Tapered Shaft to Straight with Angle Grinder GENERATOR ENGINE
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- เผยแพร่เมื่อ 14 ต.ค. 2024
- An old Briggs Generator Engine with a tapered shaft PTO gets a new life with a straight shaft modification. Now it can be used on Go Karts, Tillers, Pressure Washers, Log Splitters, etc.
Lenox Diamond Cut Off Blade I use:
3" die grinder: amzn.to/2mk98D9
4 1/2" angle grinder: amzn.to/2lJVqbq
These tapered PTO shafts are found on all generators engines. This was a low hours 11.5ftlbs 8hp Briggs engine I picked up for $25. Just scour your local classified and you'll see these come up all the time.
FACEBOOK: / sixty-five-ford-youtub...
Generac Briggs and Stratton Kohler Tecumseh Rockwell Generator Honda Clone Predator Troy Bilt Champion Yamaha
Not many times when the part you need machined comes with it's own lathe! Very cool-nice job!
Very true. Thanks.
I've had people laugh at me for doing stuff like this, but I guarantee that when they get in a bind......... they always come to me for help!
Lots of ways to skin a cat!
Thanks for sharing and take care.
Well said.
I think the most impressive part was when you cut the keyway. THAT blew me away !!
Even as a machinist that would probably be how I would have done it in a pinch. Great video thanks
You wouldn't have been able to live with yourself. It was around .010 off center which most crude pulleys shouldn't mind. If I did it again I would bolt it to the concrete floor or something more solid. I did see one guy who was a machinist just bolt the running engine down to his lathe and run the tool down the crank.
sixtyfiveford yep that would be ideal! but the true talent are the one's that can build stuff out of stuff on hand and build it where its put together better then then when it came from the factory one of my old unlces didnt go to college and built asphalt distributors better then college educated ones these distributors had simpliest and reliable state of the art precision cab operated controls for all the systems on the back of the truck then all the bigger company had at the time Arizona municipality order a fleet of them and they were cheaper also then the other's too!
sixtyfiveford I would have lived with it as a welder and a machinist I have learned when close enough works
Thanks! This video helps me a lot!
I have a 3gpm, 2500psi CanPump thats 5/8 shaft, but I'm buying a 212cc predator motor from harbor freight thats 3/4 shaft, and I've been searching for hours trying to figure out how I can make it work. Then I found your video!
I have done this several times when I had to modify an engine crank to fit an application. A little harder to do with a vertical shaft engine but it can be done and with no wobble. This is why I love your videos. Thinking for yourself and very practical.
Awesome. You do what you need too with the tools you have on hand. Thanks.
Nicely done and for a pulley and belt it's perfect.
Thanks Steve.
It's amazing what can be done with an angle grinder. Brilliant job. Keep your videos coming they are always appreciated. Thank you
Thanks. It should work out great.
Heck yeah - that turned out great! Making a non usable item so it can be = Perfect.
Whatever gets the job done. Thanks.
That was some badass freestyling grinding!
Thank you Sir!
Giving us multi talented Craftsmen some much needed light!
God bless you and your loved ones.
Thanks for watching.
I am very impressed. I did not dream this could be done so quickly and easily. Thanks for the tip.
It went a lot faster than I though it would. I was surprised out how soft the metal was.
Very helpful, ive got a 10hp that was practically useless until now.
When I saw this video I thought to myself, great, I found someone as crazy as I am to take a grinder to a new engine shaft. But it turns out my problem is a bit different. I am replacing the engine and re-using the generator head/stator. So I need to grind a taper onto the new shaft to reuse the generator. But now, after watching your video, I measured the tapered shaft and it is indeed
.8-ish instead of the dead nuts .750 I thought it was. I held a tape measure up to the shaft and said, yep, 3/4" and didn't even consider it might be a tenth larger. So thank you for saving me from purchasing the wrong engine. I suppose I could jump up to a 1" shaft and grind it down, I'll have to think more on this. I do have a friend with different milling machines and the expertise to do it the right way if it can actually be done. So I think I'll talk to him first and see if it is possible. Thanks again.
Update: I ended up buying a new Kohler engine with the correct tapered shaft. The more I researched the more I realized I needed a tapered shaft and not one that I ground myself. The clearances between the rotor and stator are pretty close and so a hand grind on a shaft was probably not the best choice. Anyway, the reason I'm getting back to you is that while reassembling the generator head on the new engine I see that I damaged one of the the brushes during disassembly. The best price for a Brush Holder Assembly Part Number: 91825GS I could find is $30, most want 50 or more. Is there a way to just put new brushes in the brush assembly? I spent $500 for the Cadillac Kholer engine, I'd like to avoid spending more if I can avoid it. I'm going to look on ebay for universal style brushes while I wait for your reply. should be a simple repair if I can find some.
Update on the update: I ordered the part, looking at the old one, it is not designed to be taken apart and brushes replaced. If it was possible to take it apart it would have only saved me about $20 anyway.
what a deal,thank you for showing the solution,electric start horizontals for my mobility car swap trike are hard to find,you just fixed mine,thanks again
Great video. I have a 10 horse Briggs that I want to put on a go cart. Ran into the same problem. I was stumped. Thanks to your vidio. Now I can use it. Looks simple. Great vidio thanks
As you correctly said, It's a one cylinder (and a 4-stroke!) so it vibrates like crazy any way. And belt drives aren't that sensitive when it comes to vibrations. No brainer: nothing to loose, all to win. Nice job well done!
Thanks. Yeah, it should work out well.
Sweet! I've had a 10 hp laying around for a few years that's got the same issue, now it'll be useful. Thanks
Thanks.
No wobble at all. I smiled the whole video thinking there was a machinist somewhere yellin at TH-cam saying " you can't make me close my eyes." thanks for making and sharing Moe, I love your endings too, the dog was cool,always something to look forward to.
Thanks Robb.
Cool, I have a couple Briggs pump motors that may find uses now.
I'm going to have to try this tomorrow, Ive just replaced a 1inch output crankshaft that had snapped on my 15hp woodchipper and the bloody pulley won't fit all the way on.
Great video. I am always tinkering about with these engines and tried many times to find adapters. No more looking, I am just going to have a go at what you done. Might botch one or two up but like you I pick them up cheap. Definitely worth having a go. Excellent material man. Well worth subscribing to this vid. Just earned a fan in Ireland.
Thanks, I'm glad you liked it.
That is cool, I saw the tags on your wall. My brother and sister are from Alabama and they live in Utah now. I am still stuck in Alabama, because I can't afford to live in Utah!
My brother in law is from Alabama and had lived here with my sister for 10+ years. They literally just moved back closer to Alabama as Utah is ridiculously priced right now.
@@sixtyfiveford probably all the liberals trying to get away from California, but what they will do is move to Utah and vote for the same liberal policies there, and turn it into a hell on earth like California!
Thank you so much for this video.I was wondering if I could grind down one of these tapered shafts by cranking the motor and using a grinder and you showed exactly what I was thinking.God Bless.
You bet
I did this and mine egged out. My engine hand a bell housing that couldn't be removed to get an accurate grind. I think the Lovejoy coupler will mitigate any wobble, but that begs the question. Did/does yours have vibration?
On a flexible V-belt I recon it will work nice. I have the same conundrum between a nicely working 1 cyl Yanmar diesel copy, a bearinged cone clutch and no lathe. My local Tony´s seems uppidy about embrasing the job
I ended up using this motor with a belt drive and it was un-noticable any out of round. If I did it again I would have a helper adjust the rpm erratically to take out any harmonic vibrations. I would also bolt it to something heavy.
I love it. I have been avoiding that who thing. Now you will see me do it. I get pressure washers in all the time. They just rust to the 3/4 inch hole in the pump (a different issue). But I will try this.
Thanks Moe
Thanks Bruce.
Because of the crank shaft weights, grinding in line with the cylinder would probably have an ever better result actually.
Got your channel from Ken at 1970chevelle396, great content!!
Awesome, he's a great guy. -Moe
Love your lateral thinking, its a gift to have.
Thanks.
Looks like a good job with the grinder; always a way to get er' done eh?....cheers
The grinder is a very versatile tool.
It's in my arsenal 2 and couple diff sizes. never know when you might need to make a clock or something eh DIY my favourite term esp when it comes to spending bucks.....cheers
Watched both your videos on this and pretty much answered all my questions. Thanks a bunch 👍👍 I have a 13 up McCulloch generator motor. Since they went bankrupt I can't find a stator for the generator anywhere. Now REBIRTH of a 13 hp motor will begin.
That's great. I would do a few things slightly different. One bolt it down to something heavier/more solid. Second vary the speed of the motor(have someone rev it up and down) and grinder(turn it off and on) to stop harmonic vibrations from making the shaft out of round.
I thought about the same with mine except using the engines bolt holes and making a makeshift tool rest... I’ll be doing it soon just cause I have two of these laying around and wanted to make a minibike or something of that nature
That would be neat.
when you consider the time to take it apart to actually machine it on a lathe . makes perfect sense to do it this way solong as you do and know what you are doing like thinking of what angle to grind from and why, like you explain. Use of sandpaper on shaft is a accepted engineering method.
Well said. Thanks.
This is awesome, thank you for this video. I'm in exactly the same scenario - got a 10 Hp engine from a broken generator & want to "upgrade" my 8 HP wood chipper. Funny enough I've seen cheaper wood chippers that use direct drive tapered shaft engines, but I picked up a belt drive model I found a deal on, so I think I'll be attempting your method 👍
If you can have a helper hold it down to the concrete and vary the RPMs it gives you the best results.
@@sixtyfiveford Cool, thanks for the tip. I'm still kind of split between just putting another generator head on the engine since I *do* actually want a bigger generator, but if I do put it on the wood chipper, I'll take that into consideration. I have an old air compressor tank that has a hole in it, was thinking of using where the motor and pump previously mounted on that, to use to bolt the engine into to keep it still. 👍
I've literally was wondering if this would work because I have a 12.5 horsepower motor that I want to put on something and now I don't feel like I'm that crazy by doing it!! Good video...
Man after my own heart I am glad I am not the only one who does bush mechanics and who does not care what the norm says cheers from the uk 🇬🇧
If it works it works.....👍
The file is probably ok, just loaded with metal. You can buy file cards to remove that pinning. They're like very short bristled wire brushes.
Nice work.
I've used this method to get close afterwards used several different grades of emery cloth. Screwed thin slices of wood on each end held against spinning shaft in a horseshoe shape. Working my way to 1500 grit sandpaper dry/wet. Person I did this for commented that it looked better than new
TH-cams no1 shadetree mechanic........................Brilliant cheers
Thanks mate.
Sweet. Cheap easy fix for an otherwise unusable engine. THX!
At first it sounds crazy- then it turns out to be brilliant. Nice one.
Thanks Kirk. -Moe
Awesome dude... u r my kinda guy..... sometimes is not even about the money but about the enjoyment in doing it
defiantly went better than I thought it would ill have to try this
Thanks. It should work out well for a project.
I bought a 15kw generator with a V-Twin Honda and I saved the engine. Was hoping to find an adapter or a new crank with a straight shaft but ended up selling it.
Awesome video, thanks for showing that this is possible with common tools at a home shop. I'm going to be grinding a tapered shaft on a 10hp diesel so it can be used in a gokart.
AWESOME! I wasn't worried about ruining this engine and the straight shaft isn't super critical with a pulley/belt. Any slight imperfections would be canceled out by the drive belt. I have research a little since this video. I think I got harmonic vibrations from the motor and grinder and it lead to a little distortion in my grinding. I think these harmonic vibrations can be minimized by varying the speed/rpm of the motor while grinding. And the same goes for the grinder by turning it off and on while grinding I can vary the speed/rpm of the grinding disc.
Life hack. Bolt the angle grinder to the engine using side handle. No egging. perfectly round! Done it twice!
Your defiantly better with a grinder than me. If I tried to do that I would have accidently taken to much off of it.
I took off a little more than I should have, but it should work just fine.
Good job Moe! I see you film at night like me, According to your watch it looks like it is 8:30 or 9:30
Yeah, it seams to be the best time to do videos.
Great channel! Need to find myself a generator that fell off a truck :D
It would have saved me $25 if I found it right after it fell off the truck.
I would definitely go with the sandpaper (coarse to fine )..cut the axe and sandpaper to the exact
length that you need...Wrap the sandpaper 180° keep it nice and taunt ...the engine vibration wouldn't matter. It takes a little longer but it always gave me the best result! 😉
Good video and tip! That was a good modification that will give you more versatility! That engine sure does vibrate though. Thanks for sharing!
Thanks. Next time I'll bolt it to the concrete or something heavier.
sixtyfiveford I was just curious that when you do find a use for the engine, might it be a problem vibrating whatever it ends up being mounted to? Or as you said, should be ok if mounted to concrete. Haha
Good last resort fix def. also if you can find a bad motor of the same brand and HP with the shaft you need you can swap cranks. But awesome work brother.
If I had access to another crankshaft, then yes that would be ideal.
Hey Sixtyfiveford, good job! Rather than spinning the engine up and dealing with the vibrations, why not remove the spark plug and put a bolt into the threads on the end of the crankshaft. You can chuck-up the bolt (once you saw off the head) with your drill and take the diameter of the shaft down with your flap disc just as you did in your video. Cheers
Good idea. I did think of that afterwards, running it with a drill from the flywheel side or the pto side. But I may still have issues with the crankshaft counter weight adding vibrations. I think I need to bolt it down to the concrete floor or something that will steady it better.
@@sixtyfiveford remove the piston and rod and head and then turn the bare crank in the bolted down case. Very little vibration from the out of balance crank in the mass of the block and support. Will probably do it this way as the motor is waiting on rings anyway. Youll still need to drill and tap the end or is the bolt hole deep enough to trim the end to 3/4 length standard? Does anyone make a tapered (T30?) to straight adapter that just bolts on? Would be a challenge to make something like that cheap I think....
when u got done mounting the pulley.Did u put a dial indicator on to see how much run-out it had.Just courteous.lol
It ended up around .010" out which is negligible with any belt or chain drive.
I seen machinists use files on shafts they would rotate the stroke of the file and moved left and right..this with your grinder would offset the vibrations (harmonics)of the engine running
Done that and seen a Briggs mounted to a lathe bed and the shaft turned down under it's own power. That was 25years ago when I started as a machinist. That engine is still being used on a belt driven trash pump. Must have been alright.
I like that idea. Ive been using a drill as a lathe and a file. ill have to change that to an angle grinder and drill. Lol
The angle sure does remove material fast.
Hoping I can do this to the 10hp generator engine I have so I can put a go kart torque converter on.
We already cut a keyway and a normal centrifugal clutch on it.
I just put a torq converter on this one.
sixtyfiveford
Cool deal!
It was one of those : I could buy a converter and see if I can mess with the crank to work, or find another engine.
I feel a little better about attempting this after someone else was the guinea pig 😬
Hi there can you put a pressure washer pump on that now ? i have a GX390 with a tapered crankshaft . would i be able to replace it iwth a 1 inch shaft ? or get an adaptor to fit a pressure washer pump on it ?
Works great on electric motors with gears cut right into the shafts, too.
Good tip.
The old mexican lathe trick, I love it.
HAHAHA. That's funny.
Great video! I want to know how you found that broken gen for 25 bucks. Right place at the right time, Craigslist, ??
I find them all the time for free to 50 bucks on craigslist. This one was online for a week before I saw it. No one wants them.
Pretty good idea. Good work too.
Thanks Man.
Geez - I have a 5hp briggs flathead that has splined shaft and I need it to be a keyed shaft! Should I weld between the splines and cut a keyway at the end?!
If the splines are a stock shaft diameter (3/4") you can just slide a pulley on. Then make a custom wedge key to fit in any of the spline grooves.
what we have is a centrifugal clutch - working on a buddies mini bike - he gotta different motor and wants to use the same clutch - both are briggs 5hp flatheads. It is 3/4" - would it work the same with the clutch?
I would just grind down the splined shaft to allow a 3/4" clutch slide on. If you need to cut a keyway you can or if the grooves from the spline are deep enough just make a custom key to fit the V groove spline and the clutch.
bet you the high side coincides with the vibration of the one cylinder !!
That is exactly what I did except I did not cut a key way as I had a pulley with a locking centre.
It worked. I would probably bolt it to something like the cement floor next time.
Yeah good idea.
sweet success is success
I bought this engine just to try it out. Still wish I had a lathe.
You can't go wrong with $25
Lathes are nice but i have a feeling what they say is correct. How ever much your lathe cost you will spend at least twice as much on tiling and measuring equipment. The more i practice the more i learn how much i don't know lol
Nice job!
Thanks, it worked out well.
I've got a big 10hp single cylinder diesel thats about to get this treatment, diesel go kart time.
Awesome. Bolt it down to something heavy.
i wonder if my small engine friends know this trick.. i will facebook it to them.. goodjob..
It's an easy way to get a cheap engine.
I know this may sound like a dumb question but what if you needed to use a horizontal engine off a pressure washer for a generator just weld a longer piece for the shaft and taper it down would that work?
The taper shaft is very precise and it is what balances/holds the heavy generator rotor. Personally I wouldn't be able to hand grind it precise enough to be accurate. You can generally buy a good generator engine with a bad generator head for $50-100(sometimes less) and sale a pressure washer straight shaft engine for $50-100
It's a handy trick to know. Cheers bud.
Thanks mate.
Brilliant Mate!! I love the shit outta those Lenox Disc you turned me onto!!☺
Thanks. Yeah, those Lenox discs are a favorite of mine.
I don't what to say,But I do know you got idea for everything I was wondering on how to do it,Eg;DIY. Thanks again for the info.
Thanks, I'm glad you liked it.
Where can I buy a tapered shaft engine because I have a generator that needs a new motor with a tapered shaft.
There used to be a placed called tulsaenginewarehouse.com but I think they went out of business. They sold surplus new engines for decent deals. I'm sure there's another company out there doing the same. However, generally I just search local classifieds these days and buy another complete generator with dead power head for sub $100. What engine brand is it?
Love it
Good job man, definitely my kind of work, if you would have took that engine to machine shop it would have cost you more than the new engine... and for 25 bucks you ain't got much to lose just get er done!
Thanks, I'm glad you liked it.
good deal. I have a 15HP Generac 12vdc elec. start motor that runs the NUTS. the genny part is junk! now I know I can put this on m,y Go-Cart. I was told it can't be used on a Go-Cart do to the tapered shaft. do to this video, I am going to have a kick ass Go-Cart. Thanks bud. Thumbs up, plus I shared...
A 15hp would make one heck of a go cart.
A HELL of a GoCart. I can now make that Possible with this video!!! thanks..
Great Work !! Way to think outside the box!!
Thanks.
👏👏👏👏 fantastic job
You have New Subscribers
I have a 10 hp Honda from a generator, now I know what to do with it! Thanks.
Awesome.
How would I lock a gokart clutch in place if I did this? I'm new and have an engine with a similar shaft
I had used a bolt and washer previously, but what do I do to keep the clutch in place once I've got it on the shaft?
good job for someone that didn't have the right tool to do it right I would have done it the same way
Thanks.
hello and nice job ? i have a Dewalt generator with a 270 engine that was run out of oil needs a piston and a rod not available from Dewalt what can i put in it model # DG4400b or DW177fd-d
That is a going to be a HONDA GX series Cloned engine. In theory it would use all the same parts as the Honda GX270 engine but sometimes the clones change stuff up just enough not to work. If you are trying to use it again as a generator, I would say just get another engine as the electric head is the #1 thing to go. You can find running generators with a bad electrical head for under $100 on classifieds to make 1 good unit. Parts will cost you way more than this.
@@sixtyfiveford thank you looking
Nice. No fear, just do it and make it work.
Sometimes that's the best way.
Amen, buddy!
If you take out the spark plug and spin it with a drill you can get much better results
Probably.
WHATEVER WORKS IN A PINCH AND SAVES MONEY
It should work out for whatever I decide to use it on.
Now that is cleaver! I will keep that in mind thanks!
It seamed to work out good; good enough to use.
why not use emery cloth strip or band saw strip instead of grinder? i would think it be more even that way.
That would take at least a dozen hours to sand though with emery cloth.
Brilliant, nice one!
good to know...thanks
Thanks Joe. -Moe
Wow nice video. I like backyard engineering waste not want not , save a lot of doe .
Thanks.
Can you put a predator 212on a golf cart and will it work
Most golf carts have larger 1" shaft motors for the clutch. However people on Ebay sell adapters for around $10 and you can put a Predator 212 with it's 3/4" shaft on.
Well done :-D, that worked better than i expected.
Keeping the grinding the same depth all over must have been a pig, i guess you took off small amounts all over then had a measure to find the high spots.
The small error don't matter, a good drive belt will not give a dam :-D
Thanks. I figure the minor amount it is off will easily be compensated for by a belt or even a chain.
Hey how do u have the oil sincer hooked up I'm doing the same thing with the same engine I'm putting it on a 2seater gokart
Most of the time I leave the oil sensors. If it keeps cutting out from riding too hard you can slightly over fill the oil or just unplug the connector.
@@sixtyfiveford thank you us so much I got it finish and ready for the gokart now thanks to your video now my clutch fits on the shaft
@@cheyennecunningham4728 Awesome
What's that measuring tool you used to measure the shaft called?
Caliper.
Neat trick, Moe!
Thanks. Next time I'll bolt it to something even more secure, like the floor.
Another great idea and a great video!
It got the job done. Thanks.
Sweet
You cracked me up! I like your problem solving skills... :D
Thanks for watching Stephen. -Moe