B4 Gearing

[DNC]

Hi

What pinion size should I run in my B4 with standard spur and 10.5 brussless??????

[Chequered Flag Racing]

last time I used that combo I was on 27/28 with 72 spur

that was Tekin esc & motor on 2s lipo indoors @ Worksop

[ben]

I would start with a 25 tooth pinion

[NitroArgi]

25 sounds like a good starting point with the stock spur...if it feels too slow try to add some timing to the motor