10 ml Statorade ferrofluid, magnetic coolant

The original statorade from ebikes.ca is used, together with a syringe.

The ferrofluid ensures a better transfer of heat to the motor housing and thus the heat can be better dissipated. You can find more information here

The idea behind Statorade is brilliant and simple. A direct drive hub motor generates heat internally at the stator, but this heat has no easy way to escape because it is surrounded by trapped air. With statorade, only a tiny amount of fluid is required to have low resistance. Nanomagnetic particles suspended in a low-viscosity oil concentrate this fluid in the magnetic air gap of the motor. This is exactly where heat must be transferred by fluid convection between the motor stator and the motor housing, where the heat can then be easily dissipated to the environment via the air flow

This offer is not valid for the 100 ml bottle in the picture, but for 10 ml.

Step 1: Loosen the screws on the side cover

Step 2: Mark the position – preferably with a pencil. The side covers are aligned at the factory.

Step 3: Loosen the circlip

Step 4: Fasten the brake disk and lift the cover with a puller. Alternatively, 2 tire levers can also be used – simply thread them into the side of the cover.

Step 5: The side covers should be sealed with a heat-resistant sealant so that the liquid cannot escape even at higher speeds.

Step 6: Fill the statorade – the magnets pull the liquid to the right place.

Step 7: Align the cover with the marking, apply sealant and screw back on (5-6 Nm). Ensure that the opposing screws are tightened evenly from all sides. Then refit the circlip.