Off Panhard bar

[H. J. Zivnak]

Hello Bruce,

The easiest way to picture this is to imagine the Watts links attached to
the frame and parallel to the axle, viewed from the rear. The bellcrank is
attached to the centerline of the axle and vertical. Now, roll the chassis.
Because the links are attached to the chassis, the bellcrank will move with
it . The bellcrank is now perpendicular to the angle to which the chassis
has rolled. If you bump the axle, it will move along the line of the
bellcrank and shift laterally. The bump movement is perpendicular to the
links.

If you mount the bellcrank to the chassis, the axle won't shift when the
chassis rolls as the links move with the axle, and bellcrank remains
perpendicular to it.

Regards,

Joe
-----Original Message-----
From: Bruce Plecan <nacelp at bright.net>
To: diy_efi at efi332.eng.ohio-state.edu <diy_efi at efi332.eng.ohio-state.edu>
Date: Saturday, March 13, 1999 6:21 PM
Subject: Re: Off Panhard bar


>
>-----Original Message-----
>From: H. J. Zivnak <bztruck at email.msn.com>
>To: diy_efi at efi332.eng.ohio-state.edu <diy_efi at efi332.eng.ohio-state.edu>
>Date: Saturday, March 13, 1999 8:06 PM
>Subject: Re: Off Panhard bar
>
>
>Big Snip
>>An a arm is not a Watts linkage. A Watts linkage resembles a Panhard bar
>>with a bellcrank in the center. The bellcrank should be attached to the
>>chassis and the two rods attached to either end of the axle. The rods are
>>parallel to the axle in their normal position.
>
>
>Why would it matter if crank on axle or chassis?.  Or just for unsprung
>weight,
>differences.
>Bruce
>