Scorpion Competition HK-2221 replacement Shaft 3.5mm

Scorpion Competition HK-2221 replacement Shaft 3.5mm

The Scorpion HK-2221 motors are built with 4mm hardened steel shafts
that will last through countless hours of flying fun, but occasionally,
on a "Less than Perfect" landing, you may bend or break one. For these
occasions, we offer factory replacement shafts for all the HK-22mm
Scorpion Motors.

This shaft kit is for the HK-2221 series motors
that used in newer T-450 Heli. The shaft measures 4mm in diameter, and
is 58.7mm in long. The pinion end of this shaft is ground down to 3.5
mm. The shafts can be cut shorter with a Dremel tool and a cut-off wheel
if necessary to fit other motors.

Note: The shafts in the
Scorpion motors are a slight press fit into the aluminum front housing.
The shafts will not just slide out when the setscrews are removed. They
need to be pressed out in a bearing press, or in a drill press, with the
front housing of the motor supported in a block of wood to prevent
warping the front housing