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Stiletto?????? - Page 3

 
 
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  #31  
Old 07-02.-2003
Tom Sherman
 
Posts: n/a
Default Re: negative rake

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)
  #32  
Old 08-02.-2003
Warren Berger
 
Posts: n/a
Default Re: negative rake

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
  #33  
Old 08-02.-2003
Mark Leuck
 
Posts: n/a
Default Re: negative rake

"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
  #34  
Old 08-02.-2003
John Riley
 
Posts: n/a
Default Re: negative rake

_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
  #35  
Old 08-02.-2003
Tom Sherman
 
Posts: n/a
Default Re: negative rake

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)
  #36  
Old 08-03.-2003
Optimistx
 
Posts: n/a
Default Re: negative rake

"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
  #37  
Old 08-03.-2003
stpi
 
Posts: n/a
Default Re: negative rake

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)
  #38  
Old 08-03.-2003
Tom Sherman
 
Posts: n/a
Default Re: negative rake

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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