I got hold of a F2R roadbook and designed my own basically copying what they had done. I'd say they are pretty simple really and spare parts for it would be pretty easy to carry. They run with a couple of one way clutches which are easy enough to slip on and off.
My query is how different are the rolls? Would a roll that was used to the oz safari and then dakar and all the other events be that similar? Or is there in reality a specific standard that is used?
This thread is brilliant as it has so many people with ideas and the will to design and try stuff