low"....You said "Thanks"
@sixtyfiveford
7 жыл бұрын
Hey Thanks.
Thanks for this great video. It is refreshing to hear the word "bourdon" gauge again outside of school. Interesting to note that the graduations of a particular gauge play an important role too. The less the graduations of the gauge, the more inaccuracy likely there is compared from one with more (200 psi vs 160psi).
@sixtyfiveford
5 жыл бұрын
Thanks, I'm glad you liked it.
This video inspired me to calibrate my tire gauge/filler similar to what he is using. I calibrated my gauge to read the same value as my car's ('98 Corvette) TPMS reading. I have since ordered but not yet received a commercial grade 0-60psi oil filled mechanical gauge (Winters p/n PFQ803R1) that is spec'd to +/- 1.5% accuracy. I will use this new gauge as a reference and compare all my gauges to it. I don't plan on calibrating my five air compressor regulator gauges as tire inflation is more important to me than air tools. I have not been able to verify what the accuracy of the TPMS sensors but there should be an ASME standard for such devices, my guess is +/- 2-3% for automotive applications.
@captlarry-3525
Жыл бұрын
we get 10-20% speedo errors...why think the tire dongles are better ? I like your winters gauge idea best.
@Tsiikki
8 ай бұрын
@@captlarry-3525speedo errors are mandatory. Car cannot show lower speed than you're going. They also need to consider that car can have different size wheels from the factory or the user can also install bigger wheels.. In some cars you can code the installed size or so. Many times car do know the exact speed or very close, but there's algorithm to add some. For TPMS it's safety feature and I haven't looked exact spec but I believe it's close. Probably how the TPMS gets it's info (passive, active, etc) there's some difference in accuracy.
Awesome...I've got a similar dial-type tire pressure gauge. It's nice to know I don't have to pitch it if it loses accuracy. Thanks Sixty-Five!!
@sixtyfiveford
7 жыл бұрын
I guess I'm rough on these, as they always seam to go out after a years use.
Ive had them apart,but never thought about adjusting them. good info to have.
@sixtyfiveford
7 жыл бұрын
Seams they are always a little out.
You're an extremely valuable internet video; could not make it without ya!
@sixtyfiveford
5 жыл бұрын
Thanks, I'm glad you liked it.
That was very useful! Thank you for posting. I never knew air gauges were adjustable. Pretty slick.
I used to do calibration, the way to do it is set at either mid range of the gauge it self to a known, or at a specific pressure range that will be used the most. a hydraulic dead weight pressure calibrator can be around $3,500.00,. even so the above still applies. your method is fine, only slight correction might be to set the gauges at the pressure used the most. I'm confident that your understanding of mechanical items that you could make one for yourself. It's simply a hydraulic fluid between a known floating dead weight pressurizing a cavity via a fixed diameter piston (1/8" to 1/4"), "no" 'o' rings, just oil fluid, some leakage is acceptable. cost of a hyd. jack pump, pipe fittings, then add known piston with cylinder with disk and known weights, calculations. regards
@sixtyfiveford
7 жыл бұрын
I've debated building a hydraulic dead weight pressure calibrator, but would need it so infrequently it wouldn't be viable. I have watched a few videos on them and looked at them online.
Thanks for the info. It worked fine on my 20 year old gauge that was about 4 lb out. It saved my from having to send it from Australia to the US for service.
@sixtyfiveford
7 жыл бұрын
Thanks, I'm glad it was helpful.
Thanks Moe. Great video. My brother in law is an instrument tech . He gets to play with the expensive toys. The rest of us do what we can. Great stuff.
@sixtyfiveford
7 жыл бұрын
He would cringe at how I set these then.
@denrayr
7 жыл бұрын
Your method is more elegant than mine. My gauges are usually only off by a few psi, so I just bend the needle to calibrate.
@denrayr
7 жыл бұрын
Your method is more elegant than mine. My gauges are usually only off by a few psi, so I just bend the needle to calibrate.
Another great video with some really good information!
@sixtyfiveford
7 жыл бұрын
Thanks.
Thanks for showing this, I knew they could be calibrated but I never thought it would be so simple. I guess the real trick is to have something that you know is accurate to work off of and you're set.
@sixtyfiveford
7 жыл бұрын
Thanks for watching.
Thanks again for all your videos, Stay well Ash from Scotland 🏴
@sixtyfiveford
Жыл бұрын
Thanks Ash, I'm glad you like them. -Moe
This is an excellent explanation of the process. Thanks Moe!
A man with one watch knows exactly what time it is. A man with two watches has no ideas what time it is. A man with three watches can be reasonably certain what time it is.
nice! I never knew they could be adjusted. Sadly I just threw away several over the last 25 years when I found them to be off. Learn something new every day.
@sixtyfiveford
7 жыл бұрын
Thanks.
Excellent video, full of relevant information and gets directly to the point!
Thanks bro...mines back to working perfect!Saved me a trip to Canadian tire,and a few bucks $
@sixtyfiveford
4 жыл бұрын
Awesome. I'm glad you liked it.
Thanks - got a fairly nice new gauge to keep in my shop (vs digging the one out of each car or my bike) and it's like 5-7psi low, this is much easier than playing roulette with exchanges. I don't need lab accuracy but I knew there had to be a better way to get within a PSI or so on checking tires.
@sixtyfiveford
4 жыл бұрын
Thanks, I'm glad you liked it.
Exactly what i have been looking for , . . . thank you
It is very good instructions, Thanks
Happy belated Thanksgiving and thank you for an awesome video, you read my mind.
@sixtyfiveford
7 жыл бұрын
Thanks.
When I was younger, I asked my dad how he knows a gauge is accurate. He said he didn't and in fact, it'd be a good thing to use two gauges. So then when he got a second gauge, and they didn't match each other, then I asked.... "Which one do we trust?" And he said screw it, we'll just avg them, I'm not buying a third gauge. And then he proceeded to grill me for the next hour on multiplication tables.
Great to know this thank you
Good tip. What I have a problem with is my air hose connections, you did yours with one hand, mine takes 2 hands and a corner to push the connection in. The hose is an after market, I think Goodyear hose, thought it would good, but alas, it blows.
@sixtyfiveford
7 жыл бұрын
I've had troublesome air connections, but for the most part I've had great luck with the Home Depot Brass and Steel ones.
Thanks for showing how these gauges are adjusted but would love to know where to find an affordable source.
Thanks for the great tip. Never thought it was that easy
@sixtyfiveford
4 жыл бұрын
Thanks, I'm glad you liked it.
Thanks for sharing your knowledge.
@sixtyfiveford
7 жыл бұрын
Thanks for tuning in.
Great video ! And to think I used to throw the bad ones away. Thanks again !
@sixtyfiveford
7 жыл бұрын
Thanks.
I know a guy who does gauges & other instruments for a living & said gauges like them are only accurate between it's 10 o'clock & 2 o'clock positions so the 12 o'clock is the best spot to set them
@sixtyfiveford
7 жыл бұрын
I can see that being the case and it seams to coincide with what I've noticed.
Great tip Moe, THANKS!
@sixtyfiveford
7 жыл бұрын
Thanks.
That's amazing. Your a master Moe!
@sixtyfiveford
7 жыл бұрын
I can't bring myself to throw anything away.
Hi Moe. Always good information. Thanks.
@sixtyfiveford
7 жыл бұрын
Thanks.
Thanks. As usual, I enjoyed the heck outta that video. I feel smarter too.
@sixtyfiveford
7 жыл бұрын
Thanks for tuning in.
Nice, didn't know of the ability to make the change. I would imagine the more they are loaded all the time in the case of a compressor the less accurate over time they will be?
@sixtyfiveford
7 жыл бұрын
Exactly. I think the metal has to fatigue and stretch over time.
This is synonymous with a wearing a watch. If you have a watch, you always know what time it is. If you have two watches, you never know what time it is for certain. The more pressure gauges you have, the average is all you can go with. But you have no definite knowledge of the exact pressure. Thumbs Up for your video and info for adjusting bourdon tubes.
most gauges are most accurate at the upper end of the scale and least accurate at the low end. this is why you dont want to measure 30 psi tires with a 300 psi gauge...and why a 100 psi gauge may not be the best either. That said, you can adjust a meter to be accurate in the range you use most say 30-45 psi... and live with however wierd it is on other parts of the scale. Another thing you can do is make a Calibration Chart... which could just be a magic marker note that say plus 9 psi at full scale.
Good to know. Thanks for posting
@sixtyfiveford
7 жыл бұрын
Yeah, thanks for tuning in.
Not sure what to do with this new knowledge, but I am somehow glad to have it. Speaking of which, what do you know about generator heads? I know you've set the internet straight on sound reduction of the engines (what with all the muffler adding videos to nowhere), but I think a trouble shooting video would be a great thing to add. Beyond your video of adjusting the rpm's/frequency video I mean. In my case, I lost one side of my 240 after a feedback brainfart from the mains because of throwing the main switch (for a second) before unplugging the gen. I first attempted a repair of the rectifier/brush holder, which didn't last, and then replaced it. Which worked yesterday for about 10 minutes use, until the power came back. But later after power went out again, I was back to 120... I had also wired in a proper transfer switch and plug between the two uses yesterday. Which had me checking the new cable and such. Until finally checking at the actual outlets from the gen. But I still need to actually go through it to know that there's a problem. Was pouring rain yesterday, and we go months/years between needing the thing so... But still, I think a video on the subject would be a great service to many...
@sixtyfiveford
7 жыл бұрын
For the most part it's generally the brushes or the AVR (automatic voltage regulator) that is the culprit. That is besides actually having shorted windings which is a death sentence. Shorted windings can be seen by there charred winding wireing. I just repaired a one leg dead generator a few weeks ago. It was a very inexpensive Chinese model and it ended up with the wire disconnected in 3 places. Once broken by the brushes, next a loosened terminal on the circuit breaker, and finally disconnected at a 120v-240v transfer switch.
@MatHelm
7 жыл бұрын
sixtyfiveford No AVR on this Troy Bilt 5550. Just a 4 diode rectifier with a single Varistor mounted onto the brush holder. Just need to pop the cover and check the windings with a ohms meter. The thing that confuses me is that it output the full 240v the first time, after replacing the rectifier/brushs. But I guess that could be a singed winding... Since I post the first comment, I have seen the many different generator design variables. A video on the subject might not be as easy as I originally thought...
All my gauges agree at 35 PSI but some are way off at 80 PSI and I dont know which ones are good
Cool video, as always.
@sixtyfiveford
7 жыл бұрын
Thanks Chad.
I think I'm from the FIFTIES even just by mentioning this, but does there exist any more a "master gauge" at garages or tire dealers any more?
learn alot from your video, thank you!
I do that to , They are made in China most of the time these days and I want true pressure read every time ! great share .. Thumbs up Moe ..
@sixtyfiveford
7 жыл бұрын
Yeah, I have a few USA made ones that I cherish.
@shawnmrfixitlee6478
7 жыл бұрын
Right on !
thank you very much for share
Good tips
@sixtyfiveford
7 жыл бұрын
Thanks George.
Thanks for the info on this Moe. Just a couple of days ago I was doing a compression check on a Corvette engine and was using my 25 year old gauge. I don't suspect any issues wiith it but wondered how accurate it still was? I was getting 165-170 psi per cylinder so I wasn't worried about the results.
@sixtyfiveford
7 жыл бұрын
You never know. Sounds like a healthy engine.
Great video, thanks
@sixtyfiveford
7 жыл бұрын
Thanks Miguel. -Moe
I have never done it that way, I have a special tool that pops off the needle and I just put the need to zero with no pressure or at none pressure while in service.
@sixtyfiveford
7 жыл бұрын
That works. I find some gauges that when accurate at high pressure, still have tension on the zero post(if that makes sense).
nice job and great info.
@sixtyfiveford
7 жыл бұрын
Thanks for watching.
Excellent video. Thank you very much. Problem solved
@sixtyfiveford
3 жыл бұрын
Glad it helped
You should check how accurate gas station gauges are vs yours, since alot of people rely on them everyday
@sixtyfiveford
4 жыл бұрын
I'm sure they're off a little.
Love the video..thumbs up! What do you think of using a digital pressure gauge as your control? My old Extech gauge says it's accurate to within +/- 1% of a kpa (or 1/7th of a PSI). I guess the digital gauges are also temperature compensated internally, so they are accurate regardless of operating environment.
@sixtyfiveford
7 жыл бұрын
I haven't had great luck with the digital pressure gauges. But I could have just got cheap ones.
I have one just like your favorite one but it's off at least 10 pounds guess I'll have to fix it know,, thanks for the tip..
@sixtyfiveford
7 жыл бұрын
That's exactly what forced me to tear into them.
I assume mine is right.. a bit more is not tooooo bad.. my tires are all old used tires anyway..
I have a gauge that’s coming out 60 for checking my tire pressure. So I should get a new one for sure.
@sixtyfiveford
3 жыл бұрын
Yeah, that's not good.
So rad! Thank you:)
@sixtyfiveford
4 жыл бұрын
I'm glad you liked it.
Thanks, good info.
@sixtyfiveford
7 жыл бұрын
Thanks for tuning in.
thanks
@sixtyfiveford
7 жыл бұрын
Thanks for tuning in.
Does temperature significantly affect gauge accuracy? The tube looks susceptible to thermal expansion and contraction.
@sixtyfiveford
7 жыл бұрын
I like the way you think. I was curious about this as well so I researched it a few weeks ago. Supposedly it throws it off .5% for every 20F in temp change. So if I set my gauge to 100psi on a 90F day it will read 1.5% lower on a 30F day(98.5psi)
could you match them against the TPMS in your car for accuracy?
@sixtyfiveford
2 жыл бұрын
I don't see why not
You da man!!
@sixtyfiveford
4 ай бұрын
Hopefully it was helpful
Cool
@sixtyfiveford
7 жыл бұрын
Thanks.
How do I calibrate my gauge from pressure canner?
@sixtyfiveford
4 жыл бұрын
Most pressure canners use a jiggler weight that will automatically regulate your pressure. The gauge is merely there so you know it's building/holding pressure.
Is a water pressure gauge the same as an air pressure gauge??? Great video.
@sixtyfiveford
5 жыл бұрын
All the ones I've opened up are the same.
@AndysDogHouse
5 жыл бұрын
@@sixtyfiveford Thanks. I thought that there might be a seal for the water pump gauge so water can't get into the dial. I didn't want to ruin the air gauge with water.
Ok, that gauge/filler that you said was a good one. Have you had any problem with the clip on chuck at the end? I have bought the kind that look like a regular fill chuck, but have an arm off to the side, that allows you to clip it to the tire stem, but that never works for more than 5 or 6 fillups. And even then, you have to hold it just right, or it just flips right off... I'm getting too old for this stuff. I can't just stay bent over for 5 minutes, while the truck tires fill up...
@sixtyfiveford
7 жыл бұрын
It won't hold itself onto the tire very well. I have to use one hand for the trigger and the other holds the clip on the valve.
@selador11
7 жыл бұрын
Thank you. That is exactly the problem I am having with the air chucks I have now. Stooping and holding that, on the valve stem for the amount of time it takes to fill an RV or truck tire, is painful for the back, hips, and knees. I think I'm going to just try to adapt one from a cheapo bike pump, to my home compressor. At least when you flip the lever on those they actually STAY on the valve stem. :)
@sixtyfiveford
7 жыл бұрын
I know what you mean. When I change tires and am airing them up for the first time to seat the beam I use this tire chuck amzn.to/2hIza0H . It holds and allows me to step back out of the way until is done seating. I put a 1/8" npt pipe nipple on it and an air fitting. This style grips and holds on by itself.
@selador11
7 жыл бұрын
That's exactly the chuck I am having problems with. You have to get it on there JUUUUST RIGHT. And if it moves the slightest bit when you are letting go of it, it pops right off the stem. Meaning you have to go back and put it back on there just exactly right again. And hope it doesn't move at all when you let go of it again... I'm looking at the cheapo pump style because when you flip the lever, you have a positive grip, and seal on the valve stem. www.amazon.com/Sunlite-Universal-Thumb-Lock-Hose/dp/B00629RMZE/ref=pd_sim_263_3?_encoding=UTF8&pd_rd_i=B00629RMZE&pd_rd_r=1FJG8EBQC8PA5WA58XQG&pd_rd_w=2vFNw&pd_rd_wg=Bevz1&psc=1&refRID=1FJG8EBQC8PA5WA58XQG Also considering one of these, because it at least surrounds the valve stem threads, instead of getting a grip only on the lip of them: www.amazon.com/Pack-EPAuto-Straight-Lock-Inflator/dp/B017S44ARO/ref=sr_1_7?s=automotive&ie=UTF8&qid=1481793819&sr=1-7&keywords=air+chuck
@selador11
7 жыл бұрын
By the way, I have gone through at least a dozen of those. Most seem to work well, right at first. After a while, you have to be careful to get it slid onto the valve as far as you can. That works for a while. Then, after a while, it just stops working at all.
Ive never messed with the one i have, its one that came attached to a double cylinder foot pump, so its cheap. I would undo the two scale fixing screws and see if i could get enough play to rotate it a tiny bit lol, im a chicken, i dont want to slip and damage the bourdon tube LOL.
@sixtyfiveford
7 жыл бұрын
They're pretty reliable on stationary items.
Use a sealed tank itll give you better accuracy
I would never know my gauge was out, but my TPMS tells me it's 37 psi and my foot pump says 40. I don't know which one to believe.
@sixtyfiveford
4 жыл бұрын
TPMS is generally very accurate to within a single psi.
Thank you for that DIY.
@sixtyfiveford
6 жыл бұрын
Thanks, I'm glad you liked it.
It's a shame how many I have thrown away over the years and that's all I had to do to fix them
@sixtyfiveford
7 жыл бұрын
Thanks for watching.
thanks for the vid. got the gas tank in the 65 f100 yay. but what kind of tractor is that you have small one with the attachments ? thanks!
@sixtyfiveford
7 жыл бұрын
I have a 1952 Ferguson TO30 that I run a wood chipper and log splitter off of in some of my videos.
@jfloyd6334
7 жыл бұрын
what about the small lawn and garden one you have with a front end loader?
@sixtyfiveford
7 жыл бұрын
That is my 1984 MTD 998 Garden Tractor. It has a front end loader and rear 3 point hitch.
What do you do if the gauge isn't just off by a constant amount, but off by a percentage, like it's always showing 20% higher than it should?
@sixtyfiveford
7 жыл бұрын
Calibrating it at a determined pressure should make it accurate at any number.
@anachronist
7 жыл бұрын
Um, no. The calibration in this video is about moving the needle a constant amount. That isn't the same thing as changing the stiffness of the circular hollow part that expands to move the needle. I have a gauge that reads 0 psi perfectly, but reads 20% too high at any pressure. When the pressure is 20 psi, it reads 24 (4 psi difference). When the pressure is 100 psi, it reads 120 (20 psi difference). In all cases the percent error is the same, 20%. This means that the internal copper bellows (or whatever it's called) is flexing too much and moving the needle too far. Simply offsetting the needle position won't help.
@sixtyfiveford
7 жыл бұрын
The gauges will be off by a percentage, that's what I fix in the video. I'm not changing the needle position by bending the tab I'm changing the force that is applied exponentially. This changes the reading to be accurate. "Changing the needle position" would be simply pulling the needle off and putting it back on and would only be done is the reading was off by, say 10psi across the board. I don't do that in the video.
@anachronist
7 жыл бұрын
Pinching or expanding that little loop only offsets the needle by a constant amount, it doesn't change the stiffness of the bourdon tube. It doesn't change any force; there's no force on the needle, it simply follows a gear driven by the bourdon tube linkage. The only force in the gauge is the bourdon tube resisting the pressure, and that little loop won't change that resistance. It just allows you to move the needle without having to pull it off the shaft and reposition it. In the video, if you had snipped off the needle stop at the zero position, you'd find that yes, you've corrected the reading at a high pressure but also changed the position of "zero" for the gauge. My understanding of that loop is that it's intended for calibrating the zero setting. Of course, if there's a narrow range of pressure you're interested in measuring, then it makes sense to adjust that loop so the gauge reads correctly in that range of pressure, but it won't fix the percentage error of the bourdon tube.
@michael931
2 жыл бұрын
@Anachronist no. Adjusting the loop changes the gain as he said. Offset is adjusted by moving the position of the needle on the shaft.
What's your take on digital gauges? Can you calibrate them?
@sixtyfiveford
7 жыл бұрын
I've bought a basic cheap digital one years ago and it was horrible. I'm sure there are nice ones though. I tore it apart and saw no way to adjust it.
Best video ;)
@sixtyfiveford
7 жыл бұрын
Thanks.
Is that screw on the back of the gauge a zero adjust or a maximum pressure adjust? I question your gauge adjustment procedures.
@pretzeljohn7441
5 жыл бұрын
The screws on the back just hold the gauge assembly into the housing. Most gauges don't come with any adjustment options, so expanding/contracting the metal at the bend is the best way to adjust it!
next time could you please do a close up when showing how the gauge works
Now show us how to calibrate a digital pressure gauge. Lol
NAIS!
@sixtyfiveford
7 жыл бұрын
Thanks.
You keep costing me money...
How can you use a slew of inaccurate gauges to combine and use as your reference gauge? Don't be so cheap and buy a good analog gauge like the drag racers use.
Is there anything this guy doesn't know how to fix!?
@sixtyfiveford
7 жыл бұрын
Only one way to find out. I'll try to fix everything. Thanks Man.
Your method is very flawed. You assume that gauges that read the same must be accurate. You also claim that you know one of your gauges is accurate. How do you know that? Did you test it with a super-expensive industry standard calibration tester like you mentioned? I doubt it. And, even if you did, how long ago was that? I'm not saying your method has no value. In fact, it has excellent value and is useful. But you can't KNOW that any of your gauges are accurate unless you tested it against a standard recently. Here's an example of the point I'm making: Not long ago, I tested 8 gauges that I have including a couple stick gauges, three mechanical dial gauges and a couple digital guages. Most of them read about the same with the exception of one dial gauge that read 5 pounds over what most of the others read. Being a retired engineer, I actually had access to a machine to test the gauges or, rather, I know someone who has access to such a machine. It turns out that almost all of the guages were off by a couple pounds. Suprisingly, the cheap stick gauges were the most accurate with the exception of one that was off a few pounds. The moral of the story is that comparing gauge readings is fine and useful but you cannot claim that they are accurate just because they read the same. The best you can say is you THINK they are probably accurate because they are reading the same.
@pretzeljohn7441
5 жыл бұрын
You have a great point! However, when you compare multiple gauges, it becomes less and less likely that all of them are inaccurate, and more and more likely that they are accurate. They do the same thing with science experiments... take the average of several measurements to get better certainty of the result
worthless video. You are measuring against an unknown.
thanks
@sixtyfiveford
7 жыл бұрын
Thanks for tuning in.