[python] Bipolar - a double-pivot folding python

  • From: Vi Vuong <vi_vuong@xxxxxxxxx>
  • To: python@xxxxxxxxxxxxx
  • Date: Sun, 10 Apr 2011 21:36:51 -0700 (PDT)

Here goes a bicycle version of the Skatecycle, same folding requirement as the 
μPython, to fit in the back of small car boot with seat up.  For 20" wheels, 
double-pivot folding mechanism is used for max compactness.  The seat is split 
into 2 pieces, with the backrest mounted to the rear pivot to control the rear 
wheel, which makes this bike all wheel steering (AWS), with rear wheel turning 
only when the body leans into a turn. Turning feels tighter and smoother than 
regular python; going straight is not too bad, but instability seems more 
sudden 
/ unpredictable...

Also see more use of sticks for stabilization 
(skiing?) http://www.youtube.com/watch?v=USd9OYN4BEY


________________________________
From: Vi Vuong <vi_vuong@xxxxxxxxx>
To: Python <python@xxxxxxxxxxxxx>
Sent: Sat, April 2, 2011 10:39:48 AM
Subject: [python] 2-Headed Python (Skatecycle)


In case RWS is not challenging enough...

Interestingly, first prototype has one 1 pivot like a python, then evolved to 2 
pivots; see http://www.youtube.com/watch?v=kzoQ1JrTVgk&feature=related 

Vi

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