Scott:
You may want to reconsider the Tygon + Nylaflow combination.
Tygon (vinyl) tubing has a lot of plasticizers to make it flexible.
Even the "food grade" has a bunch of phthalates in it that I
would not consider "food". Where Tygon has been laying in
contact with other materials, such as plexiglas (acrylic),
the plexiglas is discolored and more brittle.
My Nylaflow tubes were sheathed where necessary with
a polypropylene tubing that I believe to be less damaging.
After ten+ years, the Nylaflow felt brittle and could be shattered
with a hammer (after removal). New Nylaflow should not crack
when crushed.

A few years ago, I replaced all the Nylaflow with DHI
Kevlar-wrapped instrumentation tubing. Search the archives for "DHI"
For example:
http://lancaironline.net/lists/lml/Message/20601.html
http://lancaironline.net/lists/lml/Message/39754.html
http://lancaironline.net/lists/lml/Message/52689.html

> Brake lines are the original Nylaflow, also encased in
> clear food-quality Tygon tubing for protection, properly
> supported near the brakes and with an ample curve so
> that gear retraction will only slightly twist them when
> everything is sucked up.  I see no reason to replace
> them at this time.


-bob

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