Quote:
Originally Posted by J-Mech
I've recently done some studying on these gears.... the JD power equipment also used the same boxes. I don't have a cross reference put together yet, but it would seem the larger gear is still available from Deere. Now, the thing I don't know for sure is if the diameter is the same. Haven't gotten that far..... but I assume that they are the same. I wouldn't hesitate to try one.
The PN for a 30T gear is M93731
PN for a 20T gear (tiller) is M93730
FWIW, going to the tiller box set of gears will speed up the blower by 600 RPM. Now, that's 600 more RPM at the output shaft of the gearbox, not at the auger. Doing so, probably wouldn't hurt a thing, because there is a gear reduction again at the auger chain drive. Probably one a 200 RPM increase at the auger (without knowing the gear ratio on the chain, just an educated guess). The only concern I would have, is the jackshaft where the driveshaft connects to has small needle bearings in it. If I did this conversion, I would likely not run the engine at WOT until I knew that it wouldn't be too fast for that shaft or the bearings. A 600 RPM increase is quite a bit on that shaft..... but I really think it would be fine. I'm sure that someone has done it unknowingly before. Up to you!
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John,
I have used a tiller box on a thrower in a pinch, by using a different sprocket
and drive pulley, but for most people, that is more work than they want to do.
But it will work, I have discussed it here on the forum in years past.
