I bought a Tamtech Ferrari kit and in the kit was a set of adaptors for 12mm hexes so that was rear sorted. On front the bearing diameter is smaller on Buggy Champ than on other Tamtechs it uses 850 bearings so I used a Tamiya Mini rear axle with a spacer on inside, simple then to add a drive pin, hex and bolt up wheel. (just ordered an alu axle to reduce weight as the steel mini axle is heavy.)
In first photo I didnt have the mini axle fitted, tried something else bout couldnt get wheels centered properly.
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