Yeah some of the specs I got are pretty absurd. Fortunately statistics are generally based on samples, and samples always tend to have some degree of inaccuracy. I think it would be save to say the 13x7 is an 'outlier'


I was really hoping that by plotting the different data against things like size, weight, and cost would show...something. So far it's confirming that 2 strokes offer the most bang for the buck, however the big YS engines compete fairly well against similar size (displacement) OS 2 strokes.


Thanks for everything so far, it has been helpful including the PM's I've received. This certainly beats cramming for some stupid exam about "how many boys and how many girls like commercial A, B, and C". Yuck.