single stage gear reduction

[maddox10]

Re: single stage gear reduction

I don't like Z10 gears on a Speed 900.

The Graupner Speed 900 axle is 6mm.

Inside diameter of the teeth is Z*M-(M*2.5)

Amount of Teeth * Module -(module*2.5)

10*1-(1*2.5)=7.5mm

With the 5mm hole, the teeth have a foot of (7.5-5)/2=1.25mm
With the 6mm hole, it's even worse. (7.5-6)/2= 0.75mm

It doesn't get better if you have an original Johnson motor with the 1/4 axle. (7.5-6.35)/2=0.575mm

[Danjr1]

Re: single stage gear reduction

probably will go for the technobots z12 mod1 for the pinion. no drill motor would ever demand 30 amps or over would it? (except in exceptional circumstances)