Quote:
Originally posted by Joe Johnson
I am really surprised at how well the drill transmissions must tolerate overloading conditions.
The gearbox that you see above puts something like 3-5 times the input torque into the transmissions than the drill motor hooked directly.
It is very surprising that these drills are designed with that much safety margin.
As long as the safety factor stays above 1 that is all you need.
Joe J.
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Just wait till you see what Dennis and I created! Drill motor/Atwood motor combo running into a comman shaft. We pulled the first stage gears out and made an adapter to drive via the gear dowels. I am concerned we might toast the tranny if we get slammed in the oppisite direction when under full throttle, but I don't think the electric motors will deliver a sudden shock to the tranny the way I do in my 3500 lb.Camaro dropping the hammer at 8000 rpm and dead hooking! Broke a few trannys in my day. Since gone to a turbo 400 with a trans brake and a 5000 rpm stall converter.
In a preliminary drive test, we are making a bundle of torque in low range, and are almost uncontrollable in high. I agree that these transmissions are suprisingly tough. But driving screws into 25 year old pine puts a little stress on the trans too!
