[python] Re: idea

Like the attached image - but I supose you could make one pivot down low
like the Python - not sure how to control the steering between the two
or to lock-out one or the other, etc...

gk



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> -----Original Message-----
> From: python-bounce@xxxxxxxxxxxxx 
> [mailto:python-bounce@xxxxxxxxxxxxx] On Behalf Of brechtix
> Sent: Friday, March 18, 2005 10:40 AM
> To: python@xxxxxxxxxxxxx
> Subject: [python] Re: idea
> 
> 
> Where would we put the front pivot? When in line with the 
> cassette there will be a steering flaw under braking, when in 
> line with the wheel (like Mike Burrows' lowracer which had a 
> non driven front wheel turning around its hub) we'd have to 
> put the chain line perpendicular to the plane of the pivot. 
> Which means an extra idler so we're back to the known FWDs.
> 
> So it seems to depend on how bad braking affects steering. 
> Not so easy to install brakes on such an offset front wheel 
> either. Skipping the front brake is not an option.
> 
>  
>       
> "Architecture must not obscure the real beauty found in 
> simple things." D. Berke
>  
> Brecht Vandeputte
> Architect | MSc. Comm & Inf
> Office J.MacLeodstraat 4
> 9050 Gentbrugge Belgium
> M +32 476 238 000
> F +32 93 24 93 46
> www.asiledenuit.be
> 
> 
> > -----Original Message-----
> > From: python-bounce@xxxxxxxxxxxxx
> > [mailto:python-bounce@xxxxxxxxxxxxx] On Behalf Of Greg Kolodziejzyk
> > Sent: vrijdag 18 maart 2005 17:52
> > To: python@xxxxxxxxxxxxx
> > Subject: [python] idea
> > 
> > 
> > Hey - what do you guys think about this idea:
> > 
> > The best way to combine decent steering radius with a LARGE
> > front wheel
> > drive is with a movable bottom bracket (like Python, or other swivel
> > nose designs). The draw back is less mechanical efficiency 
> > due to peddle
> > induced wobble. And of course it's difficulty to learn how 
> to ride in
> > the case of the Flevo or Python.
> > 
> > So, what about combining two FWD approaches. You have a large front 
> > wheel that steers with a conventional headtube and a very, 
> very small 
> > turn radius due to interference issues between the tire and 
> the chain 
> > ring, chain, crank, legs, etc. Once the lowracer has achieved 
> > 'cruising' speed, this small turn radius may be sufficient.
> > 
> > For slow speed maneuvering, the bb boom could be broken - python or 
> > Flevo style, then locked straight when cruising speed has been 
> > achieved.
> > 
> > Greg K
> > 
> > 
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Attachment: DoublePivotIdea.jpg
Description: JPEG image

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