Now this is interesting. the fact that this "delta" has such a wide rear end and low COG that it breaks away and slides before it can roll over. Is this a lesson for us all to learn?I hardly think you are comparing like for like ?
So compare your Morgan to this ? Vigilante
In 1993 the first Vigillante prototype appeared and has to currently be the most powerful road 3-wheeler in the world. Powered by a 700 hp Chevy engine this two seater is an enhanced version of the TriVette. Sprinting from 0 - 60mph in just 3 seconds and with a top speed of over 200 mph the Vigillante is quicker on acceleration and braking than a £634,500 (over $1 million) McLaren F1 road car, and comparable in cornering. The car has a maximum theoretical tip-over limit is calculated to be 3.27 lateral "g" and so the car will slide long before it reaches its tip-over limit. The vehicle is made from a light weight aluminium, honeycomb, foam, and composite tub, whilst the body work is a composite of aircraft fibreglass, Kevlar and carbon fibre in an epoxy matrix helping to keep the weight of the Vigillante down to 1,480 pounds.
Now we are talking !
If width is the restriction for us (barriers etc.) then the COG needs to be low? Or, like the Original posting above...the trike needs a degree of tilting.
I like your cargo i-Lean Paul, that may indeed be the middle ground you are looking for.