[python] Re: making a python!
- From: "25hz" <25hz@xxxxxxxxxx>
- To: <python@xxxxxxxxxxxxx>
- Date: Sat, 4 Mar 2006 16:17:22 -0500
Initially, most builders seem to have taken Jurgen's design and tweaked it a
little bit to suit their ideas, their building materials and what kind of
tools they have available. Now though, if you click the pictures in the
gallery, they will take you to some sites where the builders have pretty
detailed plans.
For the instability issue, that is primarily on downhills - there's nothing
to stop you from hitting those speeds on the flat except for the engine. As
for the downhills, as your finesse/coordination and riding skills improve,
so will your speed. After about 650km, I could hit 60kph on a downhill and
my friend is likely a little faster than that on his. Practise makes
perfect, but stability can be improved with pivot angle changes.
For uphlls, frankly, I am amazed at how well they climb. From riding the
hills on my trikes, I need to be down around 20 gear inches for some of
them, but on the python, I am up near 30 gear inches for the same hills.
The pivot angle has an effect on climbing stability as well though. As you
approach 60 degrees, low cadence will give you a propensity towards wheel
flop(especially on steeper hills), while angles closer to 70 degrees will
make lower cadences easier to control. In short though, they climb very
well, and climb even better when you get good at carrying your speed from
the last hill you came down.
I've ridden 4 different pythons (three that I built), including two ice
racing variants, but every one of them had their own distinct personality
and handling "preferences". They are completely different than anything I
had ever ridden and I had to learn to ride them from square one, like when I
was a kid. They are very satisfying when you learn to ride them, very fast,
and very comfortable. If you are into challenges, a python is for you, not
only for building, but for getting riding proficiency.
> Hi I've recently joined the list (Impressed by the great photos of
> finished projects) with the idea of trying to make one, My question is
> this.... are there any plans (like the flevo ones) or is each one each
> bike an individual just built round the principles of the original with
> people designing there own based on what materials they have available?
> I must admit I was a little worried about the instability above 50kph
> but then realised that on my own bike I get worried if I go above 45kph
> downhill but it may be different on a recumbent. I live in an area with
> quite a few hills how do people find them for hill climbing?
> Any advice welcome
> Cheers Simon
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