I bought one very similar years ago. I "went through' it like you have, cleaned and brushed it. I own other RA's but this one is my favorite. So smooth and consistent. Great saw.

Thank you for the review. I have one very similar given to me 20 years ago, a north American 7740 model with motor made for Japan (single phase 100V 50/60Hz) . I replaced the motor bearings after a US American friend kindly brought back imperial-sized ones for me. The reset button failed and as I could not repair it I removed it and it works fine without it. I discovered that the motor needs a thick wire supply as a low amp source can't get the motor started; certainly it would be easier with 240V requiring thinner wire for the same amps. Mine has the kickback on the front rather than at the rear. I think this might be because in north America they cut on the pull, whereas in the UK they cut on the push (? could be wrong). There are after-service lower blade guards available for some models, before they became standard. Can't find any for mine but they look simple to make and fit. I use it for cross cutting only as it seems somewhat intractable for ripping - there are easier ways. Using a dado set seems quite dangerous so though it came with one I have never used it. I only had metric holed saws but could finally fit one with a saw hole adapter. Interestingly Japan has some saw benches that are metric apart from the arbour, usually 1/2inch !

Roger, Enjoy your videos. My father passed away in January, and in his garage is a DeWalt 7770 Radial Arm Saw which probably belonged to my Architect / Builder uncle and came to him by way of his sister, but both of them have passed as well. I turned it on and it hummed a steady tone like it was trying to turn the saw, but couldn't, so I shut it off. About a week ago, I did same and it didn't even hum. I ran the multi-meter on it and removed the housing as you did in your video, so I now know the switch is not faulty. I also bypassed the switch by connecting the wiring together by the switch, then plugging it in and it still doesn't turn over. I began to attempt to separate the case to test the internal wiring, but can't get the two halves apart. Also, the crank assemble bolts were bent, but I got one out and now can't seem to get the crank reassembled...time to donate to a local machine shop to rejuvenate and sell for a couple hundred bucks? (I was hoping could find/remove brushes or ?? as it's rather greasy/dirty and hoped to find the electrical short was dirt/grease related) Thanks for your thoughts, Jim

Well I am so pleased to see yet another example of someone who cares for older finely made equipment. I also recently found a DeWalt RAS bargain at a yard sale. I paid $40 for the gem. Yes I need to make a stand and a top for it. Mine is from the late '50 early 60'. Thanks for sharing your find.

@rogerwebb9600

4 жыл бұрын

Thank you, for watching, Please like, subscribe and forward the video on to a friend, Australian Inventor Roger Clyde Webb;-))

Great job on your Nice radial arm saw. I have a Dewalt Black and Decker Model R1450. My neighbor who passed away had it and his son put it at the curb. I put new table wood on the back and upright wood. Also put on an 8 inch blade and taped up an area of 8 inches on each side of the blade to keep hands out. Be safe wood working!

@rogerwebb9600

5 жыл бұрын

Thank you, for watching, Please forward the video on to a friend, Australian Inventor Roger Clyde Webb ;-)

Great work, Roger! We have a 5hp DeWalt from the 50s or 60s and like you said, those things never stop running.

I never get bored watching your video's 😁

My neighbor gave me one of these today, looks to be in about the same starting condition as yours. Thanks for sharing your process with it, i'll be doing something very similar soon.

It's going to be a great saw when you get it finished. Cheers Peter

Hi Roger .. I have found your video so helpful as I have recently bought that exact model machine . I have always wanted a radial arm saw and I am also restoring this old boy.. I would have liked to send you an pic of this one because the arm has been extended ( very proffesionaly) for whatever reason.. it was sitting in an old pawnshop when I saw it.. the motor and a few small things need to be restored.. But thanks for your video.. I am from Boksburg in South Africa.. Greetings from a fellow wood / tool fanatic..

Excellent video! I have the exact same saw in the garage (used to belong to my dad). Only difference is mine is 110v . Fantastic tool; planning to put a new table on it this spring. Thank you for sharing the video!

Hi Roger, I still have my dewalt radial arm saw that I used in the 70s it is rusty like yours and this video has inspired me to clean it up and restore it , I looks like I have lost the Bush that holds the blade on I’ll check next week. Looking forward to seeing your video on setting up the table ECT and checking for true. Thanks again , cheers David from HUONVILLE .

@onlyiwilknow

5 жыл бұрын

David, I am in the same boat. This video inspired me to fix and use it again!

great job on a great saw good work Roger

I have the same saw but 120 volt for Canadian power supply. The anti kick back device is backwards and should be rotated 180°. The motor has ball bearings and they sound like they should be replaced. I purchased my saw new in 1972. I replaced the bearings several years ago and the motor runs better then new. I suspect that the new bearings are better quality then the manufacturers.

Hi Rodger, I just bought a T1531 Dewalt in need of some TLC. your video was very informative but also great to see your involvement in laser etc. My son and I have invested in a laser cutter / engraver and are enjoying the learning process 👍 keep up the good work. God bless.

@rogerwebb9600

3 жыл бұрын

Glad it was helpful!

Just picked up a Dewalt GWI model RAS from 1958. It's a 1.5 hp motor. It has a switch for 120 / 240 volts.

@rogerwebb9600

4 жыл бұрын

Thank you, for watching, Please like, subscribe and forward the video on to a friend, Australian Inventor Roger Clyde Webb;-))

This one is virtually identical to my black and decker one.. but after seeing this and some of the comments I found out they are one in the same under stanley brands :o)

Hah, go figure, the one part of yours that worked is the one part of mine that is broken! I recently acquired this same model of machine, all in working condition-except for the brake. If it was just me using it, I wouldn’t be so bothered, but I’m going to have students in my shop and I’m really not comfortable letting them use the saw if it coasts. Any tips on how to repair (or even get into!) the manual brake?

I have a Craftsman àbout the same size and age. Great video.

Rodger, It was so nice to see this video. I have the one I think prior to this one and actually still in reasonable state. Only the up/down shaft that is slightly rusted and therefor a bit sticky up and down - So I eagerly watched what you did. Mine is "Commercial Duty" - Whatever that implies :-) I am very limited to working space o I want to build mine into a workbench with a router and perhaps a sanding wheel on the side (Maybe an upside down jigsaw too). I just have so many double tolls and do not get to use them any more as it is too much of a schlep to get them out. How about building a wooden bench for this saw? I still have the manual!!!!

jan 2022, my 740 is in mint conditionI am the 3 rd owner

I have a very similar saw a 7740 type 3. The motor on mine needs to have the relay replaced. Do you have any idea where I might find one a the part has been discontinued. Thanks

I wish you'd actually started it with a load. I have the identical machine which refuses to do this. I am almost dead certain it is a capacitor problem, but I can't even find where it is located, let alone what size I need to replace it.

Hi Roger David from HUONVILLE, , question for you please , when you put the blade on was there another flange behind the blade ? If so what size is it please. Cheers David

Black and Decker own's DeWalt.

@rogerwebb9600

4 жыл бұрын

Thank you, for watching, Please like, subscribe and forward the video on to a friend, Australian Inventor Roger Clyde Webb;-))

does anyone know how to "unlock" this radial arm saw? The on/off won't work without unlocking it with a special key - which is lost...

@MaxAC

3 жыл бұрын

Just take the assembly apart. It is a plastic piece. Shouldn’t be difficult to modify to work.

either you got up really early or you worked all night at that. cockadoodle doo. Just bought a dewalt 1251, looks in far better condition than yours looked so I'm looking forward to giving it a little tlc.

Black decker radial arm saws are dewalt designs. As for all the other dewalt power tools ( chop saw, grinders circular saws drills drywall guns) they were actually black decker industrial line rebadged as dewalt. And dewalt routers are based off Elu routers, a Swiss company B&D also bought. Dewalt only ever designed RAS.

@BeachsideHank

4 жыл бұрын

B&D used the DeWalt name as their defacto moniker because DeWalt enjoyed a bullet proof reputation as a very high end tool maker- B&D didn't have much respect amongst professionals, and enjoyed an undeserved bootstrap ride with that attached name recognition.

Hi I'm electrical contractor based in England... I was just looking at the plugtop with the broken earth pin... Can you still plug it in like that with these types of outlets? In the UK we use socket outlets to BS1363.... BS1363s are shuttered...the earth pin is slightly longer...so when you plug in it opens the shutters to phase & neutral.... If the earth pin is broken....you can't insert the plugtop...

@alanwright5437

6 жыл бұрын

Hi Glen I'm a retired builder in Australia, I have come across that here in Australia in 15 amp power points but not common in standard 10 amp sockets probably because most appliances are double insulated nowdays.

@alanwright5437

6 жыл бұрын

Hi Kate we do have them in Australia because I have them in my workshop at home. They are just not very common. I have seen them on other jobs, and my electrician has installed them for me on some jobs (retired builder).

@alanwright5437

6 жыл бұрын

Hi Kate, just had a look at my machines in my workshop about half are double insulated but still have an earth plug on them for exactly the reason you say. you would not see them on a 10 amp power point in your kitchen as most appliances don't have an earth pin as you say.

@glennmoreland6457

6 жыл бұрын

Alan Wright BS1363s are a fused plugtop... They take BS1362 fuses... These typically come in 3A, 5A, 10A & 13A... you can get 1A ones as well...although not common... The BS1363 plugtops and socket outlets are rated at up to 20A...

@glennmoreland6457

6 жыл бұрын

Kate And if someone decides to put an unearthed plugtop on an item of class 1...? Think please....😉

does anyone how to get the yoke pin unlocked? i bought a used ras 740a and the pin for the yoke is rusted and stuck. thanks

@rogerwebb9600

3 жыл бұрын

WD40

@tadatran8463

3 жыл бұрын

@@rogerwebb9600 My apologies for not being more descriptive in my question. Let me start over. I already sprayed wd40 on it and waited for 2 days. I tried to move the pin by tapping it lightly with a small hammer. I also tried to wiggle the pin using a plier. I doesn't move at all. Do you know if there's a way to unscrew the pin and the housing around it? Thanks

TIME MARCHES ON - 👀 that blade is the first thing to go. A new Freud will have a third the cutting effort, twice the accuracy - something the Radial Arm saws need for lack of inherent rigidity!

WD40?? Noooooo! Read the label. Look it up! Not for bearings! For lube all - over try wax with acetone - heat it and brush it on then wipe off excess. Works a treat - never dirty - great lube!

@MaxAC

3 жыл бұрын

No kidding. I bet those bearings didn’t last too long.

I have the same saw mines just in better shape

Hi Roger, I really like what you do and learn a lot from you, but your claim of 2HP motor is just not right. The closer answer is 1HP. I am sure you multiplied motor amps x motor voltage and got 1440 watts then decided by 746 (watts/hp) to get 1.93 which you called 2HP. But the 1440 is total power with units of KVA. A typical single phase motor of this size has a power factor value of about 0.53 PF. PF = KW/KVA. So, the KW = PF x KVA or 0.53 x 1440 = 763.2 KW or 1.02HP. Most of the time, the motor manufacturer never puts actual HP on the nameplate. If the did, nobody would buy it, claiming the motor is too small. So, they leave it off. Another example of deceptive claims are the HP ratings on shop vacs. Those tiny little motors that are only 4" dia x 4" long are nowhere near the "apparent" or "delivered" HP values quoted. If anyone wants to dispute my claims on motor HP, just Google 240V single phase 2HP motor and look at the nameplate data. You will see the motor HP is about 9Amps. According to Roger's calculations, that motor should be rated about 2200 watts or almost 3 HP. If you want to pursue this thinking further, Google Power Factor. You will probably see a triangle with the horizontal line labeled real power and the vertical line labeled imaginary or reactive power and the longest line labeled total power. Roger used the total power to calculate the HP, but in reality we should be using the real power value to calculate HP. The key to understanding the "why" for this is only the real power does any work. The imaginary or reactive power only magnetized the motor. It is called imaginary, not because it does not do any work, but because it is the imaginary part of a complex number. This is the time when you should have paid more attention in high school math class when they talked about real, imaginary, and complex numbers. If you have read this far, thank you for sticking with me. Google has a wealth of info on complex numbers and power factor. One more snag that always comes up and that is the "j" written beside the imaginary number. The "j" is used by electrical engineers and math people use an "i" to mean the same thing. The electrical engineers probably did not want the complex "i" to be confused with the "i" for current (amps). I will stop now as this will get to be real messy if I go on any longer. Please feel free to comment.

You know

@rogerwebb9600

4 жыл бұрын

Thank you, for watching, Please like, subscribe and forward the video on to a friend, Australian Inventor Roger Clyde Webb;-))

Hi Yes it is a stupid guy to cut the ground wire, Saint-Joseph de Mékinac, Trois-Rives, Québec et Labrador. 2019 10 30

Hi Roger Webb Sharon from XHC again how is everything going on i am still waiting for your replying on e-mail for further business hope you hearing from you soonly

Bro, it clearly shows 740 when you call it a 770! ROFL