On a suggestion from the Web, I was attempting to move the axle over
slightly (1/8 - 1/16") using the Panhard rod to clear a minor tire rub and
discovered that the panhard rod bracket was failed on the chassis side.
I have traction bars - should I get welded or take it off in time for Big
Bear?
Bill Rogers
----------
> From: Warwick Jones <tigers@warwick.powernet.co.uk>
> To: tigers@autox.team.net
> Subject: Re: Fw: locating rear susp
> Date: Monday, June 01, 1998 5:55 AM
>
> In what way do you recommend reinforcing the leaf springs?
>
> I already have traction bars, and have on the advice of my mechanic
removed
> the Panhard rod, which I agree has too higher mounting point on the
chassis
> (it is interesting to note in Marcus Chambers' book 'Works Wonders', he
> talks of the limited testing carried out on the Le Mans cars, and that
"the
> Panhard rod location was lowered 3in from what it had been at the Le Mans
> test" during testing at Snetterton prior to the race!)
>
> I believe it is quite common for welds on the chassis mounting point for
the
> Panhard rod to fail (mine did), so my worry is that the lateral forces
that
> were taken up by the Panhard rod will now be transmitted though to the
> chassis through other suspension components (namely the springs and
spring
> hangers) which are designed for vertical loads! (and if these loads can
> break the welds on the rod mounting...?) Although I would concede that
> with a steep angle on the rod from axle to chassis any vertical movement
of
> the axle will create their own lateral loads through the rod and
mountings,
> separate from the cornering loads!
>
> Warwick Jones
> UK
>
> -----Original Message-----
> From: BMcgu22954@aol.com <BMcgu22954@aol.com>
> To: gumby@connectexpress.com <gumby@connectexpress.com>;
> tigers@autox.team.net <tigers@autox.team.net>; alpines@autox.team.net
> <alpines@autox.team.net>
> Date: 01 June 1998 03:56
> Subject: Re: Fw: locating rear susp
>
>
> >What you are describing is a Watts Link.
> >Used on Le Mans Tigers, and numerous other racing applications.
> >Described in Carroll Smiths' book "Tune To Win" in the section having to
do
> >with lateral location.
> >In short, Mr. Smith does not think that the theoretical advantages of
the
> >Watts Link over the Panhard Rod are worth the extra complexity.
> >The problem with the Tiger Panhard Rod is it's just too damn high.
> >The roll center is where the Panhard Rod intersects with the vehicle
> >centerline.
> >If you remove the Panhard Rod and reinforce the leaf springs, the roll
> center
> >is at the centerline of the beam axle and the vehicle centerline.
> >
> >Bruce McGuire
> >
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