Howdy all! News from Hollyday's for our friends on the list: Baby girl born
6/11/02, Christina. Momma and babe doing fine. Her 2 big brothers are a
little jealous.

I wanted to reply to the thread about rubber protection. Armor-All and other
consumer brand "protectants" have petroleum penetrants to make them 'work
like magic' on synthetic plastics, but it kills anything not plastic in
short order... like leather and natural rubber. Here are some links to more
info:
http://www.hollyday.com/rubber.htm
http://www.hollyday.com/hsfaq.htm
http://www.si.edu/scmre/rubber.html

Mandrel dipped rubber, as sold by Aerofoam at
http://www.aerofoam.com/hosemonster.html, is very tough. The grit issue
(abrasion) during storage is not really a big deal, as it is with smaller
cross sections of the extruded stuff. It can take the rough grass and gravel
where we are sometimes forced to fly. The real killer is the UV hardening.

Lubricants are used on rubber powered free flyers to reduce rubber to rubber
friction while winding millions of turns into a rubber motor, to avaoid
breaking at higher winds. Not related to rubber protection. Merely
stretching a rubber close to the point of breakage breaks down some of the
internal structure, so expert rubber fliers will replace their tan rubber
before chemical breakdown is much of an issue. Even dipped tubing will
lengthen about 1% after stretching to 350%. Repeated stretching to the same
distance has no further effect.

Mark at Aerofoam.com and Dieter at Shredair.com have been working hard over
the last couple months to bring their versions of rubber and switches back
to market for everyone. Much appreciation, guys! I will be adding links to
their pages on Hollyday.com.

We miss you all and wishing you lots of thermals this summer.
Rich Hollyday
rich @ hollyday.com (no spaces)

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