[python] Re: Folding Python Tandem
- From: Vi Vuong <vi_vuong@xxxxxxxxx>
- To: "python@xxxxxxxxxxxxx" <python@xxxxxxxxxxxxx>
- Date: Mon, 18 Jun 2012 19:24:31 -0700 (PDT)
Hi Dirk B,
Yes, the trail is a quite long, 27cm/11in. I will try to cut in half.
Vi
>________________________________
> From: Dirk Bonné <dirk.bonne@xxxxxxx>
>To: python@xxxxxxxxxxxxx
>Sent: Sunday, June 17, 2012 12:52 PM
>Subject: [python] Re: Folding Python Tandem
>
>
>On 17.06.2012 04:32, Vi Vuong wrote:
>Hi All,
>>
>>
>>Following the Stokid (https://www.youtube.com/watch?v=Jovnjd0YVHo) plus
>>folding capability, seats are pushed to extremes on a short frame with small
>>rear wheel (compromises) to make room for the stoker. Unfortunately there is
>>barely enough for a kid, more like a monkey. Rear wheel pedaling has strong
>>influence on steering (PSI).
>>
(That is not really what psi means)
>
>My bet is that influence of the stoker can be deminished by reducing
trail. At zero trail your stoker would not more be able to use
body-torsion to steer.
>
>When my son was making a lot of action on the stokid, I found that
the bike had a less fine steering, but never someting to worry
about, and not at all that much as seen in your video (In fact, an
outside observer would not notice). The boy weighs only a little
above 20kgs and his CG is not that high.
>
>Dirk
>
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