To be easy going we let Minis run anything down to a 17.5 competing with the HW system at Club Meetings (it's astroturf so lots of power just means more traction rolling anyway), but we don't encourage it.

If you want to run cheaply with an ESC/motor combo then put a 540 in and run brushed. The low end spec TC class in NSW is going to be non-boosted 21.5 (at least this was the feeling at the last CC round), and 540s can run with that.

For a club meeting, sure, let people run the HW system, but don't encourage it, we have enough classes as it is. The reason this system wasn't chosen as a spec TC class to begin with is because cogging can be a serious issue if you want to gear the car optimally. So, you'll want to control the gearing too if you want to use it.

What we need for good racing is numbers in classes. Splitting the numbers we have into too many groups diminishes the racing. If you just get everyone to run the 21.5 or Stock formats instead of going a separate way then we all benefit.