keyway in crankshaft

[tlet]

I have a 10hp tecumseh motor that I removed from a generator.
I am looking to purchase a centrifugal clutch but they all seem to require a 3/16 keyway on the crankshaft. My crankshaft is tapered to 5/8in and does not have a keyway, its smooth. Can I still use this motor for a gokart without the 3/16 keyway?

Thanks.

 

[Russ2251]

Biggest concern is the taper. Generally, clutches are designed for straight keyed shafts.
Key serves to lock clutch into position so it cannot slip/spin on shaft.

 

[Kaptain Krunch]

You could probably have an adapter machined, but its not worth it IMO.

 

[Russ2251]

What was wrong with generator?
Usually they are an easy fix.

 

[tlet]

Is it possible to change crankshaft on motor? or Any ideas how I could still use this motor? The motor runs fine. I bought an electric start generator so I thought this would be a good motor for a go kart project with my son.

 

[Russ2251]

Is it possible to change crankshaft on motor?

Absolutely, and can run anywhere from $60 to $240, plus labor.

Better yet...put generator together and sell it. With $$$ from sale you could purchase a 6.5 Honda clone and have money left over.

 

[anderkart]

Are any of the Snowmobile converters made to fit right on his 5/8" tapered pto?

 

[Russ2251]

Are any of the Snowmobile converters made to fit right on his 5/8" tapered pto?

Unlikely (if not impossible) that one can be found that will match up.

 

[Kaptain Krunch]

Are any of the Snowmobile converters made to fit right on his 5/8" tapered pto?

No, not unless some really old sled used a very small PTO, most of the ones i have seen have been at the very least 1".

 

[porsche930dude]

if it taperd down to 3/4 you could file the whole shaft down to 3/4 and dremel in a keyway. But 5/8 is too small. watch ebay for a used crank that stuff usually goes for pretty cheap

 

[anderkart]

Ten-four Kaptain.

Man, someone needs to market a high quality/ inexpensive adapter to run a 3/4" or (if necessary even) a 1" clutch for all these tapered pto motors out there.

 

[Kaptain Krunch]

Ten-four Kaptain.

Man, someone needs to market a high quality/ inexpensive adapter to run a 3/4" or (if necessary even) a 1" clutch on these tapered pto motors.

With he cost of material and machine time would probably not be worth it.

 

[anderkart]

With he cost of material and machine time would probably not be worth it.

To make only one I agree, but I'd bet theres Machine shops sittin around twiddling their thumbs that'd be tickled to knock out a run of 20, 50 or a 100... If they could immediately wholesale the lot for $20 a piece.

Then retailers like BMI, Go kart Supply or Northern Tool could meyby offer them for like $30 or so. There'd never be a huge market, but once word got around I think theres enough tapered pto motors sitting around gathering dust they'd probably end up selling quite a few.

I'd think at least some guys buying these adaptors would also be making aditional clutch/eccetera purchases they wouldnt have made otherwise. So that'd be added perk for a retailer that stocked the adaptors.

 

[Russ2251]

but once word got around I think theres enough tapered pto motors sitting around gathering dust they'd probably end up selling quite a few.

Agreed, but the demand just isn't there.
Profit, profit, profit.

 

[mr fixer]

could a epoxy be used to put on?slide on and put keyway in clutch? just a thought.

 

[porsche930dude]

the problem with making a taperd adapter is that most of the time taperd shafts vary from motor to motor. Some have steps in them or threads at the end and some only taper half way down the shaft. Theyre not all the same.

 

[anderkart]

Thanks porsche930dude, I was kinda wondering about that...

 

[TurtleMann14]

i would say the easiest way would be to put a gear on the crank to the clutch