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Old 02-09-2011, 04:28 AM
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Lil Giants Lil Giants is offline
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Default Re: my first semi build (dump)

So you're gonna add a gear reduction unit between the motor & trans?

I think it's 50rpm gh motors that ppl are using for their screwdrives. The kit motor is a Johnson 15000rpm. I forget how many teeth are that 1st lower gear, is it 36? With an 8 tooth pinion that would be 4.5 to 1 or 3333rpm on that top shaft. That's pretty fast!

Perhaps an additional planetary or spur gear reduction on the back of the trans & in combo with a reduction on the front of trans with a slower (higher winding) motor will give the necessary slow speed & torque you'll require for the screw drive and slow your trk down to a more desireable scale speed?

Or is that "more on that later as all the work is not done on that yet." part yet to come?
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