FLM build thread??

[suicideneil]

Originally Posted by Duster_360

I also keep a few spare nuts around just in case.

Gearing with a stock 66tooth spur, hmmm...

Differential Ratio: 2.8461538461538462
Transmission Ratio: 1.7222222222222223
Other Ratio: 1
Spur Tooth Count: 66
Pinion Tooth Count: 19
Total Voltage: 20.4
Motor KV: 1853
Tire Diameter (inches): 6
Tire Ballooning (inches): 0
Motor Current Draw: 0
Motor coil Ω: 0.0092
Spur/Pinion Ratio: 3.47 : 1
Total Ratio: 17.02699 : 1
Tire Circumference (inches): 18.85 inches (478.78mm)
Total Motor Speed: 37801.2 RPM
Vehicle Speed: 39.63 MPH (63.66km/h)
Effective Speed Rate: 1.94mph/V (3.12kmh/V)
Effective KV Value: 1853


Im guessing you are using stock diffs, rather than hybrids, in which case the 19tooth pinion puts you right at 40mph, with a nice motor motor rpm of 38,000. If it runs a little too warm, just gear down a tooth or two, or use a larger spur (Integy sell nice delrin machined gears in a wider range than the stock traxxas ones).