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Hardstyle · 04.28.2009, 07:15 AM

So your setup is something like this now?

Differential Ratio: 2.888888888888889
Transmission Ratio: 1
Other Ratio: 1
Spur Tooth Count: 46
Pinion Tooth Count: 11
Total Voltage: 14.8
Motor KV: 2200
Tire Diameter (inches): 7.5
Tire Ballooning (inches): 0
Motor Current Draw: 0
Motor coil Ω: 0
Spur/Pinion Ratio: 4.18 : 1
Total Ratio: 12.08081 : 1
Tire Circumference (inches): 23.56 inches (598.47 mm)
Total Motor Speed: 32560 RPM
Vehicle Speed: 60.14 mph (96.6 km/h)
Effective KV Value: 2200

That is too much for heavy truck imo, sucks a lot of current with 4s. Dunno really what you should do, since you have bought the 2200kv motor. Your options would be using smaller kv motor, get bigger spur or smaller tires. With pinion you really can't go any smaller 11t is quite small already, maybe you can find something like 9t hardened?
I would try first smaller tires with 9t pinion. Just play with Briang's calculator and aim the speed around 40-45mph. And test it out, watch temps very often. Hope this helps..

	(#140)
Hardstyle RC-Monster Carbon Fiber Offline Posts: 316 Join Date: Nov 2006 Location: Helsinki, Finland	04.28.2009, 07:15 AM So your setup is something like this now? Differential Ratio: 2.888888888888889 Transmission Ratio: 1 Other Ratio: 1 Spur Tooth Count: 46 Pinion Tooth Count: 11 Total Voltage: 14.8 Motor KV: 2200 Tire Diameter (inches): 7.5 Tire Ballooning (inches): 0 Motor Current Draw: 0 Motor coil Ω: 0 Spur/Pinion Ratio: 4.18 : 1 Total Ratio: 12.08081 : 1 Tire Circumference (inches): 23.56 inches (598.47 mm) Total Motor Speed: 32560 RPM Vehicle Speed: 60.14 mph (96.6 km/h) Effective KV Value: 2200 That is too much for heavy truck imo, sucks a lot of current with 4s. Dunno really what you should do, since you have bought the 2200kv motor. Your options would be using smaller kv motor, get bigger spur or smaller tires. With pinion you really can't go any smaller 11t is quite small already, maybe you can find something like 9t hardened? I would try first smaller tires with 9t pinion. Just play with Briang's calculator and aim the speed around 40-45mph. And test it out, watch temps very often. Hope this helps..