Path: ...!feeds.phibee-telecom.net!2.eu.feeder.erje.net!feeder.erje.net!fu-berlin.de!uni-berlin.de!individual.net!not-for-mail
From: Jeff Liebermann <jeffl@cruzio.com>
Newsgroups: rec.bicycles.tech
Subject: Re: Very Slow Leaks.
Date: Tue, 06 May 2025 10:42:54 -0700
Lines: 31
Message-ID: <5ihk1kpgm9olme5piu7s6rbtrvce4g4gdd@4ax.com>
References: <7D6SP.248942$s5Kd.98838@fx14.iad> <m7seapF1hl3U1@mid.individual.net> <L59SP.1334$RXsc.918@fx36.iad> <vvbdsn$1cl75$5@dont-email.me> <qagk1ktafpmgk46342dkrm30vp6n578bdu@4ax.com>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
X-Trace: individual.net UYzSWZSJJb34SjwR+CjndwS723WfhNxF2mazoENtCpVnSZQamn
Cancel-Lock: sha1:ETtvfHjm8ckNgg+zilgtKvToK5k= sha256:ELn899qBm1ou/l9s7LdIi5A/mhht7fJx/ZeWIrIZJnI=
User-Agent: ForteAgent/8.00.32.1272
Bytes: 2358

On Tue, 06 May 2025 10:19:59 -0700, Jeff Liebermann <jeffl@cruzio.com>
wrote:

>I once bought some inner tubes that seem to have come from the factory
>with leaks. (...)

A bit more.  I didn't have enough patches handy, so I used a small
blob of automotive "gasket maker" to plug the hole.  
<https://www.permatex.com/products/gasketing/black-gasket-makers/permatex-ultra-black-rtv-silicone-gasket-maker-5-oz/>
I didn't ride enough to determine how many months or miles the black
goo was going to last, but it seems like it would work on small pin
holes.  I don't recommend it for large punctures, long cuts or cracks.

Also, I had some slow leaks that were difficult to find using soapy
water.  (At the time, I didn't think to try the ultrasonic leak
detector).  So, I over-inflated the inner tube.  I think it's probably
26 x 1 3/8:
<https://www.learnbydestroying.com/jeffl/crud/inflated-tube.jpg>
Not only did the soapy water detect the leaks, I could hear the air
leak and also feel the air with my fingers.  Also, the normal size of
the tire is the mounted tire located behind the over-inflated tire.

If I ever get around to buying a IR camera, I could try heating the
over-inflated tube, and possibly see the air leak because of the
temperature difference.  

-- 
Jeff Liebermann                 jeffl@cruzio.com
PO Box 272      http://www.LearnByDestroying.com
Ben Lomond CA 95005-0272
Skype: JeffLiebermann      AE6KS    831-336-2558