The silence is deafening... O.K, if, perish the thought, you had to replace Morgan suspension with anything why assume that clunky wishbones are the only way forward? When the obvious alternative is the Mc Pherson strut. The geometry/ unsprung weight is as near to Morgan as your going to get and purists could argue that it was a rational historical development of Morgan’s design, which it is.
The conversion ought to be relatively simple. The suspension sub frame stays more or less as is except that the bottom tube gets cut off near the chassis and the inboard joint for the radius arm welded in. The top tube probably needs an additional diagonal brace to give it more stiffness. The diagonal stay bar for the bottom radius arm bolts onto the chassis wherever. Snag is its not really a DIY conversion because I doubt whether there is an off the peg strut that would be exactly right for the job. However there should be something fairly close that a manufacturer might be persuaded to adapt. What’s needed is a small beefy strut with a solid round bar welded on the bottom, which would fit into an existing Morgan stub axel, minus the bush tube. Probably secured with a wedged cotter pin .The bottom ball joint just screws into the end of this.
Its tried and tested so you know it’s going to work and the critical angles can be easily tweaked experimentally by varying the length of the radius arm and stay bar to find what works best for the car. And it’s even got a grease nipple on the lower ball joint so we still have something to do. Just a shame it’s not more exotic and peculiar.
