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Discussion Starter · #23 ·
It looks like the Vetter crew is planning a 400 mile each way, two day fuel economy challenge from Wendover Utah to Grand Junction Colorado and back on 8/28. That will show what the streamliners really get for fuel economy on a long trip. The large amount of distance will swamp out any wishful thinking during the fill ups.
 

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Discussion Starter · #24 ·
9 tanks run through with the tail on my Honda CBR250R are as follows:
66 7/28/15 244.60 2.307 106.02 mpgUS
65 7/22/15 240.40 2.354 102.12
64 7/9/15 240.50 2.345 102.56
63 7/6/15 165.90 1.647 100.73
62 7/2/15 241.50 2.482 97.30
61 6/26/15 245.80 2.394 102.67
60 6/19/15 241.80 2.482 97.42
59 6/16/15 244.00 2.545 95.87
58 6/12/15 246.80 2.575 95.84
 

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Discussion Starter · #25 · (Edited)
I rode in the 40 mph wind gusts of the "Witch Storm" and the side wind performance of the CBR250R with it's Vetter style low, truncated tail is almost unchanged from the stock bike. The wind was primarily from the West so directly perpendicular to the 30 mile highway leg of my commute. The Honda still has the same amount of self correcting where the side force works through the trail in the front end geometry to automatically lean into side winds. The added surface area doesn't really seem to have increased the force from the wind when at highway speed since the vector of the apparent wind is still coming from no more than a 30 degree angle off the nose of the bike. If anything the added mass of the tail has slowed the polar inertia of the roll performance making the bike move less in the shorter duration transient gusts so it is less active under the rider. Like the heavier bike that it now is. Having all of that handy storage on a motorcycle makes it infinitely more useful.
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When Craig Vetter first saw my tail I had the top flipped open where it acts like a table while you are loading. He immediatley said "Now that is how bikes should come, right from the factory". Very useful.
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