Thanks for all the help on this lincpimp. Where do we use the 32 pitch pinions? on Emaxx Trannys?
Quote:
Originally Posted by lincpimp
Revo uses a mod 1 spur gear, so you will need a mod 1 pinion. Pinion size will depend on what batterys you will use. A 12l feigao has a kv of 2048, so 4s lipo or 14 cells would be a decent setup. Using the stock tranny and std tranny gearing, I would suggest and 18 tooth pinion. Then you could vary the spur gear as traxxas makes a 36, 38, and 40 tooth spur. The 18/36 gearing with stock tires will give you about 40 mph. Here is a copy of the speed calc with the numbers I used to find this. I used 4s lipo as the battery, but it is very close to 14 nimh cells voltage-wise.
Differential Ratio: 2.8461538461538462
Transmission Ratio: 2.2941176470588233
Other Ratio: 1
Spur Tooth Count: 36
Pinion Tooth Count: 18
Total Voltage: 14.8
Motor KV: 2048
Tire Diameter (inches): 5.75
Tire Ballooning (inches): 0
Motor Current Draw: 0
Motor coil Ω: 0.0172
Spur/Pinion Ratio: 2 : 1
Total Ratio: 13.05882 : 1
Tire Circumference (inches): 18.06 inches (458.83mm)
Total Motor Speed: 30310.4 RPM
Vehicle Speed: 39.7 MPH (63.78km/h)
Effective Speed Rate: 2.68mph/V (4.31kmh/V)
Effective KV Value: 2048
Motor Torque: Amperage not specified...
Final Torque: Amperage not specified...
|
Threaded Mode
