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Old 11-16-05, 12:38 PM   #1
erok
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what are the little rubber tubes in some patch kits for?

pyramid puts them in their kits, and i haven't got a straight answer.
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Old 11-16-05, 12:41 PM   #2
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I always thought they were for blowing through onto the rubber solution when on the inner tube to dry it off more quickly before putting on the patch
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Old 11-16-05, 12:43 PM   #3
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I always thought they were for smoothing the rubber cement, although I've never tried it...
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Old 11-16-05, 12:47 PM   #4
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They were for the Dunlop type valves that I had on my first bikes in the 1940s. I think there are still plenty of bikes in the 3rd world with those valves.
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Old 11-16-05, 12:54 PM   #5
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What exactly do the leetle rubber tubes do to/with the dunlop valves?
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Old 11-16-05, 12:55 PM   #6
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i heard the blowing thing too, but it seemed kind of hokey
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Old 11-16-05, 02:01 PM   #7
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Quote:
Originally Posted by BostonFixed
What exactly do the leetle rubber tubes do to/with the dunlop valves?
AndrewP is probably right - the early Dunlop valves were just a rubber tube inside the metal valve bit- same principle as a heart valve they let air in but collapsed to prevent air from coming out
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Old 11-16-05, 02:27 PM   #8
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Quote:
Originally Posted by royalflash
AndrewP is probably right - the early Dunlop valves were just a rubber tube inside the metal valve bit- same principle as a heart valve they let air in but collapsed to prevent air from coming out
My curiosity led me to google "Dunlop valve", and this page came up:

It details the history, construction, etc. of a dunlop valve and it shows the rubber tube thingy.

http://www.flying-scot.co.uk/components/woods.html

AndyP was right.
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Old 11-16-05, 03:14 PM   #9
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great, now i can out bike dork the bike dorks
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Old 11-16-05, 03:28 PM   #10
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Learn something new every day. I figured it was for spreading the rubber cement around too.

Steve W.
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Old 11-16-05, 04:28 PM   #11
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I thought it made sniffing the glue easier.
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Old 11-16-05, 05:30 PM   #12
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I used it to smear the glue around when I patched a tube last night.
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Old 11-16-05, 11:43 PM   #13
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Originally Posted by erok
great, now i can out bike dork the bike dorks
Not likely. There's always someone with a more arcane factoid
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Old 11-17-05, 02:09 AM   #14
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Quote:
Originally Posted by AndrewP
They were for the Dunlop type valves that I had on my first bikes in the 1940s. I think there are still plenty of bikes in the 3rd world with those valves.
In the third world? I don't think Japan is a third world country and I would say as a guess 95% of bikes here use them. Probably more.
Steve.
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Old 11-17-05, 02:18 AM   #15
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In the third world? I don't think Japan is a third world country and I would say as a guess 95% of bikes here use them. Probably more.
Steve.
Relax. I'm well aware that Japanese bikes use them. He wasn't dissing Japan in the slightest. Dunlop / Woods valves aren't as common in North America or most of Europe as they are in Asia.
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Old 11-17-05, 02:32 AM   #16
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Quote:
Originally Posted by Raiyn
Relax. I'm well aware that Japanese bikes use them. He wasn't dissing Japan in the slightest. Dunlop / Woods valves aren't as common in North America or most of Europe as they are in Asia.
I've relaxed.
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Old 11-17-05, 08:40 PM   #17
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haha +1
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Old 11-17-05, 10:17 PM   #18
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Quote:
Originally Posted by Avalanche325
I thought it made sniffing the glue easier.


My Joe Blow Pro floor pump, BTW, has and adapter for Dunlop valves. Never seen one, or even knew what they were, but now I know ("and knowing is half the battle" - GI Joe ).
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