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short track hubs vs cup car hubs why are they different?

 
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LastoftheV8



Joined: 05 Feb 2018
Posts: 125

PostPosted: Sat May 08, 2021 10:04 am    Post subject: short track hubs vs cup car hubs why are they different? Reply with quote

trucks/xfinity/Cup cars have all the lug nuts very close to the axle cylinder in the center of the wheel just like a street vehicle

a lot of short track / saturday night cars (and models/die cast of them) have hubs where it looks like the lug nuts are way out on the outer part of the rim closer to where the tire mounts on the rim

Anybody have a theory or knows why they are different? is it a cost or rule of some sort?
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Mark C.



Joined: 16 Feb 2018
Posts: 172

PostPosted: Sat May 08, 2021 2:11 pm    Post subject: Reply with quote

I can't say definitively, but weren't the "wide five" configurations based on heavy duty truck hubs, that could be bought reasonably by the local short tracker?

As for NASCAR, I'm not sure, but perhaps they were parts specifically designed for NASCAR and adapted by all the teams? The legalization of NASCAR parts would have been pretty specific, whereas the local short tracker would have much less stringent requirements to adhere to (and tighter budgets).
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spooker



Joined: 11 Feb 2018
Posts: 437

PostPosted: Sat May 08, 2021 4:27 pm    Post subject: Reply with quote

The Wide-5 design originated on 1937-39 Ford trucks. Short-track racers in the '50s began using them as their wide rims and larger bolt circle improved overall strength and allowed for wider tire options. They also are a "full-floating" bearing design, so a broken axle doesn't mean a lost wheel.
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Racer14



Joined: 13 Feb 2018
Posts: 282
Location: Rockford, IL

PostPosted: Sun May 09, 2021 1:34 pm    Post subject: Reply with quote

The wide five wheels are several pounds lighter than a conventional race wheels. You have to have specific hubs too but these are aluminum so there is a bit of a weight savings in the sprung weight. It does seem like the cost of wide five parts are more expensive than a conventional wheel/hub setup.
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