CH-640 Fuselage Hull - Stage One (11 of 206)




Measure 125mm back from the center of the hole in the battery support then measure 85mm left and right from that location.  Drill the two holes on the center line (1
Measure 125mm back from the center of the hole in the battery support then measure 85mm left and right from that location. Drill the two holes on the center line (1" holes) and the two holes that are 85mm left and right. The drawings do not show the size of these two holes so I drilled mine with a #20 drill bit. I think these are just drain holes but am not sure at this time.