(U.S.Pat. No. 3,481,223)
“It’s a marvelous device, simple and well made. All the parts fit. And it has won over our strong initial skepticism.”
Cycle World Magazine, February, 1972
The Shifter Switch was a “speed goodie” for Motocross bikes.
It worked by coupling the ignition to the transmission, allowing clutchless shifting, while holding the throttle wide open.
![](https://i0.wp.com/blog.dougfraser.com/wp-content/uploads/2020/08/shsw_brochure.gif?resize=580%2C748&ssl=1)
![](https://i0.wp.com/blog.dougfraser.com/wp-content/uploads/2020/08/shsw_decal.gif?resize=370%2C108&ssl=1)
![](https://i0.wp.com/blog.dougfraser.com/wp-content/uploads/2020/08/ShifterSwitchAd.jpg?resize=271%2C443&ssl=1)
Cycle World liked it. Here is their article: