Kelv’s KILLER YPVS

Fitting a Yamaha 350 YVPS engine is nothing new – in fact the idea is 30 years old now. Most who read this magazine can remember the Alan Rosser attempt to manufacturer them commercially. It’s been well documented here before and the outcome wasn’t something he or anyone else ever expected. The problem with doing this kind of conversion is it’s pretty complicated to get right. Many engineering obstacles need to be overcome and that is probably why the Rosser idea failed. He had a great deal of teething problems that were never really sorted. Those attempting the conversion now aren’t trying to do it commercially so have more time and less pressure to do the job right.

Divine inspiration

Kelvin Bonarski is no stranger to the world of scooters; in fact his interest goes all the way back to the 1960s. Though his first scooter