horizenjob wrote:
Quote:
to avoid the battery powered thing.. you could probably use one of the 12v cordless impact drivers they sell for emergency roadside use and hardwire it to the car.
I've wondered about air tools too, but I think this is a better idea, you already have a battery and with the motor running it will recharge quickly...
I wonder what you use for a source for the oneway bearing or clutch thing. It's the kind of thing they use on a motorcycle kick starter, there simple just a few ball bearings on ramps. I don't know how you would easily adapt one though without machine tools.
They can be sourced as replacement starter ("sprag"-type) clutches for electric-start Taiwanese tykes'-sized quads. I just fixed one for a friend - he rebuilt one of these quads for his grandson, and although the starter ran fine, it wouldn't engage on the crank. We took it apart, and found one of the 3 roller-extension springs was crushed. A quick trip to the dollar store, bought one of those 9-color ballpoint pens, and we had 9 working springs, of perfect tension, to fix it.
Those clutches are nice & sturdy, and I suspect very, very cheap (I took a quick look - lots of Ebay suppliers for around $25-$35). And, once the rotation disengages them, there's no further contact, so no bearings to wear except during actual engagement time.
The matching starter motors are cheap, too (again, Ebay - lots, brand new, for under $22) - it would be seriously easy, I suspect, to rig one of these, with its clutch, to a sprocket on the driveshaft (after all, the starter & clutch are already designed to drive via a chain). The starters don't draw much power, either.
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