I notice the greatest difference between the chassis designs, aside from engine mounting, is the position of the handles.
To me this seems less an idea for the design of the machine, and more a necessary adaptation to compensate for the amount of weigh on those handles.
I still can't get over the water cooling, I mean aside from one experimental creation, i have never seen a water cooled mower, and I struggle to see how he came to the conclusion that this would be successful.
He worked in engines, and small two strokes on cylinder mowers were common, turning the carby seems a reasonable thought process, and he must have realised he needed to go for lighter if he ever wanted to compete with the nice, light, electrics.
