Separating ride from roll...?

[AMC Racer]

Sorry if this is a bit off topic, but with the Mumford link, if you put the chassis mounts and axle mounts higher, can you get a roll centre height more typical for a PT car? Should give better ground clearance and maybe require less substantial bracing than a typical watts?

Thanks.

[exwestracer]

Sorry if this is a bit off topic, but with the Mumford link, if you put the chassis mounts and axle mounts higher, can you get a roll centre height more typical for a PT car? Should give better ground clearance and maybe require less substantial bracing than a typical watts?

Thanks.

You can change the R/C height by raising (or lowering) the chassis mounts. This involves taking the included angle out of the drop links. I haven't mapped this out, but I believe the Mumford wants a certain minimum amount of angle in the links. If the links become too close to horizontal, they have to "stretch" to allow any body roll. As I said, I'm not sure where that definite point is.

The mounting can also be reversed (as can a Watts link) to put the pivots on the axle housing. With a Watts, one mounting gives us a R/C height fixed to the chassis, the other gives us a R/C fixed to the ground. With the Mumford, the R/C is still moving with the suspension, but the direction of motion is reversed. With the pivots mounted to the chassis, the R/C drops with suspension compression. With the pivots on the AXLE, the R/C raises with compression.