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Ian Harrison

Hi All

Here are Stephen’s dyno plotting points. That’s a very generous dyno. No 250 single 2-stroke race engine ever made 37 FtLb of torque at 9,000 rpm. . . . . I’d guess about 15-20% over the top.  Most likely be around 55 Hp at peak and around 29Ft Lb of torque. Anyway, as long as you always use the same dyno you can at least make valid comparisons as you make any improvements:

Best Regards

Ian :-)