Traxxas Nitro Stampede E-conversion Kit

I decided to convert my 'ol RC Nitro Stampede Truck to electric.

I will miss the sound and smells of Nitro, but the Stampede is absolutely a monster after this e-conversion. I've not seen this truck pop a wheelie while already moving at ~20 MPH.

For the pinion size, I calculated based on my nitro's setup. For example, my Nitro engine was rated 28000 RPM and had a 22T, so calculating based on this ratio...

for 2S:
8.4v * 4000KV = 33600 RPM
( 28000 / 33600 ) * 22T = 18 T

for 3:
11.1v * 4000KV = 44400 RPM
( 28000 / 44400 ) * 22T = 14T

Since I only have 3S batteries, I decided to use the 14T and it has been working great. I still need to measure the temps over a long run, but my quick measurements saw 140F-155F.

Materials:
- Nitro Stampede
- this printed conversion kit
- Turnigy 11.1V 3S 1800mAh battery (Hobby King)
- Kinexsis 1/10 4-Pole 4000Kv ESC/Motor Combo (Tower Hobbies)
- 5Pcs 32DP 5mm 13T 14T 15T 16T 17T Motor Pinion Gear Combo