Will be running a 503002-C1 - 1/10 E4FS/C1 Rubber Tire Spec Electric Touring Car. It's the E4FS Rubber Conversion with (convertable) front 1 way option.

I plan on running it on a large outdoor asphalt track.

Also will have the following setup on the car:

- Mamba Max speed
- Trinity Duo 10.5 BL motor
- Orion 4800 Lipo
- 110T spur 64 pitch
- Internal ratio is 2.0588
- Tires are Jaco greens (Rubberz)

My question is what size of pinion do I need for a 10.5 BL (19T) motor using a 110T 64 pitch spur gear ?

Thanks