[focusmad]

Hi,have put a 9.5 ocra motor and speedo with lrp5300 lipos in my sons x6 sq just not shore on the gearing i have a 74 and76 spurs the track i race at has a long strainght.In my x6sq i am running a 7.5 with a 76/28 any help will be great
chris and luke