what pinion to use ???

[Fredrick]

Stock motor 850 kv
front main gear, revco 68t
rear main gear, revco 61t


Which pinion should i use??? 20t ?

Please advice....

[bstock]

23t revco pinion

I have the revco gears... and I asked John at readyheli.com this same question - and this is what he recommend I buy for the stock motor he was selling me.

[Fredrick]

thank you very much dude:)
i will put the 23t pinion on today.