04-24-2015, 10:09 PM
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#59 (permalink)
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Batman Junior
Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 22,534
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Revised tail: ABA tested
Conditions were great late today, so I got out to the test route again.
Short story: 3% improvement @ 90 km/h / 56 mph
(Doing AAA-BBB-AAA where each A or B is a 2-way averaged run. So 18 individual runs. A = Kamm+Tail; B = naked rear end)
Compare that to the 2% change I saw last time.
So the revised tail appears to work better, but overall it's still not a very big difference vs. no rear end work. Don't get me wrong, though -- I'll happily take a 3% boost! I'm just surprised it wasn't more.
I'll post the final details & graphs & standard deviations sometime this weekend.
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