Friend of mine and his brother built a Honda 750 powered Street Kneeler. Fast and scary. I was monkey ONCE! Both of them were cops, but got a giant ticket
for speeding through a pass in Los Angeles! Hah! There was a Swiss kneeler guy (name escapes me now) who built his own sidehack engines. Was a successful
racer, until his pal and monkey fell off and was killed. Not like skateboarding. I was the Norton 750 specialist in LA for awhile. Built engines for Wasp framed
motocross sidehacks.Crazy guys rode those!