----- Original Message -----

From: sigurd grung

To: harryproa@...

Sent: Friday, May 06, 2005 7:17 PM

Subject: [harryproa] Telescoping slippery surface

Mark wrote

>The male and female beams will have a couple of bands
of built up resin/graphite applied where they overlap
when extended. This will give plenty of clearance when
telescoping to prevent jamming.

Do you mean a narrow band at the very end of each part
of the beam?

Is this as good as UHMW plastic? I imagine uhmw to
have a bit less friction, wear less on the beams
(since it is softer?), be less durable, easier to
change when worn out. Less chance of jamming since it
probably has less compression stiffness than epoxy and
will also be worn down easier where there is humps.

What do you think, did you consider it, and what were
the reasons for using graphite/epoxy instead?

Sigurd


__________________________________________________
Do You Yahoo!?
Tired of spam?  Yahoo! Mail has the best spam protection around
http://mail.yahoo.com


 
Yahoo! Groups Links

<*> To visit your group on the web, go to:
    http://au.groups.yahoo.com/group/harryproa/

<*> To unsubscribe from this group, send an email to:
    harryproa-unsubscribe@...

<*> Your use of Yahoo! Groups is subject to:
    http://au.docs.yahoo.com/info/terms/
 





--
Internal Virus Database is out-of-date.
Checked by AVG Anti-Virus.
Version: 7.0.308 / Virus Database: 266.10.3 - Release Date: 25/04/2005