My car will now have a Mark 2 chassis fitted and I don't know if Morgan altered the front suspension wishbone pick up points on that compared with the Mark 1 but as I pointed out above, since changing to Excelsior Comp H tyres (on the Mark 1 chassis), I see no tuck under on hard cornering and three wheel drifts are perfectly possible, as the front to rear adhesion is very balanced.
In France I live at the top of a small mountain, 2500 feet high with very twisty roads up to it, including a number of hairpin bends. Having had a house there for 14 years, I know every inch of those roads and tend to drive up (or down) them pretty quickly, sight lines dependant. These roads rapidly demonstrated to me, the inadequacy of the Avon sidecar tyres and their tendency to roll/tuck under, resulting in a sudden increase in slip angle and terminal understeer. The M3W does not roll a great deal in cornering anyway, due to its relatively wide track, high front roll axis and low C of G, which is why I question the need for increased negative camber/unequal wishbone effect, with the Excelsior tyres. I am worried about unbalancing the car and ending up with a car which now oversteers at the limit or is less progressive, if I fit a short upper wishbone kit.
Wilson
