ORIGINAL: ThumbSkull
YS is the best of both worlds IMO. You can get pretty good RPM's with more torque.
In YS land, a 1.40 4-stroke = a 1.20 2-stroke.
When should we expect to see a YS gasser? I have not even heard of a conversion. Of course all of the silicone rubber parts would have to be changed. And/or we need to see cheaper YS engines.
Sincerely, Richard