[DeTomaso] Std Lug nut thread? - More to Lugs Than Just the Thread Size
jderyke at aol.com
jderyke at aol.com
Sat Mar 19 17:07:40 EDT 2016
I've also mentioned this in POCA Newsletters over the years, starting back when Mad Dog wanted to use Bassets. Racing wheels and lugnuts use a 45 degree taper while street wheels use a 60 degree taper. The larger angle gives a larger grip area for the race stuff. Mixing and matching street and race parts can often lead to big trouble. Another thing that no one seems to pay attention to is, those pretty acorn lug nuts (logo or not) sometime will NOT torque down on a stock steel wheel used as a spare. The steel wheel center is far thinner than the Campagnolo mag wheel centers so the wheel studs can bottom. Another reason to use open-center lug nuts: so you can see how much thread engagement you have. J DeRyke
-----Original Message-----
From: Jerry Knotts <knottsj at galstar.com>
To: Mike Thomas <mbefthomas at comcast.net>; 'De Tomaso List' <detomaso at poca.com>
Sent: Sat, Mar 19, 2016 10:16 am
Subject: Re: [DeTomaso] Std Lug nut thread? - More to Lugs Than Just the Thread Size
Thanks for the heads up. I am putting the Bassett wheels on the car and
they have a 45 degree head which is why I want to have a new set of lug
nuts after I get the tires mounted on the new wheels.
Thanks again,
jerry
On 3/19/2016 12:03 PM, Mike Thomas wrote:
> I learned what could have been a very expensive lesson the last time I had
> an alignment done on the Pantera: be sure that the lug nuts you buy for the
> car not only have the right thread, but also the right seat for the design
> of your wheel. If the seat of the lug is not designed to match the wheel,
> it may torque, but it won't seat properly and will put stresses on that area
> of the wheel that were not designed for. The lugs I had on 6328 were a
> mismatch seat to the Campy clone wheels, and my alignment guy was heads up
> enough to point it out to me and swap me for the right lugs.
>
> Mike Thomas
> Pres., Panteras Northwest
> Yellow '74 #6328
>
>
>
>
> -----Original Message-----
> From: DeTomaso [mailto:detomaso-bounces at poca.com] On Behalf Of Jerry Knotts
> Sent: Saturday, March 19, 2016 8:38 AM
> To: De Tomaso List <detomaso at poca.com>
> Subject: [DeTomaso] Std Lug nut thread?
>
> Have a 71 with what seem to be standard studs in the wheel plates, are they
> 12.5x something or 1/2x20? Or something different?
>
> Thanks in advance,
> jerry knotts
>
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-------------- next part --------------
I've also mentioned this in POCA Newsletters over the years, starting
back when Mad Dog wanted to use Bassets. Racing wheels and lugnuts use
a 45 degree taper while street wheels use a 60 degree taper. The larger
angle gives a larger grip area for the race stuff. Mixing and matching
street and race parts can often lead to big trouble. Another thing that
no one seems to pay attention to is, those pretty acorn lug nuts (logo
or not) sometime will NOT torque down on a stock steel wheel used as a
spare. The steel wheel center is far thinner than the Campagnolo mag
wheel centers so the wheel studs can bottom. Another reason to use
open-center lug nuts: so you can see how much thread engagement you
have. J DeRyke
-----Original Message-----
From: Jerry Knotts <knottsj at galstar.com>
To: Mike Thomas <mbefthomas at comcast.net>; 'De Tomaso List'
<detomaso at poca.com>
Sent: Sat, Mar 19, 2016 10:16 am
Subject: Re: [DeTomaso] Std Lug nut thread? - More to Lugs Than Just
the Thread Size
Thanks for the heads up. I am putting the Bassett wheels on the car and
they have a 45 degree head which is why I want to have a new set of lug
nuts after I get the tires mounted on the new wheels.
Thanks again,
jerry
On 3/19/2016 12:03 PM, Mike Thomas wrote:
> I learned what could have been a very expensive lesson the last time
I had
> an alignment done on the Pantera: be sure that the lug nuts you buy
for the
> car not only have the right thread, but also the right seat for the
design
> of your wheel. If the seat of the lug is not designed to match the
wheel,
> it may torque, but it won't seat properly and will put stresses on
that area
> of the wheel that were not designed for. The lugs I had on 6328 were
a
> mismatch seat to the Campy clone wheels, and my alignment guy was
heads up
> enough to point it out to me and swap me for the right lugs.
>
> Mike Thomas
> Pres., Panteras Northwest
> Yellow '74 #6328
>
>
>
>
> -----Original Message-----
> From: DeTomaso [[1]mailto:detomaso-bounces at poca.com] On Behalf Of
Jerry Knotts
> Sent: Saturday, March 19, 2016 8:38 AM
> To: De Tomaso List <[2]detomaso at poca.com>
> Subject: [DeTomaso] Std Lug nut thread?
>
> Have a 71 with what seem to be standard studs in the wheel plates,
are they
> 12.5x something or 1/2x20? Or something different?
>
> Thanks in advance,
> jerry knotts
>
> _______________________________________________
>
> Detomaso Forum Managed by POCA
> Posted emails must not exceed 1.5 Megabytes DeTomaso mailing list
> [3]DeTomaso at poca.com
[4]http://poca.com/mailman/listinfo/detomaso_poca.com
>
> To manage your subscription (change email address, unsubscribe, etc.)
use
> the links above.
>
>
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