TAMIYA M1025 Hummer 43mm Steel Front/Rear CVD Shaft HM1243C by GPM  [HM1243C]

43mm steel CVD shaft technical overview

Precision-engineered 43mm steel front and rear CVD shafts designed for the TAMIYA M1025 Hummer platform, supplied as a 1pr for RC driveline use. This direct-replacement driveshaft is intended to replace standard plastic units where increased metal durability is required during routine hobby operation.

The shaft is specified as 43mm in length and steel in construction, transmitting rotational torque between gearbox outputs and wheel hubs in the front or rear positions on the M1025 chassis. During installation confirm the drive cup fit, check companion hexes and bearings, and verify the shaft rotates freely with correct alignment to avoid premature wear or binding.

For workshop maintenance inspect spline engagement and runout at regular intervals, apply light lubrication to the spline interfaces with an appropriate RC grease, and replace the shaft if straightness or spline fitment degrades. The component is intended to enhance drivetrain reliability without changing motor power characteristics.