Trex 700 etc 700 size rc helicopter new 4 balde cnc head system: ( for main shaft diameter 12mm head)

New four-blade straight connecting rod change phase through the head arm , this Structure can reduce the burden of servo, sensitivity adjustable, smooth work than oblique rod, elegant appearance.

 (notice: swashplate and main shaft  is not included, need to use orginal heli swashplate and main shaft)

==========================================
reference installing pic:

E-mail a friend about this item.