The Scorpion HKIII-4035 & HKIV-4035 series motors are built with 8mm 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 HKIII-4035, HK-4035 & HKIV-4035 XL series Scorpion Helicopter Motors.
This shaft kit is for the HKIII-4035, HK-4035 & HKIV-4035 XL series motors that used in TDF Heli and measures 8mm in diameter, and is 20mm output shaft. The pinion end of this shaft is ground down to 6mm to allow the user to install 6mm pinion gears. The shaft kit will also fit other brushless motors that require a 6mm shaft of this length. 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.
Custom made for Henseleit TDF use.