[python] Re: centre steered AND centre pedalled?

Obviously, if you could place the bb in the hub that would enable short
persons to ride the python.


As you might know Thomas Kretschmer tried to build a geared hub
crank which he called "direct-drive". There is a picture on the flevofan
homepage. I phoned him some years ago, while he was busy looking
for a sponsor for his idea. Finally he gave up because of too much
troubles.
The basic idea is quite attractive: No chain!
The Schlumpf Drive shows that a geared BB is possible, but it only has
two gears. As a resumee I would say that the "direct drive" is too
complicated to be of practical value!.

One can develop a lot of kinky and complicated stuff, which appears to be
ingenious, but only time and the challenge of everyday usability can tell,
if it is worth existence. Hope that the 4bl is not a candidate in this sense
;-)


I questioned the loss of momentum but what I ment was the loss of
leverage - would you still be able to lean the front wheel (and get it up
again) without the leverage that the distance hub to bb provides in the
original python?


That should not be the problem. A disadvantage might be that you cannot
use wheels smaller than 26" and that the wheelbase and turning cycle will
increase.

Regards from Jürgen.

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