[python] Re: Bronze bearings
- From: Jürgen Mages <jmages@xxxxxx>
- To: <python@xxxxxxxxxxxxx>
- Date: Sat, 31 Jul 2004 08:32:31 +0200
Hi Ralf,
I am forwarding the response from Hanno in the
flevo mailinglist:
----- Original Message -----
From: "Hanno Hirsch" <superhanno@xxxxxx>
To: <Flevofan@xxxxxxxxxxxxxxx>
Sent: Friday, July 30, 2004 9:40 PM
Subject: Re: [Flevofan] Bronze bearings
> Hello Jürgen and all the other pivot scientists....
>
> > I am not an engineer, but the following two postings, one from
> > Ralf Weigel (python) and the other from Hanno Hirsch (flevo)
> > show, what might be the disadvantage of bronze bushings for
> > the steering pivot.
>
> While I am not only into bronze as material for the bushings, the iglidur
> bushings claim to be made of some sophisticated plastic.
>
> As you flip t6hrough their web pages, you notice, there are a broad
variety
> of bushings with quite different capabilities, so there shuld be some with
> reduced brake-loose-momentums.
>
> > What Hanno called the "brake-loose-momentum" and Ralf
> > calls the "stick-slip-motion" might be very disturbing, when
> > riding such a bike.
>
> It might be disturbing, depending on its level. On a normally steered SWB
> Recumbent I have a "rotten" headset, where it takes some force to bring it
> out of the center line, its kind of annoying, but not too seriously.
>
> On a center pivot bike this effekt might be even less disturbing, as you
> generate much bigger momentums with the feet at a quite larger lever than
> you do usually with the handlebar with the arms.
>
> as noted before:
>
> unless we try it, we will never know....
>
> Hanno, still curious what outcomes....
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