information on kb45 motors?

[sikeston34m]

Originally Posted by aqwut

I think you have a solid (cheap $) setup there man... that should do you really good..... I use a 40mm x 20mm fan, and just zip tie it around the motor... 20/40 gearing comes up to only 36MPH.. for my revo 3.3.. Wouldn't you need 22/36 for 45MPH..?

and that motor is plenty powerful for that revo.. Awesome!

Thank you for your reply.

Here are the values that the speed calculator gave me. It LOOKS correct.........hmmmmm..........

Differential Ratio: 2.8461538461538462
Transmission Ratio: 1.8333333333333332
Other Ratio: 1
Spur Tooth Count: 40
Pinion Tooth Count: 20
Total Voltage: 22.2
Motor KV: 1200
Tire Diameter (inches): 5.75
Tire Ballooning (inches): 0
Motor Current Draw: 0
Motor Coil Resistance: 0
Spur/Pinion Ratio: 2 : 1
Total Ratio: 10.4359 : 1
Tire Circumference (inches): 18.06 inches (458.83 mm)
Rollout: 1.73:1
Total Motor Speed: 26640 RPM
Vehicle Speed: 43.67 mph (70.15 km/h)
Effective KV Value: 1200
KT constant: 1.13 oz-in/A

The difference is probably in the transmission gear ratio.