Joe if I remember correctly somewhere in this thread you quoted your RPM numbers from your Saito 100 and from what I can remember they were way off of what mine were and what other Saito 100 users were. Are you basing this 75% number on your below average Saito numbers? Because if that the case I think 75% could be resonable. But with a properly sunning Saito 100 I don't believe that number would be nearly that high.

You stated that the YS 110 had 8% more power than the YS 91. Well it was widely known that the YS 91 and the Saito 100 were pretty close in power. Maybe a slight edge to the 91, but not much maybe a couple of percent (especially on the same fuel). So logic would state that the YS 110 would have close to 8% more power than the Saito 100. In all honest I do believe it is more than 8% and I'll even go on record as saying the YS 110 quite handily beats a Saito 120 in power. But 75%? I just don't believe it.

I'm not bashing YS at all. I feel they are the best 4-strokes made. I just feel your experience with your Saito is not representative of what most people have run into.