[python] Re: Rear Suspension

  • From: "dirk@xxxxxxxxxx" <dirk@xxxxxxxxxx>
  • To: python@xxxxxxxxxxxxx
  • Date: Wed, 23 Feb 2011 12:05:37 +0100 (CET)

Hi,


if you have a triangle between pivot, seat conection and brake mount/rear wheel,
this should be stiff enough even with thin tubing. Also, you could design this
triangle with just one tube going round and weld in a normal bike fork which
also gives you brake mounts. Standard forks are quite optimised in terms of
suspension.

A fat rear wheel (which needs less pressure compared to thinner ones) also makes
up for a fine suspension with low failure and maintance potential :-)
 
greetings,
DirkS

 
 

Jaculus <jaculusbent@xxxxxxxxx> hat am 23. Februar 2011 um 11:45 geschrieben:

> no cracks, but the rear part of the jaculus is way to rigid. Riding
> over anything but asphalt gives a headache because of the vibrations.
> I would use smaller tubing for the next one, saves weight and improves
> the ride.
>
> For the rear part of a (distant) future brother of the jaculus i was
> thinking of two straight tubes from eighter side of the rear axle to
> the sides of the pivot. These two should probably be connected just
> before the rear wheel (also brake mount) for the top support of the
> seat, and at the pivot.
>
> Jaculus
>
> 2011/2/23 Jürgen Mages <jmages@xxxxxx>:
> > Hello Rod,
> >
> > it is not a bad idea to leave out the rear suspension. Considering the mount
> > of effort, weight and the possibility of failure it seems not really worth
> > to include a rear suspension.
> >
> > So, I am thinking of revising my building side:
> >
> > http://www.python-lowracer.de/construction.html
> >
> > The goal is, to simplify the building process and to save weight.
> >
> > As I never rode unsuspended Pythons, I am curious to hear some experiences
> > from you and other riders. Any cracks of the rear frame yet?
> >
> > Cheers,
> > Jürgen.
> >
> > On 22.02.2011 01:35, r.mccrady@xxxxxxxxxxx wrote:
> >>
> >> My wheel base is 114cm, with 26" (mountain bike standard) wheels. I
> >> built it following the P3 instructions from Jurgen, but I didn't
> >> include the rear suspension.
> >>
> >> -Rod McCrady Los Alamos, New Mexico, USA
> >
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http://dirk.steuwer.de

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