[DeTomaso] Which axles on which side?

Mike Drew MikeLDrew at aol.com
Fri May 27 15:43:52 EDT 2016


Tomas,

I started this thread and the overwhelming response is that the original setup had the LH threads on the LH side of the car. I don't really want to know why, just wanted to know what was done originally....

Cheers!

Mike

Sent from my iPad

> On May 27, 2016, at 12:35 PM, Tomas Gunnarsson <guson at home.se> wrote:
> 
>   I'm pretty sure it's the other way around. Left side of the car, RH
>   thread.
> 
>   Tomas
>   <-----Ursprungligt Meddelande----->
>       From: Guido deTomaso [guido_detomaso at prodigy.net]
>   Sent: 27/5/2016 8:23:20 PM
>   To: b.hower3400 at yahoo.com;vinh.d.ly at gmail.com;larrys at panteraparts.com
>   Cc: MikeLDrew at aol.com;detomaso at detomasolist.com
>   Subject: Re: [DeTomaso] Which axles on which side?
>   Late to this party.
>   Pretty hard to imagine skidding to a stop and having the left side lug
>   nuts spin off because of angular momentum, the hub stopped but the lugs
>   kept spinning.  Similarly hard to imagine the lightweight Pantera axle
>   nut continuing to spin even if not tightened since it has a friction
>   feature.  Any fastener tightened at all is going to produce enough
>   friction to be impervious to angular momentum / angular velocity
>   changes.
>   The self-tightening phenomenon is somewhat easy to predict where
>   there's a rotating load and a thread.  A bicycle pedal is a good
>   example, if you can visualize the weight of the rider's foot going
>   around a loose thread, visualize the male thread of the pedal shaft
>   "walking" around the female thread of the crank arm, you may be able to
>   predict which side will be self-tightening with a LH thread.
>   Similarly British car knock off caps, if the hubs are put on the wrong
>   side of the car, or the car is towed backwards, good chance the wheels
>   will fall off, hasn't happened to me but I've heard several 1st person
>   accounts.  Again if you look at the weight of the car, visualize it
>   walking around the thread, you can predict that the right side of the
>   car will get the LH thread.  ( Hit the top of the knock off toward the
>   rear of the car to tighten ).  LH threaded lug nuts, still used I
>   believe on heavy-duty trucks, same principle.
>   Other times reverse thread seems to be there only in case of
>   catastrophe: Witness every VW and Porsche I'm aware of, they put a LH
>   thread on the left side front spindle.  Now this has no weight on the
>   thread ... in order for the nut to want to turn, first the outside
>   bearing would have to start spinning on the spindle, then the d-shape
>   washer would have to fail, and the cotter pin or clamping feature would
>   have to fail, ONLY THEN the reverse thread would save the day, until
>   the heat build up snaps the spindle anyway.
>   On the Pantera ... I don't see any path for the weight of the car to
>   walk around the thread of the axle nut ... maybe it's there but I can't
>   see it.  However if under acceleration the flange spline failed, the
>   nuts would tighten if they followed the flange, yes ?  Perhaps this is
>   the only reason for the handed thread in this application.
>   Or so it seems to me, I could be wrong.
>   GD
>   From: B Hower via DeTomaso <detomaso at server.detomasolist.com>
>   To: Vinh Ly <vinh.d.ly at gmail.com>; Larry Stock
>   <larrys at panteraparts.com>
>   Cc: Mike Drew <MikeLDrew at aol.com>; "detomaso at detomasolist.com"
>   <detomaso at detomasolist.com>
>   Sent: Sunday, May 22, 2016 12:44 PM
>   Subject: Re: [DeTomaso] Which axles on which side?
>     You would probably never notice a problem.
>     Bud #3400 ( Drive it like there is no tomorrow -- for there may not
>   be
>     ! )
>       __________________________________________________________________
>     From: Vinh Ly <vinh.d.ly at gmail.com>
>     To: Larry Stock <larrys at panteraparts.com>
>     Cc: Mike Drew <MikeLDrew at aol.com>; detomaso at detomasolist.com
>     Sent: Friday, May 20, 2016 12:56 PM
>     Subject: Re: [DeTomaso] Which axles on which side?
>       Question, what would be the ramifications if the axles were
>     incorrectly
>       installed on the wrong side?
>       Thanks,
>       Vinh Ly
>       #7445
>       On Fri, May 20, 2016 at 1:48 PM, Larry Stock
>       <[1][1]larrys at panteraparts.com> wrote:
>         S= Sinestro or Left (the Sinister hand that holds the sword when
>         dueling
>         with the Romans) that goes on the Left side (drivers side)
>         Mike, you win the prize for getting this one correct
>         Larry
>         On 5/20/16, 10:33 AM, "DeTomaso on behalf of Mike Drew via
>     DeTomaso"
>         <[2][2]detomaso-bounces at server.detomasolist.com on behalf of
>       [3][3]detomaso at server.detomasolist.com> wrote:
>> Hi guys,
>> 
>> I thought I would lead off with he first technical question on the
>     new
>> forum.
>> 
>> The rear axles are marked S and D, for 'left' and 'right'
>       respectively.
>> But that speaks to the thread direction (one of them is reverse
>       thread,
>> left to tighten)
>> 
>> It's my belief that the S or left-tighten axle goes on the left
>   side
>       of
>> the car but I can't remember for sure. Can somebody confirm or
>   deny?
>> 
>> Thanks!
>> 
>> And welcome back!
>> 
>> Mike
>> 
>> Sent from my iPhone
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