Originally Posted by
scracer68
I just purchased a used B44 roller and am installing a Viper VTX10R ESC with a Viper 6.5 turn motor. It has an 81 tooth spur in it and I'm looking for a good starting point with pinion size. I'm thinking 19 tooth, does that soung like a good starting point? Thanks for any help you can offer.
We run 21/81 with an 8.5, so 19 should be pretty close.