I do not understand why LIHV is not permitted? You can allow LIHV and set a maximum voltage like in 1:10th Electric? For 4S that would be fully charged 16,88 Volts...
Motor rule?! Stick to a maximum of 1950kV !

I'm very pleased the majority of the 1:8th pancar racers at our club stick to simple rules:
- Motor: max 1950kV
- Battery: max 4S (never mind the configuration)
- Tires: freedom of choice (no additive, gentlemen's agreement)
- KISS..

@Thomas
If you have the time and opportunity, come and visit our club. We have a nice and very competative field of 1:8th electric pan-car racers.

Kind regards, Freundlichen Grüßen,
Johannes