[Graham]

Are Class B cars, using Betta and Classic glass fibre and resin moulded bodies, classed as the moulded resin bodies, regarding the motor concession of 20k Scaleauto Tech 1 motors? These Betta and Classic bodies, are certainly no lightweights!!

Started to panic, but see that the later rules have been simplified and allow up to 20.5k rpm, for all Class B cars, instead of 18k rpm for some etc.

Yes your Betta Classic Fibre mouldings are fine, and next year I will not be changing the rules......much (as I been ticked off about that).
So apart from the one months grace after initial posting, I will resist the temptation to change anything after that, for better or worse.