[DeTomaso] Adjustable upper rear A-arms

[Kirby Schrader]

Oh, OK!
:-)

> On Dec 3, 2015, at 18:05, Larry - Ohio Time <Larry at ohiotimecorp.com> wrote:
> 
> 
> 
> << are bad?>>
> 
> To the bone...
> 
> 
> Larry (very bad) - Cleveland
> 
> 
> 
> -----Original Message-----
> From: DeTomaso [mailto:detomaso-bounces at poca.com] On Behalf Of Kirby
> Schrader
> Sent: Thursday, December 03, 2015 6:56 PM
> To: David Nunn
> Cc: Mike Drew; detomaso at poca.com; Ken Green
> Subject: Re: [DeTomaso] Adjustable upper rear A-arms
> 
> So three cars I'm associated with are bad?
> 
> ????
> 
> 
>> On Dec 3, 2015, at 17:44, David Nunn <dnunn at telus.net> wrote:
>> 
>> Ken wrote: "I have a vague recollection that some of the modified upper
> rear
>> control arms included adjustment to reduce possible binding in the rear
>> suspension because the upper ball joint may not exactly line up with he
> top
>> of the carrier?  It seems like a control arm with adjustable frame ends
>> could be adjusted to align the ball joint with the carrier?"
>> 
>> About 20 years ago, Ted Mitchell and Dennis Quella had a lively
> discussion,
>> via the POCA newsletter, about adjustable rear upper control arms. If I
>> remember correctly, it all began when Ted wrote that adjustable rear upper
>> control arms, that replace the ball joint with a rod end (AKA: Heim
> joint),
>> were a poor design because it placed the rod end in single shear. Dennis
>> took obvious offense to Ted's remark which Ted defended aggressively! He
>> (Ted) went on to write, the proper way to make an adjustable upper rear
>> control arm was to replace the chassis mount bushings with adjustable,
>> Teflon lined rod ends and leave the ball joint alone. Such a design places
>> the rod ends in double shear, which is correct from an engineering
>> standpoint. Such a design also removes any bind from the rear suspension
> by
>> allowing the ball joint to be perfectly aligned with the tapered hole in
> the
>> upright. This is accomplished by lengthening and/or shortening the rod
> ends.
>> The entire control arm can also be moved forward or backward by
>> adding/removing the shims that position the rod ends in the chassis
> mounts.
>> 
>> 
>> 
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