Gear ratios

[Sumilidon]

Hi all,

I am getting a S1v3 sport to use outdoors and planning to use a 13.5t motor with it. Not looking for anything too fast, just a good place to start.

The chassis has an 81t spur gear, but when I add the motor, I am not sure what size pinion to use. I’m thinking it would be between 21 and 26 but that’s from my old TC days and 2WD buggy’s and outside racing is obviously going to be different.

I have tried reviewing some existing setup sheets but the site seems to have been down for a few days now .