Ha Ha, I used to ride one of these to work for years, didn't even hot it up, did I mention I like rotary valves? About 10 HP standard I think.
No actually It was a YB 100 Yamaha, similar lay out rotary valve engine
![Cheesy :D](http://twostrokemotocross.com/forum/Smileys/SoLoSMiLeYS1/cheesy.gif)
. It was a good reliable little commuter.