In an ad for the Dayton spring fork bicycles its states "This fork is a duplicate of the spring fork used so successfully on the Dayton Motorcycle".
Thought I'd share some pictures of a friends Dayton Motorcycle he recently purchased. Its a 1913 in original condition. The leaf spring and fork are the same design as on the bicycles, (see Scott McCaskeys in earlier post) and is covered by the fender. So how does the spring "flex" without damaging the fenders? If you look close you can see where the fender is cut just in front and just behind the fork, and has hinges. How cool is that!
The bike also sports the same Dayton badge as the early bicycles.