[DeTomaso] Steering wheel shimmy
bill at incendium.com
bill at incendium.com
Wed Apr 19 17:43:39 EDT 2017
I have 17 " campy clones from Bob Byars, 5 years ago. Been to 150 MPH (maybe not smart) no problem..
CheersBill MooreCalgary
-------- Original message --------From: Thomas Törnblom <thomas at hax.se> Date: 2017-04-19 5:30 PM (GMT-05:00) To: jderyke at aol.com Cc: detomaso at server.detomasolist.com, tbaranek at earthlink.net Subject: Re: [DeTomaso] Steering wheel shimmy
A Swedish owner bought new PE wheels several years ago, I believe they were manufactured by Boyd Coddington. They were quite untrue and I would not have been happy if it were my wheels. Not sure if he got the issue sorted or not.
Thomas
> 19 apr. 2017 kl. 22:10 skrev Jack DeRyke via DeTomaso <detomaso at server.detomasolist.com>:
>
> The small amount of caster possible (-2.5 degrees negative) in a
> Pantera with an all-stock front end can induce shimmy or road wander.
> If this is what's causing the nervousness, its a function of tire
> inflation pressure, width & rubber compliance, road surface and maybe a
> little wear in ball joints and the rack bushing. With around -4 degrees
> negative, nervousness disappears on most cars with big tires. Some may
> call this a 'mask', not a fix, but it often cures the problem. You can
> easily check the whole assembly for 'true' by jacking up one wheel and
> slowly spinning it with a dial indicator barely touching the sidewall,
> or the edge of the tread if its not serrated. Good luck, Tom- J Deryke
> -----Original Message-----
> From: Tom Baranek Garage <tbaranek at earthlink.net>
> To: detomaso <detomaso at server.detomasolist.com>
> Sent: Wed, Apr 19, 2017 11:54 am
> Subject: [DeTomaso] Steering wheel shimmy
> On my 1973 Pantera, I replaced the steering rack washer (with the brass
> one) YEARS ago.
> The tires/wheels do not feel out of balance and the shimmy in the
> steering is more pronounced (when it is there) when I turn the
> wheel/change lanes. Sometimes going straight at highway speeds (and
> above) the steering wheel is often rock solid/smooth.
> I have Pantera East 17" Campy replicas and am sure they are true,
> etc...but I will have them checked. Since the vibration goes away
> completely (sometimes), I'm thinking it is in the bushings or something
> like that???
> Any known/obvious things I should check?
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-------------- next part --------------
I have 17 " campy clones from Bob Byars, 5 years ago. Been to 150 MPH
(maybe not smart) no problem..
Cheers
Bill Moore
Calgary
-------- Original message --------
From: Thomas Toernblom <thomas at hax.se>
Date: 2017-04-19 5:30 PM (GMT-05:00)
To: jderyke at aol.com
Cc: detomaso at server.detomasolist.com, tbaranek at earthlink.net
Subject: Re: [DeTomaso] Steering wheel shimmy
A Swedish owner bought new PE wheels several years ago, I believe they
were manufactured by Boyd Coddington. They were quite untrue and I
would not have been happy if it were my wheels. Not sure if he got the
issue sorted or not.
Thomas
> 19 apr. 2017 kl. 22:10 skrev Jack DeRyke via DeTomaso
<detomaso at server.detomasolist.com>:
>
> The small amount of caster possible (-2.5 degrees negative) in a
> Pantera with an all-stock front end can induce shimmy or road
wander.
> If this is what's causing the nervousness, its a function of tire
> inflation pressure, width & rubber compliance, road surface and
maybe a
> little wear in ball joints and the rack bushing. With around -4
degrees
> negative, nervousness disappears on most cars with big tires. Some
may
> call this a 'mask', not a fix, but it often cures the problem. You
can
> easily check the whole assembly for 'true' by jacking up one wheel
and
> slowly spinning it with a dial indicator barely touching the
sidewall,
> or the edge of the tread if its not serrated. Good luck, Tom- J
Deryke
> -----Original Message-----
> From: Tom Baranek Garage <tbaranek at earthlink.net>
> To: detomaso <detomaso at server.detomasolist.com>
> Sent: Wed, Apr 19, 2017 11:54 am
> Subject: [DeTomaso] Steering wheel shimmy
> On my 1973 Pantera, I replaced the steering rack washer (with the
brass
> one) YEARS ago.
> The tires/wheels do not feel out of balance and the shimmy in the
> steering is more pronounced (when it is there) when I turn the
> wheel/change lanes. Sometimes going straight at highway speeds (and
> above) the steering wheel is often rock solid/smooth.
> I have Pantera East 17" Campy replicas and am sure they are true,
> etc...but I will have them checked. Since the vibration goes away
> completely (sometimes), I'm thinking it is in the bushings or
something
> like that???
> Any known/obvious things I should check?
> _______________________________________________
> Detomaso Email List is not managed by POCA
> Posted emails must not exceed 1.5 Megabytes
> DeTomaso mailing list
> [1]DeTomaso at server.detomasolist.com
> [2]http://server.detomasolist.com/mailman/listinfo/detomaso
> To manage your subscription (change email address, unsubscribe,
etc.)
> use the links above.
> Members who post to this list grant license to the list to forward
any
> message posted here to all past, current, or future members of the
> list. They also grant the list owner permission to maintain an
archive
> or approve the archiving of list messages.
>
> References
>
> 1. mailto:DeTomaso at server.detomasolist.com
> 2. http://server.detomasolist.com/mailman/listinfo/detomaso
>
>
> !DSPAM:58f7c4399022782912367!
> _______________________________________________
>
>
> Detomaso Email List is not managed by POCA
> Posted emails must not exceed 1.5 Megabytes
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use the links above.
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list. They also grant the list owner permission to maintain an archive
or approve the archiving of list messages.
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> !DSPAM:58f7c4399022782912367!
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