[Supras] Hubcentrics??

[Walker, Brian (Rich. Dist)]

I'm not sure that they are using hubcentrics but those wheels have a big
budget behind them and the spindles are probably checked over/replaced
each day (think how quickly they're torquing things and 3900 lb. makes
brakes glow a lot)Their wheels may be bored appropriately to begin with
like OEM wheels, not using an adaptor like aftermarket wheels.

My reason for questioning is that it would have to add additional
strength, especially in racing apps where heat and forces can be much
higher. I agree the 60 deg. tapers would be stronger than some other
styles but if there's a 1/4-3/16" gap between the hub and bore of the
wheel, wouldn't it be much stronger to place a support their as well?

-----Original Message-----
From: Bob [mailto:bob at hairballcreations.com] 
Sent: Tuesday, May 06, 2008 9:22 PM
To: 'Jeff Mohler'; 'Dan Gyoba'
Cc: Supras at supras.com; Walker, Brian (Rich. Dist)
Subject: RE: [Supras] Hubcentrics??

Ok, I'll bite...

How much force does it take to shear 5 studs off?

I assume it is possible but I have never seen it happen...

I find it hard to believe that Nascar is using hub centric rims, maybe
they are?

But I am sure someone has left the pits with 4 lugs and you don't see
rims coming off every day.

Bob
-----Original Message-----
From: supras-bounces at supras.com [mailto:supras-bounces at supras.com] On
Behalf Of Jeff Mohler
Sent: Tuesday, May 06, 2008 6:38 PM
To: Dan Gyoba
Cc: Supras at supras.com; Walker,Brian RRich. Dist
Subject: Re: [Supras] Hubcentrics??

"friction will transfer the load to the hubs."
---

Within WHAT reasonable limit?


That friction can be overcome..it is not a reliable engineering tool in
such critical operation.


Studs suck for sheer forces.

On Tue, May 6, 2008 at 2:48 PM, Dan Gyoba
<dgyoba at abstractconsulting.com>
wrote:
> On 5 May 2008 at 9:34, Walker, Brian (Rich. Dist) wrote:
>
>> I have a question about these, my current wheels don't have them (the

>> fronts of one set do, none of the others) Now, thinking about wheels,

>> the lugs are really there to hold the wheels onto the hub, not to 
>> take all of the load from the weight of the car, seems the hub itself

>> would be intended for this. That being said, it seems important to 
>> have hubcentric rings that correctly fit the spindle/hub diameter to 
>> there is little clearance between the two. Does anyone know if where 
>> to find these? Are they really necessary or am I looking at this
wrong?
>
> They're a good idea, and SHOULD be installed, however, if you have 
> acorn
lugs, the lug nuts
> will center the rim for you, and friction will transfer the load to 
> the
hubs.
>
> I got the proper centering rings with my aftermarket wheels, and I 
> will
use them.
>
> Dan Gyoba
> '89 NA 463,205 kms, Turbo swap COMPLETE 
> http://www.abstractconsulting.com/~dan
>
>
> _______________________________________________
> Supras mailing list
> Supras at supras.com
> http://supras.com/mailman/listinfo/supras_supras.com
>

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