bmw e30 318i donor

[rmccomiskie]

Originally Posted by Chris Gibbs

...Designing the upright presents an almost unique opportunity to specify the ideal geometry for the application (well unique to us mortals - Ford always do it )

The designer can specify caster, camber, king pin inclination and scrub radius, not something that you can do with a "donor" upright. Usually you need to start by working around the chosen upright's limitations!

I'd like to do the designing myself now but I'm just too busy at the moment, soon though

Thanks for volunteering Chris. Of the 2 drawings you previously posted, one shows the fabricated part straddling the upper mounting ear and the other shows it bolted to the side of the ear. Even though it might mean the fabricated upper ball joint attachment has to be angled somewhat for proper geometry, it seems to me that the straddled approach would be less likely to flex the mounting bolt.

In your design, perhaps you can consider instructions that accomodate different KPI, caster, scrub radius, wheel offset, tire size. Something like a simple geometric drawing that shows where the upper ball joint has to be given all the parameters. Just my 2 cents.

Waits eagerly...