Since I am now definitely going with the double wishbone front end, I revised my earlier mockups based on the Bugatti:
I extended the nose forward to provide attachment points for the front suspension arms and coil over shocks.
I now think that an extremely rigid surround space frame chassis like the Lotus 7's is probably not as necessary for a 3 wheeler as it is for a 4 wheeler, and am considering instead using a rigid central "beam" connecting the rear wheel suspension unit to the front suspension unit. The beam would be built out of 1"x 2" rectangular tubing, and have a partial 1/32" steel "skin" to add rigidity.
The basic idea is the same as the chassis for the Lotus Elan:
I now think that an extremely rigid surround space frame chassis like the Lotus 7's is probably not as necessary for a 3 wheeler as it is for a 4 wheeler, and am considering instead using a rigid central "beam" connecting the rear wheel suspension unit to the front suspension unit. The beam would be built out of 1"x 2" rectangular tubing, and have a partial 1/32" steel "skin" to add rigidity.
The basic idea is the same as the chassis for the Lotus Elan:
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