If you have a hobby modification, there are a few tips to disassemble rc helicopter, things that need attention:
- prepare a place to disassemble, try not mixed with other stuff
- prepare the suitable screwdriver
- separate screw/bolt according to the group that disassembled
- at the time of installation again, do not tighten the screwdriver too strong, because it can make a bolt/screw is wear out, tighten just enough
if you want to see, this is a video that I disassembly syma S107:
good luck . . . .