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You might already have the necessary tools in your garage. The valve nuts of a bicycle inner tube are the perfect size, and the knurled surface bites into the plastic – without being too aggressive. Thread two of these on the valve stem and jam them together in opposite directions and you have...

Have you tried reaming the hub so it wouldn’t squeeze the bearing out of round? Sorry if I asked before, I skimmed through the previous posts in this thread and couldn’t spot it being mentioned.

You had the problem with a front wheel binding if you tightened the nut before, right? Are you sure the axle crush tube is not missing? The hex pressing against the inner race of the bearing should not cause anything to bind. The part number I mean is 92189. It allows you to sandwich everything...

Buggies on carpet tracks are just touring cars with jumps in my opinion. If carpet is the surface we have, I’d get rid of jumps and run a proper on-road vehicle. Our local off road track is astroturf but there are artificial bumps placed underneath the material so you have to address it with...

The outer bearing races are too flimsy to push the plastic of the B74 knuckle into shape. The ovality was 0.16 mm which is a huge deviation in this context. The previous post shows the major diameter. Below is the minor diameter. I also tried boiling the knuckles with the rear end of a 10 mm...

Was it the inner bearing in the steering knuckle? Mine were slightly oval and harmed the bearings. I reamed them round and the problem is gone now.

Clean that loctite off the axle and nut threads. Use grease instead. You won’t have another nut fall off your wheels. I have stub axles with 5 mm hexes in the front. The axles don’t quite reach all the threads on the nuts. But they stay on just fine. Here’s the logic: there will always be...