Ball Bearings on front wheels acts as metal bushings?

[akemag]

I´ve noticed that ballraces sometimes doesent seem to work as they spin around the axel rather than just the bearing itself. Especially on the front wheels as it seems.

Have anyone else noticed this?

 

[Mad Ax]

Do you use genuine Tamiya ball-races or aftermarket ones?  That could be your answer.

This sort of thing happens anyway - plastic mouldings can't be made to

the same tolerances as CNC-machined billet components, so there will be

cases where the bearings are a loose fit in the plastic housing. 

That's one of the drawbacks of using cost-effective plastic mouldings

instead of all-metal components.

A possible solution is to use some glue on the outer edge of the bearing, although it would make bearing changes difficult.

Also note that often the inner race isn't a good with the the axle that

passes through it, so sometimes even when the outside fits properly

there is plenty of play in the axle.

In fact there is so much play in any off-the-shelf RC model that it

makes me wonder why people go to so much lengths to get their cars

setup perfectly []

[billg4]

put some ca on the shaft, let dry then press the bearing on, if need be stack some bushings and crank into place with the axle nut.

It'll be able to be removed, and will now spin internally instead of on the axle

[akemag]

I maily use aftermarket ones. I ordered some from my somewhat local supplier just when i came back to the hobby. One batch was genuine Tamiya ones in package, but all after that was in the same tube that i get when i buy from Walawala. But i paid full Tamiya price for them. Im sure they order from internet and sell them at full price at home.

I´ll try you tip billg4 ad see how it goes.

[DJTheo]

On which model? Had you used non-ballbearings before? If yes, the casings could be worn a bit and thus out of tolerances, when installing ball bearings from the start never had such a problem on any Tamiya kit...

Cheers

[akemag]

The sliding is allways on the axel, and not in the rim. I noticed this first on my LB that had bearings from the start. One can see that there is some wear (very, very little) on the axel where the bearings are.

This isnt a big problem of cource, but first i wondered if my bearings were a bit to big for the axel.

When driving, the weight on the axel and bearing might make it work better compared to just spinning the wheel freely.

[DJTheo]

This is really weird as axles don't really wear significantly out. Also doubt it would be a bigger ball bearing as they have usually metric sizes and next size would be one mm which would wobble alot.

Cheers

[Gruntfuggly]

Hehe - I've got some Hornet axles that have obviously never had bearings on them in their life - I'd say they've lost about 1mm in diameter where the bushings have rubbed - makes the handling very floppy...