[crazyjr]

I will as soon as i can, All he really did was drill 4 holes into the skid and cut a hole for the diff gear (he used an ofna diff/51 tooth plastic diff gear) there is a slight offset for motor clearance. My current gearing is 19 pinion with the 51 spur and 1/8 buggy diffs (stock)
here is the setup according to Brian G's speed program
6s
Differential Ratio: 3.3076923076923075
Transmission Ratio: 1
Other Ratio: 1
Spur Tooth Count: 51
Pinion Tooth Count: 19
Total Voltage: 22.2
Motor KV: 1183
Tire Diameter (inches): 5.8
Tire Ballooning (inches): 0
Motor Current Draw: 0
Motor coil Ω: 0
Spur/Pinion Ratio: 2.68 : 1
Total Ratio: 8.87854 : 1
Tire Circumference (inches): 18.22 inches (462.82 mm)
Total Motor Speed: 26262.6 RPM
Vehicle Speed: 51.04 mph (81.99 km/h)
Effective KV Value: 1183

and 4s
Differential Ratio: 3.3076923076923075
Transmission Ratio: 1
Other Ratio: 1
Spur Tooth Count: 51
Pinion Tooth Count: 19
Total Voltage: 14.8
Motor KV: 1183
Tire Diameter (inches): 5.8
Tire Ballooning (inches): 0
Motor Current Draw: 0
Motor coil Ω: 0
Spur/Pinion Ratio: 2.68 : 1
Total Ratio: 8.87854 : 1
Tire Circumference (inches): 18.22 inches (462.82 mm)
Total Motor Speed: 17508.4 RPM
Vehicle Speed: 34.03 mph (54.66 km/h)

I know i never run the motor even close to the true potential but it never got hot or faltered. The MGM is giving me some problems, Got to send it back in, but i am running a quark 125 (unmodded) and will see how it runs on 4 and 5s.

5s should be intresting
Differential Ratio: 3.3076923076923075
Transmission Ratio: 1
Other Ratio: 1
Spur Tooth Count: 51
Pinion Tooth Count: 19
Total Voltage: 18.5
Motor KV: 1183
Tire Diameter (inches): 5.8
Tire Ballooning (inches): 0
Motor Current Draw: 0
Motor coil Ω: 0
Spur/Pinion Ratio: 2.68 : 1
Total Ratio: 8.87854 : 1
Tire Circumference (inches): 18.22 inches (462.82 mm)
Total Motor Speed: 21885.5 RPM
Vehicle Speed: 42.53 mph (68.32 km/h)

I will get the pics, of the diff setup, as soon as i can