Pinion Gear Suggestions for T3 Brushless Set Up

[erichevy]

My son has an Associated T3 with the stock 87t gear. We are running a 3300kv brushless motor and 2S lipo. I was looking for recommendations/starting points on what size pinion to use with this set up. The truck is all stock. Thanks in advance.

[erichevy]

I went with an 81t gear and 19t pinion to start. Based on what I found on this site, 81 / 19 X 2.40 (T3 Transmission), I end up with a FDR of around 10.2. With the 3300kv brushless and 2S LiPo, it is plenty fast enough for my 13 year old.

[pumpkinfish]

I use this chart for starting gearing and adjust as needed on track.

http://teamnovak.com/tech_info/view_article/26