The absolute best prop tutorial ever. I kind of understood prop's, but its crystal clear now. Wow Stu, you were on top of your game back in the day, lol.

A friend was having trouble with there bass boat not getting up on plane. They took it to several different shops and no one could fix the problem. Finely someone mess with the prop vents and that was the fix. I recently told Frank about your youtube channel and how you helped me with a 2 stroke problem I was having a few years back. And you were the only one that knew what you were talking about. And how you emailed me back and forth and fixed my problem .I told Frank to check out all your videos and there may be one on his boat problem even if you solved it. Keep the videos coming I've watched them all. Thank you for all your boat smarts with we could have a few beers some day if you ever come to northern California please be my gest . Your mate John>-W->

This is THE BEST channel for any marine knowledge I need, thank you for your time!

Great video. I'm an old Marine Engineer. I actually learned some things I didn't know. Thank you.

@DangarMarine

3 жыл бұрын

Glad you enjoyed it

Thank You Sir! You answered questions I didn't even know I had.

Every day I find a new post that answers my questions. Thanks for all the effort.

@DangarMarine

6 жыл бұрын

You're welcome. :)

This is the best presentation I have seen on cavitation and ventilation--words we here a lot but are often a little fuzzy on. Thank you.

All your videos are awesome, real life, no BS! Even now that I own a jetski, I still love your content!

Great video! Thanks for all the information and keeping it simple!

I know this video is already near 3 years old, but i had to pop in to thank you so much for making this video. I really got a great/almost professional sense of props and how they work from this video. I can now choose my prop for my new to me Yamaha f60 with intelligence and understanding. I appreciate you!. Chris from upstate NY.

@DangarMarine

3 жыл бұрын

You're very welcome!

Brilliant explanation. Thanks for taking the time to make and post this video Stu.

Well made video!!! Pure explantion with details but easy details to remember...i could listen to this guy talk all day and learn!!!

Wow thanks for that info! I finally understand props a lot better. I recommend your channel a lot!

excellent explanation, simple, complete, like your style and subscribed, ty for all the information, in theory i know most things you say but since i'm new in boating it really help to see how someone with practical experience approach everything

Great video as usual. And yes, a very clear explanation. We all now understand propellers.

@japyoo2248

Жыл бұрын

Except for that 1 guy, we all know him

I took my boat out today it my first boat I have owned just want to say thank you I used a lot of tips i got from watching your videos. Thanks mate keep them coming

@DangarMarine

6 жыл бұрын

Nice one Samo, glad you hear you are getting out on the water now. May you have many years of safe fun in your new boat! :)

Finally i understand how the props work, thank you. Awesome video

@DangarMarine

6 жыл бұрын

Thanks Brian!

Thanks Stew I finally have a clue on props after being a boat owner for 15 years!!!Super informative!!

@DangarMarine

6 жыл бұрын

Thanks Mike, glad you liked the vid.

I have to say that your videos and info is just so great and always extremely informative .👍👍👍👍keep them coming

@DangarMarine

6 жыл бұрын

Thanks mate!

I was looking forward to this topic. Great video as always!!!

@DangarMarine

6 жыл бұрын

Thanks Sean.

I have learned so much from your videos mate, I can not thank you enough! Great channel!

thanx stu lots of good info. as you get ready for a great summer we are all about getting that last one in before the winterization starts.

@DangarMarine

6 жыл бұрын

Thanks mate. Enjoy the sunshine while it lasts!

Clear. Concise. Very understandable. Thanks

always learning something new and useful from your channel Stew . good onya mate.

Thanks Stu you've answered a couple questions I had about props.

@DangarMarine

6 жыл бұрын

You're welcome John, great to hear.

Hi Stu, another great informative video. Always wondered what the numbers on the prop meant. Thanks for the education. THANKS FRIEND { from Michigan USA }

@DangarMarine

5 жыл бұрын

You're welcome Ronald, glad the video helped.

Thanks for your video tutorials I've learned so much !

@DangarMarine

6 жыл бұрын

Thanks mate, glad you've been enjoying them. :)

Great illustration

Great video, well done and what I’ve been looking for, much appreciated. Cheers

Loving all of your vids

Great video Stu, it answered a couple of questions I had about cavitation and slippage. Great fun comments f.ex "you might not need to go in a million knots..." 😅. Thanks and rock on .... From Sweden.

@DangarMarine

6 жыл бұрын

Thanks Michael, I was exaggerating, you often only need about 900,000 knots... ;)

Great introduction to the topic, keep up with the great work!!

@DangarMarine

5 жыл бұрын

THanks mate. :)

Another great video, thanks from Canada, Our water is now turning hard (ice) .Looking forward to next year

@DangarMarine

6 жыл бұрын

Thanks Kim. Hopefully our summer boating videos will help get you through the winter. :)

Awesome. i learn more when i can see it in diagrams. This has helped me understand. Im new to boating.

Your drawings are very good by the way!!

Definitely not boring but I now have a headache, damn so much to learn, your a great teacher

@DangarMarine

6 жыл бұрын

Thanks Adrien, hope you head feels better soon!

Very informative and clear information, good job. 👍🏻👍🏻👍🏻

@DangarMarine

6 жыл бұрын

Thanks mate!

I really hope you get the video done on Dangar Island. Every time you have a video outside I always wanted to see more of the island and waterways. Looks beautiful and a place I would love to live. I'm still lucky compared to people living in the a desert area or far from water. I have a 3 minute drive to Lake Pontchartrain and a 30 minute drive to the marshes of Gulf of Mexico for some of the best fishing in the world! Louisiana has great fishing as I'm sure Dangar Island does too. Looking forward to the video!

@DangarMarine

6 жыл бұрын

Hey Jim, I'll definitely get it don't this summer. Would love to go fishing in Louisiana one day!

wow what a treasure I've found! Thank you!

good informative video. Thks for showing the prop selector. good to know.

@DangarMarine

6 жыл бұрын

You're welcome Tyson. :)

I like your channel a lot..very educative and helpful.. Thumbs up from Montreal.

@DangarMarine

6 жыл бұрын

Thanks Mina! :)

Awesome vid Stu................I've been waiting for you to cover this topic. Thanks heaps mate, great info :)

@DangarMarine

6 жыл бұрын

Thanks Ron, glad you liked it. :)

Excellent information...Thanks!

Excellent presentation!

Outstanding video very informative and explained very well thank you

@DangarMarine

6 жыл бұрын

Thanks mate!

Hi Stu, Ah a walkabout Island video. Cool can't wait to see it once you get the audio figured out. Great video on props. Nice to know how they work and matching props for usage on the water. I got news this week. Got a sweet job offer from my last job before I retired. It's temporary up to 6 months and we'll worth it so my video projects will be slow coming out for that time period. Looking forward to yours on Sundays with my morning coffee

@DangarMarine

6 жыл бұрын

Thanks Tim, congrats on the new job. I know the feeling about trying to find time for videos and working. It's been killing me lately!

This made a lot of sense to me. looking forward to the hydrofoil ep.

@DangarMarine

6 жыл бұрын

Thanks mate!

Great expatiation on props. Thank you

@DangarMarine

6 жыл бұрын

Thanks Thomas, glad you liked it. :)

Great information Stu.

@DangarMarine

6 жыл бұрын

Thanks Will! :)

Thank You Sir!!! Very Very good video!!! I learned Alot!!!

excellent,i have learnt a bit more about props.i was not too sure mine was right for the job but now it looks as though it will be ok. cheers.

@DangarMarine

6 жыл бұрын

It's always good to find out the one you have is the one you need!

Excellent video Stu, very informative and clear. Gives me some pointers towards improving a ventilation issue on our club ribs... I'll be very interested to see your doelfin/hydrofoil feature. Thanks again.

@DangarMarine

6 жыл бұрын

Thanks Duncan, glad you liked the vid. :)

thanks Stu this was really helpful

@DangarMarine

6 жыл бұрын

You're welcome. :)

Brilliant explanations! Thank you.

@DangarMarine

4 жыл бұрын

You’re welcome. :)

fabulous video Mate!

@DangarMarine

6 жыл бұрын

Thanks Josef!

Keep up the great videos!!!

Great video as usual. Thanks

@DangarMarine

6 жыл бұрын

Thanks Doug.

Brilliant, simple explanation! Went to West Marine in North East United States... as much as I enjoy this facility I've gotten poor, complicated explanations for replacements! My son... the engineer gave me his interpretation, which was fairly understandable...But DANGLER was easy to understand! Where were teachers of this simplicity and caliper years ago! Bravo my friend !! Thanks again for a great, simple video! Well done.... Thanks, Charlie

@DangarMarine

6 жыл бұрын

Thanks Charlie, really glad to hear it made sense! :)

Excellent explanation of props.

@DangarMarine

3 жыл бұрын

Glad it was helpful!

Great video once again ....I actually got a 75 starcraft supersport aluminum boat the other day and put a 89 evinrude 40hp on it and had 3 props to choose from and try that I had laying around ....and I can't wait to see your hydro foil video...I have been looking into getting one to try

@DangarMarine

6 жыл бұрын

Thanks mate, hoping to film it tomorrow for next weekend.

Lyndhurst NJ is a few towns over from where I live. Hey Angelo, I live in nearby Secaucus! Great video on props Stu. I think props in general are a mystery to most boaters. There’s a lot going on with a prop than most people realize.

@DangarMarine

6 жыл бұрын

Ha! You guys should have a local meet up and go fishing together! :) You're not wrong about props, they are a lot more complicated than they seem.

Simple and straight forward explainaton thanks!!

@DangarMarine

6 жыл бұрын

Thanks mate, glad you liked it.

Love ya work mate!

@DangarMarine

6 жыл бұрын

Thanks Chas!

Chimed in on a the video about relays, fixed that issue and now I am getting some venilation issues. Always know I am gonna learn something when the blackboard is in the background. I blew the motor and bought an identical used one with no prop, bought a super cheap one to get on the water and now I have ventilation issues. Motors mounted in the same spot, cheap prop and cheap hydrofoil are the only new variables to the set up. The hydrofoil has 2 tention screws that hold the hydrofoil to the anti venitlation plate and they stick out pretty far, i would assume they could put a trail of bubbles when underway. Who knows, all I know is there is always something!

@DangarMarine

2 жыл бұрын

Did the boat have a problem before you added the hydrofoil? If it did they can really help, but if it didn't they can make a boat much worse.

@rogerlanoie5848

2 жыл бұрын

@@DangarMarine I always had one on the one that failed but it was attached by holes i drilled thru the vent plate and bolts. Never had an issue. This new motor came with one but it wasn't installed as the motor was on a pallet but its more of a "clip on" style. Slides over the vent plate and then has two fasterner styler bolts that put tention on the vent plate but no holes. I am going to take it off and change the zink to the flate style instead of the skeg lookin like one that hangs from the vent plate.

Great video!

I been searching the interwebs for this prop info, very helpful, subscribed today. Thank you Suggestion for next video- Installing a tachometer for outboard 50hp, trying not to redline my merc classic 50.

@DangarMarine

6 жыл бұрын

Thanks Rob, glad you found the video helpful. I am going to be installing a tacho into my boat soon so I can experiment with a bit of prop selection. My outboard is a 40 HP Honda.

EXTREMELY helpful.. Thx

@DangarMarine

6 жыл бұрын

Thanks Chris, glad the video helped you.

Great information thank you

Excellent! Thank you!

@DangarMarine

5 жыл бұрын

You're welcome. :)

At last a simple explanation

@DangarMarine

6 жыл бұрын

Thanks mate, glad it made sense!

Nice. I learn something.

Great video very informative

@DangarMarine

6 жыл бұрын

Thanks Jeff. :)

Great video! Thank you so much. I bought my neighbors boat last summer. A 17ft. Crestliner with a 115hp Evenrude motor. When I go in reverse I have to do at least 3k rpm just to get it to start moving. When going forward it will plane at about 3k rpm but it takes up to 4500 rpm to get any more speed. When it does take off at around 5k rpm it takes off like a bat out of hell and so do the rpm's. I have to throttle back so I don't loose control. I figure it's got to be the pitch of the prop. I welcome any input on this issue.

Great video... 👍

@DangarMarine

3 жыл бұрын

Thank you 👍

Good taught me alot thanks you...

@DangarMarine

3 жыл бұрын

My pleasure 😊

Thanks Stu for another great video! My instructor and I were just talking about propping a few days ago in class. We reviewed a lot of the same information you provided in our new Yamaha textbook. Hopefully I can get one of your T-shirts soon and send a picture from our school!

@DangarMarine

6 жыл бұрын

Thanks mate. Looking forward to seeing your photo at the school. Good luck with your course!

Great video! Thx

@DangarMarine

6 жыл бұрын

Welcome! :)

Great tutorial....

On my Honda 30HP I just changed from Factory 9 1/2" x 12" to a SOLAS 9.9" x 10", it has gone from a slug to a star !

@DangarMarine

6 жыл бұрын

Interesting to hear that. It's good to collect these experiences and find out what worked and what didn't.

Danger your channel is tits man learned more than I could have ever imagined

@DangarMarine

5 жыл бұрын

Thanks mate. :)

Very nice video ! New boatman here, would love to see a comparison done on a boat - with three different props to understand it more.

very informative!!

@DangarMarine

4 жыл бұрын

Glad you think so!

Interesting indeed, you should teach future mariners, mechanic and boat enthusiast.

Hi I live in Suirname and we have some small motors pushing heavy loads like a excavator getting pushed on a 40hp outboard!

Thank you

@DangarMarine

Жыл бұрын

You're welcome

I'm was running a 11 1/8" X 13G on my '86' Skeeter Strada f80 w/ my 1985 Yamaha 40 HP, and I had a hard time locating THAT prop. It looks identical to the aluminum one you are holding. I did find a 11 1/2" X 13G and I figure if anything, it's an improvement w/ no harm done. I never thought searching for a prop would be so tough. I had to change out he old one due to dings and nicks from the previous owner.

@DangarMarine

6 жыл бұрын

It can be surprisingly difficult to find the right one, that's for sure. I need to replace the prop on my boat soon so I'm going to use that opportunity to do a vid on prop selection.

Great explanation of the different types of props. Could you do one on whether its worthwhile fitting a hydrofoil? I have a 4 stroke 40hp on a 4.4m barra boat. Thanks, Andy.

@DangarMarine

6 жыл бұрын

Ah, you didn't watch to the end, did you? ;) Yep, that is one of the next things I'm going to be experimenting with on the Green Machine.

thanks a lot Stu ... i had a problem that i couldn't identify but now know that.... it is ventilation . I have 5.20 rib with tohatsu 50 long shaft engine (2017) and like to do hard turns when i pull tube or wakeboard . I trimmed almost highest as possible to reach maximum speed (checked before all levels and reach max speed when trimmed all the way up) tomorrow will trim down and will try some hard turns.i tried to buy jack plate to place engine lower on transom but because it is with tiller bit difficult , i have an another option to buy extra long lower unit (can get 7 cm ) but it is quite expensive solution almost 800 usd

@DangarMarine

6 жыл бұрын

It's amazing how much higher the prop rides during a turn, sounds like you're onto the problem.

A great example for how a prop works just like my airplane thanks

You should make a video on how to true a prop. I did it in school and there were no videos about it. Would possibly be a good one to do

@DangarMarine

6 жыл бұрын

Sounds like a good idea, I'll look into it.

Very informative Stu ! In my watersking days, I once made the mistake of using too smaller prop pitch. It over-reved and the piston rings shattered. Lesson learnt the hard way ... 🤔 p.s. (Sorry, about Croatia ... France were a bit good though.. )

@DangarMarine

6 жыл бұрын

Thanks mate. I need to get a new prop for the Green Machine soon so I'll grab a few different ones and do a video on coming the top end RPM. Yes, it was a shame to see Croatia lose but they certainly did very well for a country of their size.

@doverivermedia3937

6 жыл бұрын

Follow up prop vid will be great. In my case there was no rev counter and i just hadn't the experience to realize the engine was red lining by it's screams ...

Thanks for the great vid as per usual ,alot of interesting info.Would have been great to see the different props in action on the same boat but you can`t have everything ...

@DangarMarine

6 жыл бұрын

One day I would like to try a few different props on the Green Machine so I'll definitely film that.

@lordmopton

6 жыл бұрын

Look foward to that ..!

In the same boat, we used diesel outboard the speed of only 9 knots, replacing Yamaha's gasoline outboard the speed up to 18 knots.

Hey Stu, at the start of this great vid you are demonstrating a prop spinning as it goes through the water. It appears it's spinning in reverse, is Johnny going nuts? OCD, OCD, to be or not to be...

My prop started to slip this summer, I hammered in and countersunk some nails, equally spaced into the rubber grommet, parallel to the output shaft and the prop has not slipped since. Start with 3 or 4 nails and add more if needed.

@DangarMarine

6 жыл бұрын

It certainly can stop a prop slipping. I think with larger high performance motors the issue of being out of balance comes into play. Also be careful that you don't get stuck out in the middle of nowhere if you hit a rock or something as the nails will fail completely. Good for your gearbox, not so good for getting home!

thanks mate :)

@DangarMarine

6 жыл бұрын

Welcome!

That's good advice about aluminium propellors being cheaper than stainless steel and better to fit an aluminium propellor. Can you do a video on the Hamilton Jet please?

@DangarMarine

6 жыл бұрын

Thanks mate. I've never seen a Hamilton Jet which is going to make doing a video difficult unfortunately.

That’s the best explanation of prop’s Ive ever seen! (and the drawing was great! :-) best regards from Sweden!

I hit some debris once and torn up my prop. I bought a rebuilt prop from the local marina for half the price of a new one. Took the boat out and it was fine at slow speeds; when I'd give it the beans and try to get on plane the engine would break free like it popped out of gear. Assuming the recon prop was good, I was convinced I had broken something else. It took me three weekends to find that it was the hub slipping on the prop; it couldn't hold under higher RPMs. The recon prop obviously had gotten "spun" and the marina didn't change the hub during recon. Got a refund, bought a new one, and lesson learned.

@stanpatterson5033

6 жыл бұрын

Ha.... not to get off topic here, but my wife learned not to give me the beans or there'd be a lot of something breaking freely. As for the prop... was it that rubber-surround sort of mount like Stu showed in the video? Good to hear that they took it back and refunded your purchase.

@JasonThaine

6 жыл бұрын

Yes, it was the rubber pressed in type of hub. Once it gets spun free one time, it's done for and needs to have a new hub pressed in. Easier to just buy a new prop if that happens.

@stanpatterson5033

6 жыл бұрын

I agree, especially after just having bought it.... might be a little different if you'd had it for ten years or more before it happened.... There are a few comments around to the effect that driving screws or nails into the rubber puts forces against the spline and the outer ring blah blah blah... but again, since you had just bought the thing, I think it was best handled by taking it straight back where you got it. Kind of a shame that that particular weakness is built into the design, where a material will eventually begin to harden and then lose its bond to a mating surface. Wonder why they continue to make them that way, other than being able to sell more replacements....

@DangarMarine

6 жыл бұрын

I'm not sure if it is built in redundancy as such, because I've certainly got many, many years out of a rubber bushed prop. I can also see that they are more user friend to your average boater as you don't need to do anything if you hit the prop on something, just keep going provided it didn't fracture a blade or something serious. On the other hand, I really like the idea of being able to repair the old shear pin design but that might just be me. :)

Thanks for this critical information; explained as basically as possible. Much appreciated brother, but I do have a favor if you wouldn’t mind looking at one of my videos and telling me if the carb set up is correct. *I won’t make a habit of it!* I’ll upload it now and see if you don’t mind taking a look sir!