Hello Jürgen, Lutz and all I spent the whole evening with the mailing lists... truly amazing... Some really nice ideas, and I found it absolutely addictive. I never found anything like this, I must say :). Very good indeed. I found some really interesting answers to many of my questions, some dead links and many many many useful information. I wish I had the time to read it before... Well... I will start again today, a fresh new start, I hope. Sun is shinning today, wich is good, as I have to work in the backyard. I will try the arch with 30*30*1 sqare tube - I used it on my trike and worked just fine as the BB support... In python's front wheel there's additional support provided by the wheel axis triangular support, so I suppose it will be less stressed, but a little bit heavier than a standard frame. I suppose it will not be that bad... Cheers, Jaime ============================================================ 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. ============================================================