[python] Python on eBay

  • From: "Boyd, Mark" <mark.boyd@xxxxxxxxxxx>
  • To: <python@xxxxxxxxxxxxx>
  • Date: Fri, 25 Oct 2013 09:27:35 +0100

Hi

 

One of my Pythons is on eBay at present: 
http://www.ebay.co.uk/itm/recumbent-bicycle-/221301006533#ht_386wt_1170 The 
auction closes on 29 October. Apologies if you get this or similar message 
three times. I seem to be having trouble with my list registration.

 

Cheers

 

Mark

 

Dr Mark Boyd 
Youth Manager 

UK Headquarters The Lodge, Sandy, Bedfordshire SG19 2DL 
Tel 01767 693310 

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The Royal Society for the Protection of Birds (RSPB) is a registered charity: 
England and Wales no. 207076, Scotland no. SC037654

 

 

From: python-bounce@xxxxxxxxxxxxx [mailto:python-bounce@xxxxxxxxxxxxx] On 
Behalf Of Ole Blente
Sent: 25 October 2013 08:20
To: python@xxxxxxxxxxxxx
Subject: [python] Re: izzy bike

 

Vi: Im sure, you are right about the upright position. It is true for all bikes 
I think. On my Toxy CR there is a big difference when the seat is lovered. 
"Standing" is superior to "lying" when it comes to maneuver and learning. 

"Lying" is superior in speed. 

 

2013/10/25 Vi Vuong <vi_vuong@xxxxxxxxx>

Hi Tiha,

 

It seems that upright sitting position and "normal" handlebar help a lot.  
Other negative-trail bikes seem easy to learn also, 
http://www.google.com/search?q=low+rider+bicycle.  

 

Perhaps a more upright python may be easier to learn.  Seat angle can be 
lowered with more experience.  Not sure if handlebar would help learning 
python, gloves and sticks do.  Handlebar on python seems to be good for fine 
control at high speed, beyond what the legs can do...

 

Vi

         

________________________________

        From: Tihamer Juhasz <balamber@xxxxxxxxx>
        To: python@xxxxxxxxxxxxx 
        Sent: Wednesday, October 23, 2013 8:24 AM
        Subject: [python] Re: izzy bike

         

        One more detail: I contacted the creator of the Izzy on FB and asked 
about handling. This is what he told me:
        
        The bike is very easy to ride and manoeuvrable but it takes a few 
minutes to get use to it. This is because, just like you've noticed, caused by 
the wire. It's a bit like learing to ride a bike again , once you get the hang 
of it, it's all smooth sailing from there!

        End of quote.

        Learning to ride the Python definitely takes longer than a few minutes. 
So it would be really interesting to try this ride-by-wire approach on a Python.
        
        Tiha

         

         

        On Wed, Oct 23, 2013 at 5:25 PM, Steffen Risse 
<big.skangster@xxxxxxxxx> wrote:

        that's what izzy does

         

        2013/10/23 Peter Švančárek <peter.svancarek@xxxxxxxx>

        What about using pulleys and rope(cable) anchored to pulleys so they 
wouldn't rely on friction?

        Dňa 23. 10. 2013 <tel:23.%2010.%202013>  15:02 Steffen Risse wrote / 
napísal(a):

                Hi Vi [haɪ̯fɪ 
<http://de.wikipedia.org/wiki/Liste_der_IPA-Zeichen> ] ;o),

                but friction isn't a conastant ratio, and the angle the 
steering bar has for a certain steering angle will change every time. maybe the 
steering bar is sometimes allready like full conrering, but you're still going 
straight. The clamped pullies prevent such situations as long as they don't 
brake.

                Steffen

                 

                2013/10/23 Vi Vuong <vi_vuong@xxxxxxxxx>

        
        
        

                Hi Steffen,

                 

                Friction steering should be similar to the Izzy's pulley design 
in a sense that input angle is greater output angle due to slippage.  However, 
the "ratio" depends on the input force / slippage. It would be cool if speed 
sensitive steering is achievable with python.  Will report back after more 
experimentation.  Here is the handlebar set up I am using, 
http://en.openbike.org/wiki/FP02

                 

                Vi

         

         

         

         

 

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