[python] Re: Python trike ideas

Hi Stefan,

So your two forks are completely fixed to the grey crossbar?
My first impression was, that your were going to have tilting rear wheels :-)

Have a look at the jetrike project from Hernry Thomas (an earlier thread). He 
used some diagonal tubes for increased frame stiffness (from BB to each 
side). 
Where do you plan to fasten the seat, especially the upper end?

Regards,
DirkS


On Wednesday 05 September 2007 13:00:47 sbartels@xxxxxxxx wrote:
> Hello Juergen and everybody else...
> I made this drawing (not to scale) of a Python-type trike. I had the idea
> of using two forks for the back wheels. Do you think that will work? The
> center "hinge" (?) is low to get the pendulum effect. But I copied the
> Hipparion "outrigger" because there is no interference of the chain-line
> with the stays.
> I lack the necessary English bike vocabulary...
> The drawing is not to scale, obviously.
> Your opinions would be most welcome!
> Stefan
>
> Zitat von Jürgen Mages <jmages@xxxxxx>:
> > Hello George,
> >
> > Yes, the Hipparion is the only other neg. trail delta trike I know and
> > it is definitely older than the python trike. It is linked on my page
> > and I already had some mail conversation with the finnnish designer Esko
> > Meriluoto: He could not imagine that a two wheeler with neg. trail is
> > rideable at all.
> >
> > The geometry of the Hipparion and a Python Delta is quite similar, but
> > the Hipparion is distinguishable trough its steering-damper (which Esko
> > regards as a must) and its massive frame construction (no idea why,
> > maybe its the roads in Finland?).
> >
> > Cheers,
> > Jürgen.
> >
> > On 05.09.2007 11:39, George Durbridge wrote:
> > > On Mon, 2007-09-03 at 22:47 +0200, Jürgen Mages wrote:
> > >> Pictures, there are a lot. Instructions few. Maybe I should do a trike
> > >> side on my page, where all info is gathered.
> > >
> > > Good idea.  In the meantime, there is a good drawing of a Python-like
> > > trike at http://personal.eunet.fi/pp/davinci/proto2eng.html
> > >
> > > The Hipparion isn't strictly a Python, because the first prototype
> > > Hipparion was made before the first Python.  But it's a negative-trail,
> > > centre-steered delta trike, seemingly pretty well developed.
> >
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