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Old 04-05-2015, 04:31 PM   #1 (permalink)
Master EcoModder
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Join Date: Feb 2009
Location: Livermore CA
Posts: 341

l&s' Jag - '00 Jaguar S-Type SE
90 day: 25.86 mpg (US)

l&s' Vision - '82 Yamaha Vision XZ550RJ
90 day: 59.92 mpg (US)

L&S' Greenaero Ninja 250 - '99 Kawasaki Ninja EX250F Ninja 250R
90 day: 97.24 mpg (US)

SilverAero Ninja 250 - '04 Kawasaki EX250 Ninja
90 day: 88.24 mpg (US)
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Aero project for a diamond frame road bike

With my interest in vehicle aerodynamics and efficiency I wondered about how effective simple partial streamling would be for conventional diamond frame road bikes. I decided to apply the same approach that I have used with my Silveraero/aerotrunk moto. I made a handlebar windscreen of coroplast over a wire framework and a tailtrunk of coroplast and doorskin ( very thin plywood). The tailbox was a bit of a challenge to finally get mounted rigidly enough so that it stayed in alignment behind the rider. I was finally able to test it last week and found that it worked fairly well. The improvement was most notable as I cruised at higher speeds (15 mph + ) and particularly on a downhill run where I exceeded 34 mph. The only downside was on steep uphill climbs where the added wieght ( 2-3 lbs) was a factor. I rate this project a success and will keep working to refine and improve it. Like my aerotrunk project , the tailbox can carry a lot of stuff without increasing air drag.

The reaction from other bicyclists was mixed; some shaking thiers heads , others suprised. I usually get a wave or a thumbs up from other motorcyclists
but I haven't received that feedback yet from another bicyclist. What do you think?

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The Following 3 Users Say Thank You to low&slow For This Useful Post:
aerohead (04-06-2015), mikeyjd (04-18-2015), sendler (04-17-2015)