spur gears

[psycho_fling]

hi guys

after some spur gears to make a 250:1 reduction gear box - suitable for hw use

anyone got anything spare or suggestions of places that won't cost the earth?

thanks

[mightymouse]

Technobots do the best value gears - they are also EN28 not the cheap chinese mild steel ecomomy gears you get from HPC or RS.

Trev

[psycho_fling]

thanks Trev

What MOD would people reccommend?

Cheers

[maddox10]

Depends in motor you want to use.

Drill? Speed 900? Small fast running brushless?

[psycho_fling]

bosch 750 for lifter weapon

[maddox10]

250-1 Bosch 750.
Minimum size gear on the motor-axle. Mod1 Z 18. Or Mod 1.5 Z14.

4 stages. Each time stepping up the mod.

Z18-Z72

Mod 1 mod 1.25 mod 1.5 and mod 2

End result is the wopping 2772 Nm stall torque...