Gearing for Stampede with MM & 5700

[generalg]

Any links or setups to help figure out what gearing I should use for my Stampede tranny using a Mamba Max and a 5700 motor? Will be using a ELITE 2S 4800 Lipo to power it. Possibly a 3S if the 2S is not enough craziness for me.

I say tranny because it's not a complete Stampede, just the rear end is pulled from a stampede. :D

[suicideneil]

Thats..... different. This should prove most useful to you:

http://www.scriptasylum.com/rc_speed/_top_speed.html

[generalg]

Well something isn't right at all. lol Here is what I get.

Final Vehicle Speed (?): 17.98 MPH (28.88km/h)

Punched in stampede tranny, with stock tires, mamba 5700 motor, 2S 7.4 4800 lipo, 87 spur with 17 pinion.

[suicideneil]

Differential Ratio: 1
Transmission Ratio: 2.727272727272727
Other Ratio: 1
Spur Tooth Count: 87
Pinion Tooth Count: 17
Total Voltage: 7.4
Motor KV: 5700
Tire Diameter (inches): 4
Tire Ballooning (inches): 0
Motor Current Draw: 0
Motor coil Ω: 0
Spur/Pinion Ratio: 5.12 : 1
Total Ratio: 13.95722 : 1
Tire Circumference (inches): 12.57 inches (319.19mm)
Total Motor Speed: 42180 RPM
Vehicle Speed: 35.96 MPH (57.77km/h)
Effective Speed Rate: 4.86mph/V (7.81kmh/V)
Effective KV Value: 5700


I dont know the diameter of stock tyres, but I guessed at 4" - says 36mph, which sounds about right.