yes, all bigmax have a fan

yes the length of the car over all is 570mm
the chassis it self about 357mm long

difficult was it to make a 168mm long rear center driveshaft




i made it on a CNC lathe (and it's not the easyest way). i tested several material but it always start to hunt because of the total length of 200mm from the raw parts
but i one works




and i think i must make a new motor mount to go less than 17/40
i want to test 14/40 and 15/40 but if i do i can not fix the motor because the place is used by slipper and spurgear