Hi Juergen, yes, it is about time. Don't look to close at the welding. :-) I did'nt really dare to publish the pictures in the list. But it fact, the bike behaves quite well and now I have something to work on. Because I don't trust my weldings, I installed a drum brake in the back. That is probably the safest solution. Initially I had two 20'' wheels. But the wheel I found wth the drum brake is 16''. Using the 16'' wheel also changed the pivot angle from about 65 to 60 degree with incidentially a much better steering control. And, I can reach the ground with both my hands. So you see, the whole project is rater experimental. Nothing to be proud of yet. The only thing I really thought about for a long time before starting construction was the centre suspension. I crafted from a 1,5 mm plate what I call a double fork as the centre part of the bike. In the front, the fork holds the steering pivot BB. Behind it holds another BB which is the heart of the centre suspension. Initially I had an engine mount rubber block right under the seat. Maybe you can figure it out. It was actually extremely comfortable. But for the beginning I have chosen the static solution and replaced it by a small metal tube. So there is no suspension at the moment. But as soon as I have some practice, I will try it again. High tech of course is the Schlumpf speed drive. A mount drive would be better, but would fit on the bike back part that I choose for my bike. Gruesse Thomas >>> Jürgen Mages <jmages@xxxxxx> 02-09-2007 12:07 >>> Hej Thomas, any chance to see a picture of your work? Best regards, Jürgen. On 02.09.2007 00:21, Thomas Paul Jahn wrote: > Hej do, > I have finally brought my python home from the workshop in Ganløse to make some first expirience. Today I circled 3 hours in the park. my son enjoyed seeing father like 3 years old. He want's a python too. :-) And he insisted it should be a python :-)). not just recumbant. > Maybe he is right. > > My first try, really just a few 100 meters, was without handle bar. ...and brakes. Now I attached one handlebar to mount back brake and the gear shifter. And now, with the new situation,whenever I touched the hadlebar, I tiped over. :-I > But then after 3 hour in the park, I have learned to USE the handlebar. It is attached to the seat. So I can actually use it to support - with my hands - the body steering. > Or you say: I learned body steering because of the handlebar. But I don't think so. > I know I sound rediculous trying to discuss with you guys. You have really experience. And I know that is needed :-). But without using the handlebar, I cannot role the bike without padelling. I have tried both!! > So I think: handlebars are good. And I could imagine, that the same applies at high speed. > I have no idea though, how it would feel, when the handlebars would be attached to the front part. It would certainly not support in the same way!? > > I definetly need a propper seat. I have quickly constructed something from an old camping chair supported by a fork. I expect the 'propper' seat will give me more steering control. > .......Maybe then, I don't feel the benefit of the handlebars an longer. :-( > > Most important: It was great fun. > It's improving. I can still dream about it - because I am far from perfect on the bike-, but I can already imagine what it will be like. :-) > > Thanks for sharing the python idea!! > Thomas ============================================================ This is the Python Mailinglist //www.freelists.org/list/python Listmaster: Jürgen Mages jmages@xxxxxx To unsubscribe send an empty mail to python-request@xxxxxxxxxxxxx with 'unsubscribe' in the subject field. ============================================================
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