[python] Re: tights-wheel conflict?
- From: Michael Rienstra <ageless@xxxxxxxxxxxxx>
- To: python@xxxxxxxxxxxxx
- Date: Fri, 24 Sep 2004 15:12:02 -0700
Bernard,
I'm hoping that Tom Traylor is right, and that this won't be a problem.
In regards to his design, he says (from
http://traylorfwd.home.mindspring.com/faq.html ):
Question :
I ride in town a lot and sometimes a sharp turn is needed to get out
of the way. What happens to your legs in a sharp turn? - Submitted by
mowestusa
Answer :
You would be amazed at how little you turn the front wheel when you go
around a corner. In a normal 90 degree turn, such as an intersection,
the difference between inside and outside legs is imperceptible. The
only time it is noticeable is in a very tight turn at very low speed,
and then it is less of a problem than keeping your heel out of the
wheel of a SWB recumbent.
I am in traffic almost every time I go riding and I have been riding
this type of bike for more than 20 years. It is not a problem.
With his design, he recommends basically zero rake, which means that
the wheel is turning on an axis intersecting the hub. This is basically
how the Vython behaves when the turning radius is small, but then as
the steering radius increases it begins to behave more like a
center-pivot Python.
So in theory it will exhibit less TEFT movement than Tom Traylor's
design, which he claims doesn't have a problem in this regard
(actually, in the quote above he isn't specifically addressing this,
but the point is that he has no problem making turns on his bike, and
he has done a lot of commuting on his bike).
Build a model of a four bar linkage and you will notice that the
longitudinal arms move in unexpected ways! I don't think you could
attach the seat to one of them and get the desired affect. But I may be
wrong!
Michael
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