On 2018-08-13 11:34, Jeff Liebermann wrote:
On Mon, 13 Aug 2018 10:29:44 -0700, Joerg
wrote:

On 2018-08-13 08:27, Tanguy Ortolo wrote:
Frank Krygowski, 2018-08-13 17:11+0200:
Nice. If the appearance was bothersome, you could use a black tube held
in place with black zip ties.

Black tube, yes, if I can find some, but I only ever saw white tube in
hardware stores. Black zip ties, no, bad idea, as they let the tube
slide on the sides. I would rather use some black tape.

Zip ties are also bad in terms of reliability. It seems UV rays
embrittle them and then they just fall off. A while ago I chased and
stopped an MTB rider whose rear brake hose had come loose because of
that and was chafing on the rear wheel. Luckily I always have a snippet
of wire in my tool kit. Zip ties, too, but those only for temporary fixes.

You can buy UV resistant zip ties. They're loaded with carbon black
that blocks UV. However, not all such zip ties are equally resistant
to UV. Some of the cheap junk has much less than the recommended 2%
carbon black. After having an antenna installation fall apart in
about a year due to crumbling zip ties, I bought some that are genuine
Polyamide 6.6 UV resistant per ASTM D-4066PA411. No problems so far
after about 5 years:
https://www.hellermanntyton.us/bundling-securing/cable-ties/standard-cable-ties-special-materials/
https://www.hellermanntyton.us/resources/materials
https://www.solarpowerworldonline.com/2016/03/not-all-uv-rated-cable-ties-have-long-lifespans-on-solar-projects/


The one that popped was the stock tie from a high-Dollar Specialized
MTB. I can't imagine them being cheap on zip ties. Metal is generally
better.

--
Regards, Joerg

http://www.analogconsultants.com/