Originally Posted by
Barry_Hughes
My settings are nothing like those used on a Corally, Toby ran my settings with his GM and was very pleased with the result

Still getting to grips with 21.5 and the racing is so close in lap times, but I am sure with a bit of practice at WLRC I can get it going a bit quicker.
But like the 13.5 the Corally is a totally different motor, and does appear to be quicker due it's construction, hence it not being BRCA legal. The only downside seems to be the construction, lots seem to shed the rotor!!!!
My mistake by GM I thought you meant the Graupner (Black/Silver) motor like the Corally. I expect the GM would be comparable to the D3 as a start point.