[python] pix Columbus python coiled and uncoiled

Hi Jurgen, here some pix of my python.  I have managed to ride as far a half a 
mile without having to put a foot down. But I am often surprized by sudden 
instability and have to make a controled landing.  When I reworked the back to 
make it foldable I inadvertantly turned the rear fork so that it swept down 
instead of up. This changed the angle of the pivot. I first set it at 67 
degrees. It is now at 70 degrees. I don't know if this has effected stability 
because I could hardly ride it before.  I'm doing much better now.  But not 
good enough. Do you think turning the back forks over to get the pivot back to 
67 degrees will make the bike any more stable?  I do find that I am more steady 
with the seat back more vertical. When I lay it back to be more comfortable I 
am less stable. I started with a sling seat but found I needed lumbar support. 
I made a curved plywood seat back that fits over the sling. Good support but it 
is a little klunky. I'm still thinking about how to rework
  it.  
Thank you for sharing your python with all of us.  I have had such a good time 
dreaming, building, and now almost riding this unique bike. I feel like a boy 
again even though I'll soom celibrate my 63rd birthday.

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