Thank you for your reply. It is still possible to mount the motor on the front forks and still have some front suspension whereby the bike frame is attached to a link behind the forks and the bike frame goes up and down however the motor attached to the front forks axle and wheel stays as one unit. I have a number of examples which I could photograph for you and send you, some of which would be reproduceable. The problem with mounting the motor (and the Travis is quite heavy) on part of the suspension link is that you have to overcome the inertia after a bump of the motor going upwards. If you increase the tension of the motor (roller) to the tyre you have to increase the front tyre pressure substantially as if you get too much "dent" in the tyre under the roller then the roller is effectively trying to go uphill instead of dragging the tyre forward. Let me know if I can help you with some photos of some examples from my collection.