[DeTomaso] Which axles on which side?

Fri May 27 15:35:44 EDT 2016

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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    > 
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  References 
    1. mailto:[8]larrys at panteraparts.com 
    2. mailto:[9]detomaso-bounces at server.detomasolist.com 
    3. mailto:[10]detomaso at server.detomasolist.com 
    4. mailto:[11]DeTomaso at server.detomasolist.com 
    5. [12]http://server.detomasolist.com/mailman/listinfo/detomaso 
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    7. [14]http://server.detomasolist.com/mailman/listinfo/detomaso 
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References 

  1. mailto:larrys at panteraparts.com 
  2. mailto:detomaso-bounces at server.detomasolist.com 
  3. mailto:detomaso at server.detomasolist.com 
  4. mailto:DeTomaso at server.detomasolist.com 
  5. http://server.detomasolist.com/mailman/listinfo/detomaso 
  6. mailto:DeTomaso at server.detomasolist.com 
  7. http://server.detomasolist.com/mailman/listinfo/detomaso 
  8. mailto:larrys at panteraparts.com 
  9. mailto:detomaso-bounces at server.detomasolist.com 
  10. mailto:detomaso at server.detomasolist.com 
  11. mailto:DeTomaso at server.detomasolist.com 
  12. http://server.detomasolist.com/mailman/listinfo/detomaso 
  13. mailto:DeTomaso at server.detomasolist.com 
  14. http://server.detomasolist.com/mailman/listinfo/detomaso 
  15. mailto:DeTomaso at server.detomasolist.com 
  16. http://server.detomasolist.com/mailman/listinfo/detomaso 

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-------------- next part --------------
   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
       >_______________________________________________
       >
       >Detomaso Forum NO LONGER Managed by POCA
       >Posted emails must not exceed 1.5 Megabytes
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       >[4][4]DeTomaso at server.detomasolist.com
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       >
       >To manage your subscription (change email address, unsubscribe,
     etc.)
       use
       >the links above.
       >
       _______________________________________________
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       use the links above.
     References
       1. mailto:[8]larrys at panteraparts.com
       2. mailto:[9]detomaso-bounces at server.detomasolist.com
       3. mailto:[10]detomaso at server.detomasolist.com
       4. mailto:[11]DeTomaso at server.detomasolist.com
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     4. mailto:DeTomaso at server.detomasolist.com
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     8. mailto:larrys at panteraparts.com
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