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Old 07-14-2015, 05:10 PM
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phildoggg
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Originally Posted by 0verkill
Nice speed! I'm curious what your "calculated speed" is in order to run 137mph? Using this calculator - http://www.scriptasylum.com/rc_speed/top_speed.html

Differential Ratio: 2.5
Transmission Ratio: 1
Other Ratio: 1
Spur Tooth Count: 36
Pinion Tooth Count: 30
Total Voltage: 12
Motor KV: 6700
Tire Diameter (inches): 2.5
Tire Ballooning (inches): 0
Motor Current Draw: 0
Motor Coil Resistance: 0
Spur/Pinion Ratio: 1.2 : 1
Total Ratio: 3 : 1
Tire Circumference (inches): 7.85 inches (199.49 mm)
Rollout: 2.62:1
Total Motor Speed: 80400 RPM
Vehicle Speed: 199.32 mph (320.18 km/h)
Effective KV Value: 6700
KT constant: 0.2 oz-in/A
Motor Torque: Amperage not specified...
Final Torque: Amperage not specified...
Final Power: Amperage not specified...

that is using 3v/cell..
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