I was sick of the wheel axles on my 124019 bending. They are only 3mm axles and seem to be made out of spaghetti so bend very easily - especially when running a brushless build.

So I began the quest for something stronger... I eventually came upon the CVDs for the 12428 which have M4 hubs with a 5mm shaft. Sadly they would not fit without modifying the car so I cranked up Tinkercad and came up with this design. The dogbone that is part of the CVD is also too short so you need to swap it with a 124019/144001 CVD dogbone.

The modded wheel mounts parts print nice and easily and are nice and chunky so should at least be as strong as the originals if not stronger. I printed them in polycarbonate cause I can - but they should be good in pretty much anything else.

Parts needed:

12428 CVD: https://bit.ly/2QvcuUH
Upgraded 124019/144001 CVD (for the dogbone part): https://s.click.aliexpress.com/e/_AYJR33
5x8x2 Bearing: https://s.click.aliexpress.com/e/_A485n7
8x12x3.5 Bearing: https://s.click.aliexpress.com/e/_AYRexr
M4 Nyloc screw nuts: https://s.click.aliexpress.com/e/_AdRQql
12428 Hex: https://s.click.aliexpress.com/e/_AOmlsp

Instructions: Drill out the bottom hole on the rear holder with a 2mm drill to ensure the pin will fit through.
Put the 8x12x3.5 bearing on the inside of the holders and the 5x8x2 bearing on the outside.
Swap the dogbone from the 144001/124019 CVD onto the 12428 CVD. Fit the parts to the car!

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