[urq] RE : Anyone ever try to add metal to the sills or roof to stiffenthe urq chassis?

[Louis-Alain Richard]

Steven,

Two points:

Adding longitudinal stiffening won't do much to torsionnal stiffness, which
is what you are experiencing when jacking only a corner. Welding the doors
shut will help a lot more. :-)

Secundo, any metallic structure will experience fatigue after a number of
cycles. A car will indeed lose stiffness as it ages : our urQs are not young
to say the least. Maybe the only way to regain original stiffness without
adding a cage would be to seam weld the floorpan and rear bulkhead ? A HUGE
task, but worth it for racing. For a street car, I don't know.

Louis-Alain


> -----Message d'origine-----
> 
> I might have repairs done to the sills and it occurred to me if a little
> extra metal was added maybe the chassis stiffness gained might be worth
> it.   These cars are pretty flimsy by today's standards,  if you jack up a
> corner the doors don't shut well.    Maybe flexibility contributes to
> windshield cracking?
> I'm not interested in adding a cage.