Vaterra Halix stub shaft
thingiverse
This is a drive stub for the Vaterra Halix and I'm sure it can be modified for other Vaterra cars too. V1 was an entire failure (lasted about 5ft of driving) so I am not including it, but V2 is a very strong reinforced copy of the stock shaft. V3 is meant to be stronger than the stock shaft with a slot for a 2mm thick piece of steel or carbon fiber. Drilling of the ball supporting cup does need to be done for V2, I used a 10mm drill bit or equivalent. For both versions you will need to drill out the 2mm hole for the drive pin.
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