1915 Dayton
http://www.caimag.com/forum/showthread.php?6358-1915-Dayton-Motor-Bicycle-Parts-Wanted
Shelby bicycle, Travis motor
From Ed Youngblood's Motohistory:
[ Bruce Linsday selected the Oley meet to debut his one-of-a-kind 1902 Sylvester & Jones, a motorcycle built in East Weymouth, Massachusetts for only the 1902 model year. Only about a dozen S&Js are believed to have been built, and Lindsay constructed his from parts of the only known remaining example, including its engine, seat, wheels handlebars, and pedal crank. The remainder of the machine, including its frame and beautifully polished metal fuel tank, were constructed by Linsday from scratch, based on photographs. Lindsay is seen here attaching battery wires in preparation for starting the motorcycle.
The Sylvester & Jones features an unusual engine design that incorporates two exhaust systems. It has a conventional deDion-type intake-over-exhaust pocket valve cylinder head design, with atmospheric intake valve, like many bikes of its era. However, low on the cylinder are also exhaust ports like seen on early racing engines. Both the valved cylinder head exhaust and the cylinder port exhausts are routed into a muffler that sits directly behind the cylinder (pictured here). ]
