That is very interesting, Graham. It agrees with theories posed by others on the
list. It is certainly different that the statement in the Repair Operation
Manual published by BL Cars Limited.
Vic Whitmore
Graham Stretch wrote:
>
> Hi All
> I know I am late in on this one but I have the Herald 1200,1250, (with 1360
> update pages) Vittesse 6 and Spitfire workshop manual (black ring binder
> from Standard Triumph) Which states "Adjustment of camber and castor angle
> is accomplished by altering the number of shims assembled between the
> chassis and the lower inner fulcrum brackets."
> Short snip about jacking the car up.
> Castor angles
> To decrease, add shims to the front bracket or remove shims from the rear.
> To increase, reverse the procedure.
>
> Camber angles
> To decrease, add an equal number of shims to both brackets.
> To increase, reverse the procedure."
>
> I managed to get my Herald 1360 estate from 2 deg positive camber (suited to
> crossply tyres) to 1.5 deg neg camber (suited to radial tyres), I wanted 2
> deg neg but ran out of bolt length! That car handled like it was on rails!
> And yes there were odd numbers of shims in the packs but the camber
> (modified), castor, king pin inclination and tracking front and rear were
> bang on the book specs, and the wear on the trunnions reduced when I got to
> the correct specs.
>
> Graham.
>
> ----- Original Message -----
> From: "Vic Whitmore" <vicwhit@home.com>
> To: "Nolan Penney" <npenney@erols.com>
> Cc: <spitfire-enthusiast@egroups.com>; "Ptegler" <ptegler@gouldfo.com>;
> <triumphs@autox.team.net>; "CARS Spitfires@Autox. Team. Net (E-mail)"
> <spitfires@autox.team.net>; <nass@egroups.com>
> Sent: Friday, October 27, 2000 1:05 AM
> Subject: Re: [spitfire-enthusiast] Re: Door handle seals and # of spacers on
> A-arms
>
> >
> > As the factory workshop manual says, it is only possible to adjust toe-in
> and
> > camber. Castor is fixed. It even says to put equal number of shims on each
> end
> > of the a-arms. I hope I didn't mislead anyone to think I would recommend
> playing
> > with uneven shims.
> >
> > Vic Whitmore
> > 76 Spitfire
> > Thornhill, Ontario
> >
> > Nolan Penney wrote:
> > >
> > > I'd be *very* cautious about trying to tweak caster by using uneven
> numbers of shims
> > > mounting the lower control arm. That's a dandy way to break a trunion.
> The
> > > unparallel arcs that would result in the upper and lower control arms
> travel would
> > > cause bind in the trunion, encouraging the heck out of it to fail.
> That's why
> > > trunions were replaced by ball joints.
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