hubcentric adapter question

[LL - NY]

I think Huw pretty well captured this one.

As for the loss of radial force due to the use of anti-sieze between the
hub/wheel interface, no clue. One would need the coefficients of static
friction between wheel and hub and and wheel/hub with anti-sieze to
determine the radial force loss. Up to a point, you could regain some of
that lost force by tightening the lugs more, (which would also reduce the
cyclic stress loads on the lug bolts by a factor that would allow a rather
surprising increase, what that would do the hub or wheel, I dunno) until of
course the lugs or threads or wheel failed.

LL - NY

On 1/25/07, Huw Powell <audi at humanspeakers.com> wrote:
>
>
> > Hmm, I find this highly interesting. For years now I've been thinking
> > that the aftermarket wheel companies have been selling dangerous
> > products by sending them out the door with plastic hub center
> > adapters. I was under the impression that with stock wheels the hub
> > center was carrying all the radial (vertical) loads and the bolts/
> > studs all the axial loads. Now you say that friction does it all
>
> I was reading an interesting site the other day about nuts and bolts -
> it was very "rock crawler"-specific, but one thing the guy was saying
> was exactly that.  The fastener is there to create friction due to
> pressure betweent hemating surfaces.
>
> > which I can sort of understand but what about the following scenarios:
> >
> > 1. You coat the hub to wheel interface with anti-seize compound.
>
> A question I had, as well.  Though, I think I'd prefer a microscopic
> layer of anti-rust compound to a macroscopic layer of corrosion.
>
> > 2. The wheel is powder coated on the hub mating surface (most are).
>
> I don't see how that would affect it, really.  Unless, I suppose, the
> powder coating was done really badly and was uneven.
>
> > 3. A couple of the lug nuts/bolts get loose.
>
> All bets are off if the car is not assembled correctly.
>
> --
> Huw Powell
>
> http://www.humanspeakers.com/audi
>
> http://www.humanthoughts.org/
>