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CS6 loose flywheel

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ajrolfe:
Hi, I wonder if anyone has a solution to my problem
Startomatic with the heavier flywheels and the one with 2 grooves to run generator has a problem.
The shaft is 50.4--to 50.8 in diameter, but the hole in the flywheel is bigger. Previous owner had 'solved' this by putting 2 hacksaw blades ontop of one another in the keyway and then hammering {with a lot of misses} the key home. True the flywheel no longer wobbled, but as it was now off centre the result was a CS 6 trying to walk out the door. Quite unnerving.
I can get it bored, sleeved and a new keyway spark eroded but its a tad expensive at £5-600.
i also need a 3kw generator to go with it.
Or maybe it would be easier to buy a Startomatic and sell this engine.

Any thoughts?

ajaffa1:
Hi Ajrolfe, it kind of depends on where you live. Here in Australia I would pay a visit to Rob at Old timer engines and pick up a second hand replacement for about $50. In the USA you should probably contact Gary at Diesel Electric Services, he might be able to point you to a replacement, he would certainly be able to provide a suitable generator head and any other spares you need.

New flywheels can be purchased from DEV Precision in India but I suspect the delivery costs might be exorbitant and the quality questionable.

Bob

BruceM:
I don't think anyone in Rajkot or India is casting SOM flywheels.

I would study the oversized hole problem carefully.  How true is it? Steel or brass shim stock of any thickness is available, if you can get a decent fit with a hand cut and fitted sleeve, I'd think about Weldbonding the sleeve in the wheel.  I'd do the fitting first with a piece of 2" shaft- I got one pretty cheap on Amazon and use it for flywheel balancing per 38ac's method.  Check flywheel runout on the crankshaft with the shim stock before Weldbonding it to the wheel alone.  Likewise I would think about brazing the hole, and hand fitting and rebrazing to get rid of runout, both lateral and vertical.

Lots of work and way easier to grab a replacement if available. 

Best Wishes,
Bruce

38ac:
Unfortunately to my knowledge there is no cheap and easy workaround for a worn flywheel bore. The heavy flywheels are much worse with this issue than the light ones.  The Amish fixed them by installing a taoer lock or QD bushing which requires a trip to a well equipped machine shop.

Jordan:

--- Quote from: ajrolfe on June 27, 2019, 11:39:29 PM ---i also need a 3kw generator to go with it.

--- End quote ---

I thought so too, until someone pointed out that I could use a larger output generator (which might be easier to find).
It will produce as much kW as the engine can cope with supplying, then no more.
I hope that's right, because I got an 8 HP alternator.

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