Frame and Seat Frame
The upper seat frame sits on a lower frame which is height adustable. Both are welded 1.5mm aluminium. The upper frame slides forward and back to accomodate leg length. It also allows the whole seat to be quickly removed to access the engine. The design supports a seat transport much like Royce Creasey's design to allow for a 2 up configuration if required.
As shown the bike weighs 155kg