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#31
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Ken Kobayashi wrote: > > On 2 Jul 2003 06:31:01 -0700, eldberg@cstone.net (Warren Berger) wrote: > > >> Um, which bike? Maybe you left out a link. > > > >http://www.flybike.com/ > > Hey, that's pretty cool. Looks sort of like a semi-prone bike, though maybe the position isn't all > that different from a road bike. The riding position "is better for you healt". Tom Sherman - Quad Cities USA (Illinois side) |
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#32
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Friends, I thought you might be interested in another of those negative rake bikes. > Wouldn't that make the wheel wobble like the front wheel on a grocery cart? This "grocery cart" has already gone 88 km/h (55 mph) with the canopy off. http://www.eklektus.com/bike/rekord-slike/Dscn0068.jpg http://www.eklektus.com/bike/rekord-slike/115_1526.jpg http://www.eklektus.com/bike/e-rekord.html And yes...the rider is facing backwards...looking in a mirror! Warren |
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#33
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"Warren Berger" <eldberg@cstone.net> wrote in message news:930c70dc.0308021230.1346ac54@posting.google.com... > Friends, > > I thought you might be interested in another of those negative rake bikes. > > > Wouldn't that make the wheel wobble like the front wheel on a grocery cart? > > This "grocery cart" has already gone 88 km/h (55 mph) with the canopy off. > > http://www.eklektus.com/bike/rekord-slike/Dscn0068.jpg > > http://www.eklektus.com/bike/rekord-slike/115_1526.jpg > > http://www.eklektus.com/bike/e-rekord.html > > And yes...the rider is facing backwards...looking in a mirror! > > Warren Never mind, I didn't see the end of this message |
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#34
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_Very_ interesting bike. Looks like there is a lot of weight on a rather small front wheel. Guess at these speeds it is all about air resistance and they aren't too worried about rolling resistance? John Riley eldberg@cstone.net (Warren Berger) wrote in message news:<930c70dc.0308021230.1346ac54@posting.google.com>... > Friends, > > I thought you might be interested in another of those negative rake bikes. > > > Wouldn't that make the wheel wobble like the front wheel on a grocery cart? > > This "grocery cart" has already gone 88 km/h (55 mph) with the canopy off. > > http://www.eklektus.com/bike/rekord-slike/Dscn0068.jpg > > http://www.eklektus.com/bike/rekord-slike/115_1526.jpg > > http://www.eklektus.com/bike/e-rekord.html > > And yes...the rider is facing backwards...looking in a mirror! > > Warren |
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#35
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john riley wrote: > > _Very_ interesting bike. Looks like there is a lot of weight on a rather small front wheel. Guess > at these speeds it is all about air resistance and they aren't too worried about rolling > resistance? The front wheel appears to be a normal size. ![]() Tom Sherman - Quad Cities USA (Illinois side) |
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#36
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"john riley" <lostjohnriley@netscape.net> kirjoitti viestissä news:8171373e.0308021645.4d887f3d@posting.google.com... > _Very_ interesting bike. Looks like there is a lot of weight on a rather small front wheel. Guess > at these speeds it is all about air resistance and they aren't too worried about rolling > resistance? > > John Riley Where to get hard facts about rolling resistance of small wheels vs large wheels? There is a rolling resistance formula force= mass*acceleration of gravity*rollingresistance coefficient. What is the best coefficient attainable with 16 inch wheel? 20 inch wheel? 26 inch wheel? I have somewhere heard of the coefficient values of 0.0015 and up. Sometimes it is not practical to know that there is a connection. One has to know numbers. E.g. I think the surface of the Pacific Ocean will come up a little at least locally, if I jump to swim there. But that is not a good reason not to swin. Although I were worried about the greenhouse effect and Southern Pasicif islands disappearing |
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#37
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Tom Sherman wrote: > john riley wrote: > > > > _Very_ interesting bike. Looks like there is a lot of weight on a rather small front wheel. > > Guess at these speeds it is all about air resistance and they aren't too worried about rolling > > resistance? > > The front wheel appears to be a normal size. ![]() > The front wheel is the one under the rider's head. > > Tom Sherman - Quad Cities USA (Illinois side) |
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#38
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stpi@qc.aira.com wrote: > > Tom Sherman wrote: > > > john riley wrote: > > > > > > _Very_ interesting bike. Looks like there is a lot of weight on a rather small front wheel. > > > Guess at these speeds it is all about air resistance and they aren't too worried about rolling > > > resistance? > > > > The front wheel appears to be a normal size. ![]() > > > > The front wheel is the one under the rider's head. That is exactly the one I was referring to. Since you missed the point of my post, I am including a link to a picture of my bike, which should explain things. < http://www.ihpva.org/incoming/2002/sunset/Sunset001.jpg > Tom Sherman - Quad Cities USA (Illinois side) |
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