Hello -
I was watching "Pickers" on the History Channel when they came across a rusty "Simplex" motorcycle frame. These motorcycles were *made* for MPG, so I looked them up :
HowStuffWorks "1956 Simplex Automatic"
Quote:
The first Simplex motorcycle was introduced in 1935, and as the name implied, was built with simplicity in mind. Its 125-cc engine powered the rear wheel through a direct-drive arrangement, eliminating the complexity and expense of a transmission and clutch.
Later models added more features. The Simplex Automatic motorcycle was fitted with an automatic clutch and variable transmission. Furthermore, its two-stroke engine incorporated a rotary valve that was quite unusual for the period.
Light weight and efficient design combined to return a claimed 100 mpg.
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More URLs :
http://www.servi-cycle.com/history.htm
1935 Model Servi-Cycle
And a YouTube :
CarloSW2