![A 1915 Harley Davidson motorcycle on display at the Harley Davidson Museum in Milwaukee Wisconsin Stock Photo - Alamy A 1915 Harley Davidson motorcycle on display at the Harley Davidson Museum in Milwaukee Wisconsin Stock Photo - Alamy](https://c8.alamy.com/comp/BNK9MC/a-1915-harley-davidson-motorcycle-on-display-at-the-harley-davidson-BNK9MC.jpg)
A 1915 Harley Davidson motorcycle on display at the Harley Davidson Museum in Milwaukee Wisconsin Stock Photo - Alamy
Dale's Wheels Through Time - 1915 Roadster - When Harley-Davidson introduced their 3-speed transmission in 1915, they continued to produce a small number of machines that still retained the single speed drive.
![Vintage 1915 Harley Davidson 11F motorcycle at The VMCC Banbury Run. Banbury, Oxfordshire, England Stock Photo - Alamy Vintage 1915 Harley Davidson 11F motorcycle at The VMCC Banbury Run. Banbury, Oxfordshire, England Stock Photo - Alamy](https://c8.alamy.com/comp/GDJ9BP/vintage-1915-harley-davidson-11f-motorcycle-at-the-vmcc-banbury-run-GDJ9BP.jpg)