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snellemin
2 KiloWatt RACER
 
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Posts: 2,496
Join Date: May 2007
Location: Houston
11.06.2009, 01:48 AM

I bought 4 A123 cells from Holmes Hobbies and homeboy ships quick. I was going to get me some G3 Lipos, but the A123's were just a good deal. Anyways, I built the pack really quick and ran 3 packs through the crt.5.

Brian calculator spits out 70mph. It looks more like 65mph. The motor just goes nuts on 11.7 volts and the poor crt doesn't know what hits him. I'll do a vid again once my new foams come in. Motor is around 130F.

Differential Ratio: 3.25
Transmission Ratio: 1
Other Ratio: 1
Spur Tooth Count: 46
Pinion Tooth Count: 17
Total Voltage: 11.73
Motor KV: 6025
Tire Diameter (inches): 3
Tire Ballooning (inches): 0
Motor Current Draw: 45
Motor coil Ω: 0.0044
Spur/Pinion Ratio: 2.71 : 1
Total Ratio: 8.79412 : 1
Tire Circumference (inches): 9.42 inches (239.39 mm)
Total Motor Speed: 69480.3 RPM
Vehicle Speed: 70.51 mph (113.27 km/h)
Effective KV Value: 5923.3
KT constant: 0.22 oz-in/A
Motor Torque: 0.05 ft-lbs
Final Torque: 0.46 ft-lbs
Final Power: 527.85 watts (0.7 HP)






6 KiloWatt A123 Racer
GTP-Pletty Big Maxximum+RX8. GTP-C50-6L Hacker+RX8. CRT.5-Pro4+ZTW esc.
24s2p EVG SX 49.6mph Ebike.
18s4p Raptor 60mph Ebike. 11.5KW
   
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