My bike revs out too far on the long straights but at the same time, that doesn't equate to much actual top speed.

Neal shared some info on his 21 sprocketing with me for the same track I am at this weekend. (His times are fast so I rate he is a good source for info). Stuck that into a gearing calculator along with the two bikes box ratios to try and come up with some sprocketing for the 28.

The calcs tell me to run a 15/41 combination. Anyone run this sort of gearing or have any input on it.
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If you want a proper 2 stroke get an RGV.