On Fri, 06 Jan 2017 01:53:57 +0000, Phil Lee
wrote:

John B. considered Thu, 05 Jan 2017 11:52:43
+0700 the perfect time to write:

On Thu, 05 Jan 2017 04:36:02 +0000, Phil Lee
wrote:

Joerg considered Wed, 04 Jan 2017
10:27:55 -0800 the perfect time to write:

On 2017-01-04 10:00, Jeff Liebermann wrote:
On Wed, 04 Jan 2017 07:27:48 -0800, Joerg
wrote:

I'll look into contact cement. Gene also suggested that. Cost is not so
much an issue but shelf life after opening is. The usual rubber cement
is toast only a few months after opening.

I've had the same experience. The problem with the leaking bottles
and tubes seems to be related to heat. My squeeze tube of contact
cement doesn't last very long after it's used once, so I'm not sure
that looking for a better glue is the right answer. A better way to
prevent outgassing seems to be a better approach. As David Scheidt
suggests, buying the rubber cement or whatever in a can lasts much
longer. I keep my can inside a plastic Ziploc bag, which seems to
help. I've considered putting it inside a glass jar, and pressurizing
the jar to above the vapor pressure of the solvent to limit loss by
evaporation. I've done this with some chemicals and drugs, but never
tried it with glue.

Also, be sure to test the strength of your contact cement joint.
There's nothing stronger than a vulcanized bond, so I'm fairly sure
that contact cement will not be as strong as a proper vulcanizing
patch. Whether it's strong enough is the question.


I'll ask the automotive place for vulcanizing fluid as David suggested.

As for preventing oxygen to get at it I am wondering whether CO2 would
work. I started making beer to trapping some of the CO2 generated during
fermentation shoud be easy. It comes out of the air lock.

The problem isn't oxygen getting in, it's the volatile solvent getting
out.

A pail of water ?

That may be a lot less daft than it appears at first sight, but isn't
very portable.

What? You never heard of Jack and Jill, who went up the hill to get a
pail of water?

Or a "bucket of beer? See
https://www.quora.com/How-did-a-buck...ome-a-standard

I just store containers upside down, which seems to work well for
everything from assorted types of paint to various glues.
Small tubes are more of a problem, as they can develop pinholes just
from flexing while they are being carried, so it's not necessarily the
lid that isn't sealing.
I suppose if I was still able to ride, I might be tempted to
experiment with RTV silicon coating or vinyl dipping the tube before
use, but any test I could do now would be invalid for normal cycling
use - I do have a patch kit in the wheelchair bag, but it (the
wheelchair) sees far less use than any bicycle I've owned, and I've
never needed to open the patch kit at all (I also carry a spare inner
tube, and have never had a repairable puncture in a tube on the
chair).
--
cheers,

John B.