"Ryan Cousineau" <
[email protected]> wrote in message
news:rcousine-342AAC.10234203022008@[74.223.185.199.nw.nuvox.net]...
| In article <
[email protected]>,
| Werehatrack <
[email protected]> wrote:
|
| > On Sun, 03 Feb 2008 11:38:20 -0500, Robert Perkins
| > <
[email protected]> may have said:
| >
| > >I have a 20" suspension fork on my Hornet recumbent
| > >(
www.radius-liegerader.de). The fork manufacturer, Kangaroo, is now
| > >defunct. I am looking for replacement MCU urethane or other
elastomers.
| > >
| > >I don't want to replace the fork because it has a special fitting to
| > >allow the remote steering rod to attach to the fork. Plus, the
headset
| > >is 1 1/4" threaded- try finding one of those.
| > >
| > >I need 20mm diameter, and 25mm diameter elastomers. I need 200mm
length
| > >of both. I plan to cut them to the right length, since the elastomers
| > >are themselves 10mm thick, then separated from the next elastomer by a
| > >plastic piece.
| > >
| > >So, does anyone know where I can locate such beasts?
| >
| > You might want to investigate the possibility of using 20mm and 25mm
| > circular punches to cut rings from sheet stock of an appropriate
| > material. Of course, this presumes that the material can be had from
| > some source, which is itself a problem. I've had limited success
| > finding such sheet foams in the past when they were needed for the
| > construction of padded cases for equipment, but a little casting about
| > may produce a source. Part of the generalized problem in this regard
| > is that with the death of the paradigm of local production of goods,
| > the demand for small quantities of such materials is effectively
| > absent in many areas, and as a result there is no supply available
| > from any obvious source.
|
| Werehatrack, was there ever an era when MCU urethane would have been
| widely produced by local producers? I'm sure you could have found it in
| certain cities (either very large or where industry called for it), but
| it seems to me that the centralizing and offshoring of a lot of goods
| production has contributed to the diversity of materials easily
| available to hobbyists.
|
| I'm sorta trying to suggest that the era of small local manufacture
| probably wasn't widely better at distributing goods, though places like
| LA (aerospace!) were probably a bit more fun
.
|
| -RjC, who hears the Boeing surplus sales in Seattle continue to be
| pretty awesome,
|
| --
I've read that skateboard bushings (see link below) can be used to replace
the elastomers on Girvin Flexstems. I don't know the size of the elastomers
at the following link, but check them out ...they may work for your fork
http://www.outlookskates.com/Bushings2.htm