I was going to ask what some of the stroke figures mean regarding engines but then actually found one that has Suzuki S40 as square [94x94] When all I could find before was a stupid 94x4 and similarly with other makes. I thought this must be ratio or such because several calculator sites have a ratio thing you cannot sideline. Fortunately, as I prepared to write this post, I found a page that stated S40 at 94x94 and then also found an old English site that has no parifinalia and is straight forward. Sorry to bother anybody with a non enquiry. Now all I really need is a true KW for each motorcycle. The japs seem to want to keep them secret. I am looking at S40 for purchase and trying to get by the usual gab about it being a learner bike. I am getting on and have back/leg issues and, as a 650 used to be a reasonable bike [back in the days when you didn't buy only to pose] I am looking at low height S40 [+gelseat] or BMW c600 stepthrough. All I find on the forums are kids [and older kids] saying 650 is a starter bike and no good for a distance run and definetely no real discussion on power [horses and NMs] other than a much heavier Yamaha or Kwaka 650 is so much more powerful. Anyway I have solved my bore/stroke problem. I guess the power one will take a little longer unless someone has access to HPs/torques for all bikes? Why did I have to mention strokes. I have drop down add in bottom [pun] right of my screen that nearly gave me a stroke and probably deserves a stroke. In case noone else has the drop down it is some bird washing a car with busted denim shorts on she borrowed from her big sister. i'm off to get some lunch.