B4 Gearing Help (Mamba Max Pro - 7700kv)

[andylinney]

I recently transplanted a Mamba Max Pro with a 7700kv motor into my B4 and whilst it's ridiculously fast it's getting seriously hot.

I wondered what a good place was to start with the gearing?

Not sure of the spur size but there's a 19t pinion on there just now. It's going to be used for back garden driving and occasional indoor meetings on polished floor / carpet with about 20 metres worth of straight so acceleration is more important than all out top-end.