Len,
The swing spring is the fix to the wheel tuck that Triumph came up with for the
MkIV and 1500 models. It consists of a spring mount
that allows the spring to rock from side to side rather than remain fixrd to
the differential.
It works but introduced significant body roll which had to be compensated for
by the addition of a larger swaybar on the front.
For older Spits (Mk1 through 3) the camber compensator was devised by Kas
Kastner to defeat the same problem. It does so without the
by-product of additional body roll.
If you examine your spring mount, you will see the rocker box that allows the
spring to rock back and forth.
Regards,
Joe
Len Lubbers wrote:
>
> Barry and the rest...
>
> Consider me your friend and impress me. What do you mean by "swing spring"?
>I
> have read other references to this unique feature. How unique is it? I
> presume it has something to do with the geometry of wheel travel. Can you
> explain or direct me to a website which shows or discusses the rear
> suspension. It is the same on every model? ( I understand earlier ones had
> more leaves.)
>
> By the way, I have had my rear spring out so I am familiar with what things
> look like under there. I added an additional spring to raise the tired rear
> end (pun intended)
>
> Len Lubbers
> '79 Spitfire
> Ottawa, Ontario
>
> Barry Schwartz wrote and I clipped most of it:
>
> > could be wrong). I would say, bite the bullet and just get a new spring -
> > your really better off. As far as the composite one. . .well, it makes a
> > great FIXED spring. If you were to go that route, then you would no longer
> > have a "swing spring" (just one of those items rather unique to the
> > Spitfire, and a neat conversation pieces that you can impress your friends
> > with :-}). It would then be necessary to add a camber compensator (and Joe
> > would love you for this) to alleviate the undesirable handling
> > characteristics common to this type of suspension design.
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