Wes : got black...and got pink too!!!Ha!
Rob' : the brass battery tray is around 114g. Roughly 95x71 (mm).
Towards the big bore , I screwed the rear shock tower between the gearbox and the rear brace.It's better than screwed at tha back (like on pics) Now I can add this 2mm shim and add another 3mm shim at the bottom of the shock.I like to drive with the rear shock perpendicular to the chassis (independently of anti squat)
Do any of you design with solidworks?Or good'old paper and pencils?