What are the ratios for spur and pinion?

[thatcraig]

So if I have a 21t motor and I have a 35t motor, the 21t is faster right? Same thing with the spur and pinion gear?

 

[9x19]

If all you change is the pinion, going to a higher tooth count will make the spur turn faster.

With the same voltage, a 21 turn motor should provide higher RPMs than a 35 turn motor.

 

[Grizz03]

The lower the motor turn count is usually the faster rpm motor. The 21t is faster than the 35t motor

Going lower on the pinion and/or higher on the spur = slower speed
Going higher pinion and/or lower spur = faster speed

 

[thatcraig]

Okay thanks guys, I always get confused when I think about it.

 

[STONER RC]

So if I have a 21t motor and I have a 35t motor, the 21t is faster right? Same thing with the spur and pinion gear?

Whats up bud. Here's a good read and info about gearing...

https://www.rogershobbycenter.com/r...on gears you,with a differential assembly, so

 

[thatcraig]

Hey thanks for that read,.that really helps me get a concept for gears. Merry Christmas

 

[STONER RC]

Hey thanks for that read,.that really helps me get a concept for gears. Merry Christmas

You got it bud anytime. Roger's hobby center. Has alot of good info on everything RC....