[python] Re: px5 stability

What if, instead of rigidly fixing the seat bottom to the front steering
assembly, one attached it to the rear assembly on a swivelling mount, with the
seat back separately and firmly connected to that aft part of the frame? Perhaps
this would accomplish what Frank has in mind.

Eric

Quoting Olaf Johansson <noll@xxxxxxxxx>:

> 
> In the original set up with the seat attached to rear part you use a 
> mixture of leaning the legs and swivelling the hip in order to steer. 
> If you sit on the front part of the frame ? the part that is to be 
> steered ? it will be impossible to manoeuvre the bike unless your 
> shoulders were tightly strapped to the back rest. Even then steering 
> would be a real stunt ;o)
> 
> Olaf
> 
> 
> 
> On Mar 28, 2005, at 21:18, Frank Parmir wrote:
> 
> > Hi Jurgen, I've been reading the list for several monts. A  while back 
> > you reported the px2 was not as stable at high speeds as the p1 and 
> > p3. Is the px5, which has the pivot moved to the rear any more or less 
> > stable? I hope to begin building the first python in Columbus, Ohio 
> > (USA) very soon and am anxious to hear.  Also, I am thinking of 
> > attaching the butt bucket part of the seat to the front half to 
> > eliminate pedaling perturbance.  I will still attach the back support 
> > with arm rests for shifters and brakes to the back half. That means 
> > steering by swiveling the hips, not just the legs. Do you have any 
> > predictions about how sucessful that might be. 
> > Also, I'm a little woried. You haven't posted since your speed record. 
> > Are you OK?
> 
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