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Old 07-23-2017, 06:46 AM   #51 (permalink)
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I like the upper wheel fairings - this is the first time I have seen this idea:



The claim is 20% faster with the same effort - that is a LOT of gain. The top of a wheel is moving forward at 2X the speed of the vehicle.

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Old 07-23-2017, 09:43 AM   #52 (permalink)
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Quote:
Originally Posted by NeilBlanchard View Post
... The claim is 20% faster with the same effort - that is a LOT of gain. The top of a wheel is moving forward at 2X the speed of the vehicle.
That 20%, though, is dependent on headwinds. Other riders reported only 3%. I like if for the front, where headwinds are most important. But the back, behind my churning legs? Will that have as good an effect as a full wheel cover? Maybe this fairing on the front and a full wheel cover on the back is best?
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See my car's mod & maintenance thread and my electric bicycle's thread for ongoing projects. I will rebuild Black and Green over decades as parts die, until it becomes a different car of roughly the same shape and color. My minimum fuel economy goal is 55 mpg while averaging posted speed limits. I generally top 60 mpg. See also my Honda manual transmission specs thread.

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Old 07-23-2017, 09:51 AM   #53 (permalink)
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Last night I was "ambushed" by a group of motley strangers riding a bizarre mix of ebikes. They took me to their secret lair, "the lab", above a warehouse dockside. Apparently they're the Burlington Electric Bike Collective, and they have a hackerspace where they build all sorts of nonsense. I'll post pictures next time I'm there.
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Old 07-23-2017, 05:01 PM   #54 (permalink)
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The proven set up is to build up the rim cross section in the front with bladed spokes. A solid disc only in the rear. The oval frame tubing is common. Cross wind is an issue for safety. The big effort on a commuter is the body shell around the rider. This is not permitted in most races. I use a shell from the shoulders to just below the knees. That way I can put a foot down when I stop. The shape is like a sailplane or a Vetter challenge machine with a Kamm square back 18" behind the seat. The shell must be securely attached to the frame and not the steering gear.
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Old 07-29-2017, 08:03 PM   #55 (permalink)
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Last week I put up an ad on Craigslist, offering to build these for others. So far I have three customers with money down.
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Old 07-30-2017, 10:05 AM   #56 (permalink)
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Very cool.
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Old 07-31-2017, 10:52 PM   #57 (permalink)
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Are you offering upper wheel fairings or something more?
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Old 08-13-2017, 11:08 AM   #58 (permalink)
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Old 08-15-2017, 02:18 PM   #59 (permalink)
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Did you build that?
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Old 08-15-2017, 02:45 PM   #60 (permalink)
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Craigslist find. Currently inquiring about getting a custom geared hub motor made, and drawing up plans to turn it into a velomobile.

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