[python] Re: Japan

Hello

>>Using the fork principle for the steering pivot is least space consuming:

I watched your webpage and learned that fork-principle steering pivot is
very space saving. I also understood that the structure contributes to the
low frame configuration of Python, which makes Python very charming. It
really think it is superb design.

However, to my regret, my welding skill is not good enough to keep complete
horizontality between the two plates contacting the bearing unit.


>>What kind of tubing do you use for your python frame?

I use steel rectangular tubes. I assume it is made of steel called 
“SS400”
.
The size of the tubes are 40x40x1.5mm for the frame and 40x20x1.5mm for the
rear fork.
I used the same size of tubes for my Flevo clone and Kalle clone. According
to my experience, they are strong enough.

By the way, do you know what kind of steel is used for the frame of
ZOXBIKES, my favorite German recumbent bike. I am deeply interested in what
materials are used for ZOXBIKES frames.


>>It seems that you have a TIG welding machine - right?

I have a small TIG Welder. However, to my regret, it is a DC machine and it
can welds only steel and stainless, not aluminum.

http://doglamagla.hp.infoseek.co.jp/20051215/1.jpg
http://doglamagla.hp.infoseek.co.jp/20051215/2.jpg
http://doglamagla.hp.infoseek.co.jp/20051215/3.jpg

It may be rather expensive as a tool for personal hobby, but I feel happy to
own it.

Best regards.


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