Here's some info from copies of Harley-Davidson sales brochures:
Originally Posted by silentgreyfello
"Tires and Wheels. 2-1/4 inch G & J detachable motor cycle tires are used, and the wheels are built up with steel rims and extra heavy motor cycle spokes."
"The wheels are standard 28-inch, 1907 type with double clincher steel rims. They take 2-1/2 inch G & J or Goodrich detachable motorcycle tires. The spokes are extra heavy, making the best possible wheel equipment for the purpose."
"Wheels - The wheels are built up with single or double clinch steel rims, extra heavy spokes, and with Thor, New Departure, or Morrow hubs.
Tires - 28 x 2-1/2 inch tires are used exclusively, and the choice of Empire single clinch wrapped tread, Pennsylvania or Goodrich single clinch moulded, or G & J double clinch flat tread is offered."
"Our wheels are the most carefully constructed throughout, having extra heavy spokes and steel rims of either the single or double clincher type"
That's just info from one manufacturer. It would be very interesting to go though early Cycle & Auto Trade Journal ads and concentrate on the single vs double clincher rims.
Sounds like a good winter project.
Rick Morsher, aka Earl