Hippie's GTP Project

[lincpimp]

Dang, the 70mm motors sell for under $125... You can't go wrong there.

I would like the 1200kv model to run 10s on, maybe with a pair of 5s rhino lipos... That would be a cheap setup, and pair it with lutach's 10s esc... Under $500 bucks for a hv car system!!!

[rchippie]

I just had my friend dave order me a OFNA ultra GTP . I will be using the medusa 70mm 2300 kv motor on 4s. What size pinion would be good. Im came up with this using a 13t pinion .


Differential Ratio: 3.142857142857143
Transmission Ratio: 1
Other Ratio: 1
Spur Tooth Count: 49
Pinion Tooth Count: 13
Total Voltage: 14.8
Motor KV: 2300
Tire Diameter (inches): 4.5
Tire Ballooning (inches): 0
Motor Current Draw: 0
Motor coil Ω: 0
Spur/Pinion Ratio: 3.77 : 1
Total Ratio: 11.84615 : 1
Tire Circumference (inches): 14.14 inches (359.08 mm)
Total Motor Speed: 34040 RPM
Vehicle Speed: 38.47 mph (61.79 km/h)
Estimated Adjusted Speed: 37 mph (59 km/h) - 5% loss
Effective KV Value: 2300
KT constant: 0.59 oz-in/A
Motor Torque: Amperage not specified...
Final Torque: Amperage not specified...
Final Power: Amperage not specified...