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The "p"-word and wet weather
So I went out for a ride this morning, it was wet
and I got three flats in less than 30km. It's been months since I last had one. So what is it about wet weather that seems to bring out the higher flatting rate? On the weekend (also wet) I noticed more riders than usual on the side of the road with a wheel off. I have four possible mechanisms: 1. Rain washes more puncture causing material onto the path/side of road for us to run over. 2. A wet road/path makes it harder to see glass/nails so harder for us to avoid. 3. Wet tyres mean that debris sticks to the tyre giving it more chance to work in as we ride 4 (This one's a bit out there...) In the wet, it's easier for glass shards/nails/metal bits to stick up in the air rather than lie flat on the road. This makes them more likely to cause a flat. Confession: my third flat was due to tyre not correctly installed - there was a bang as the protruding tube went past it's Hookian limit. Remarkably, the wheel did not go flat - the bead closed off the hole enough to ride the bike a few kms to cafe for spouse to pick me up... DeF. -- e-mail: d.farrow@your finger.murdoch.edu.au To reply, you'll have to remove your finger. |
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The "p"-word and wet weather
DeF Wrote: I have four possible mechanisms: 1. Rain washes more puncture causing material onto the path/side of road for us to run over. 2. A wet road/path makes it harder to see glass/nails so harder for us to avoid. 3. Wet tyres mean that debris sticks to the tyre giving it more chance to work in as we ride 4 (This one's a bit out there...) In the wet, it's easier for glass shards/nails/metal bits to stick up in the air rather than lie flat on the road. This makes them more likely to cause a flat. Confession: my third flat was due to tyre not correctly installed - there was a bang as the protruding tube went past it's Hookian limit. Remarkably, the wheel did not go flat - the bead closed off the hole enough to ride the bike a few kms to cafe for spouse to pick me up... DeF. e-mail: d.farrow@your finger.murdoch.edu.au To reply, you'll have to remove your finger. 5. The water provides a bit of lubrication making it easier for glass etc. to slide into tyre and penetrate tube. Rory.w -- Rory Williams |
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The "p"-word and wet weather
On 2007-05-02, DeF (aka Bruce)
was almost, but not quite, entirely unlike tea: Confession: my third flat was due to tyre not correctly installed - there was a bang as the protruding tube went past it's Hookian limit. Remarkably, the wheel did not go flat - the bead closed off the hole enough to ride the bike a few kms to cafe for spouse to pick me up... Moral to the story: don't repair tyres. I hated when you realise your tyre is slowly going flat, but over some distance. So you pull up, yank out the nail or 3 corner jack, and then watch as the tyre goes "floop". If I happen to have left my spare tubes/kit at home that day, I fortunately learnt to stop doing such silly things as pulling out the nail, when I was about 15. -- TimC E = MC ** 2 +- 3db |
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The "p"-word and wet weather
DeF wrote:
I couldn't put it better than Jobst Brandt: "Glass is visible on roads by its shiny splinters and shards as well as not being the same color as the road. When wet from rain, these characteristics vanish and leave glass looking like any bit of gravel. Not only is it "invisible" but it is lubricated and cuts through rubber effortlessly. A convincing experiment is to cut a thick rubber band with a razor, first dry, then wet." http://draco.acs.uci.edu/rbfaq/FAQ/9.42.html John |
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The "p"-word and wet weather
On May 2, 2:04 pm, Rory Williams Rory.Williams.2px...@no-
mx.forums.cyclingforums.com wrote: 5. The water provides a bit of lubrication making it easier for glass etc. to slide into tyre and penetrate tube. Not just a bit.. alot. 1/ Try slicing a tyre with a knife. 2/ Repeat with a wet knife. 3/ Compare. |
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The "p"-word and wet weather
I've had 3 punctures in the past 2 weeks. Prior to that I hadn't had a puncture for over a year. -- jazmo |
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The "p"-word and wet weather
"jazmo" wrote in message ... I've had 3 punctures in the past 2 weeks. Prior to that I hadn't had a puncture for over a year. -- jazmo As Murphy's LAw dictates, I was thinking at the start of last week I had not had a puncture for a while. So, on the way home my rear goes mushy and I pull out a 3cm length of fencing wire. It looked like a nail had stick in my tyre...dead centre of a knobby bit of tread. What gets me is how something like that can get stuck in the tyre at a 90 degree angle to the road...it's not like the road is covered with spikes. Grrr. At least my spare tube and pump were handy. |
#8
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The "p"-word and wet weather
On Wed, 02 May 2007 14:04:33 +1000, TimC wrote:
I hated when you realise your tyre is slowly going flat, but over some distance. So you pull up, yank out the nail or 3 corner jack, and then watch as the tyre goes "floop". If I happen to have left my spare tubes/kit at home that day, I fortunately learnt to stop doing such silly things as pulling out the nail, when I was about 15. Parbs, is the story about you and the nail online anywhere, or do you have to go through your mail archive? -- Dave Hughes | O Canada, we stand ready to sit down and discuss our problems in a civilized fashion for thee. -- wednesday |
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The "p"-word and wet weather
Dave wrote:
On Wed, 02 May 2007 14:04:33 +1000, TimC wrote: I hated when you realise your tyre is slowly going flat, but over some distance. So you pull up, yank out the nail or 3 corner jack, and then watch as the tyre goes "floop". If I happen to have left my spare tubes/kit at home that day, I fortunately learnt to stop doing such silly things as pulling out the nail, when I was about 15. Parbs, is the story about you and the nail online anywhere, or do you have to go through your mail archive? Nope, but Steve has a picture http://svana.org/photos/ade2006/websize/img_1915.jpg That drawing pin probably did another 100km of riding or so after being reinserted into the tyre. Parbs - now with goop |
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