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Frequent flats

Old 08-20-08, 12:51 PM
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Frequent flats

ive only been riding a road bike for about a month now but ive already gone through 7 or 8 tubes because of punctures. i have bontrager hard case tires along w/ some silicon-ish lining which is designed to prevent punctures. youd think these two things together would prevent any punctures at all, yet i still end up w/ a flat too frequently to even have fun riding my bike. the tires are always filled between 100 and 110 psi. i mainly ride on paved bike trails but am afraid flats might become an everyday thing once i move back to the city in 3 weeks. am i the only one that gets flats so often? whats wrong?
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Old 08-20-08, 01:08 PM
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There are a couple things to ask...

-Do you find thorns/debris in your tire when you've flatted? if not, you're probably not getting punctures, but some kind of pinch flat. I've read on here that those silicone liners can give the tube an opportunity to get in between and be pinched, by simply riding.

I've been riding Michelin Krylion carbon tires, which are similar to the hard cases probably....and have had probably 1 flat in the last 7-8 months. Just doesn't really happen to me.

-Do you ever wipe debris off of your tires after you've ridden though a bad patch? Every time I ride through bad debris/glass etc...I drag my fingers lightly on both front and rear tires to knock off any 'clingers.'

I would be truly surprised if your 8 flats in a month have been true punctures. UNLESS you're not checking the inside of your tire casing and leaving whatever flatted you the first time in there to puncture your new tube upon installation. That would be a serious oversight on your part, and would require immediately adding that step to each tire repair. I run my fingers aroud the tire a few times, sometimes removing the tire completely from the rim in order to check both sides.

Also, inspecting the rim/rim-tape as well in the same way. Make sure you don't have any spoke holes exposed, or anything else in the rim that could cause a repeat puncture.

Tubes can get expensive if your careless about them. I patch mine until I've got 4-5 patches on a tube before tossing away, or swapping out to use on my commuting bike.

Oh, and there are some tricks to make sure you won't immediately ruin a new tube during installation, like pumping just enough air into the tube to cause it to hold it's shape during install. This will allow the tube to kind of 'pop' up into the tire during installation and stay away from the bead while you're pushing the tire back onto the rim and inflating it. Do some searching around the forums, plenty of good advice in older threads. Good luck.....

And to answer your question.....It's NOT normal to flat that often.

-Jeremy
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Old 08-20-08, 01:13 PM
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Is this a thread for us to support you on getting new tires?

Get new tires.
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Old 08-20-08, 01:48 PM
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Look at your old tubes. Figure out what caused the flat. Only then can you figure out how to prevent the next one. Repeated flats are usually caused by one of:
1. a thorn or piece of glass in your tube
2. a sharp edge or loose spoke in your wheel
3. sloppy tire mounting technique
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Old 08-20-08, 01:52 PM
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Check to see if you're flatting in the same place every time. If you are, check your rim tape. Also check to see if debris is stuck in the tire.
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Old 08-20-08, 02:11 PM
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Is it the same tire always flatting or split between the front and rear? If it's only one, I'd replace that tire. That sucks to flat so much.
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Old 08-20-08, 02:29 PM
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its happened both front and back. both rim tapes have been replaced. new hard case tires were put on when the bike was bought so those are only a month old.
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Old 08-20-08, 02:41 PM
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You may be new enough to riding, you may not have gained enough knowledge to understand the advice given. Just in case, here's the advice in more basic terms.

Alway check to see why you got a flat and where. The best way to do this is carefully pull the tube out from the tire, carefully noting when the stem is in relation to the tire that's still on the rim. Inflate the tube and note where the hole is from the air leaking. Now match the hole up to the tire. If the hole is towards the inside (rim side), you have a problem with a spoke or the rim tape. If the hole is on the tire side, carefully check the tire in that exact spot. You may have a sliver of metal, a thorn, or a small piece of glass embedded. What happens if you patch or replace the tube is another flat later as the debris works it's way back into the tube. It could happen immediately or 100 miles later. So always find the cause of the flat.
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Old 08-20-08, 03:16 PM
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>ive only been riding a road bike for about a month now but ive already gone through 7 or 8 tubes because of punctures.<

1) Are you having such catastrophic blowouts that you can't patch the tubes? Or do you prefer to simply use new ones each time you flat?

>i mainly ride on paved bike trails<

2) I'm going to guess this is your problem. On a bike path, debris will stay where it lays. On the road, debris, with the help of passing vehicles, tends to blow toward the curbs. And while cyclists ride to the right (at least in the U.S.), we ride far enough away from the curb to stay away from debris that could cause a puncture.

You've got a road bike and when you start riding on city streets, I think you'll find your problem will disappear.
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Old 08-20-08, 03:31 PM
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if the tubes have a split or two small holes next to each other, you could be getting pinch flats. when you install the tube, put like 15-20 psi in and then go around the wheel with your hands and work the tire back and forth on the rim all the way around to seat the tube and the bead. then pump to your desired psi.
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Old 08-16-17, 11:05 AM
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Use stop flats liners
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Old 08-16-17, 11:19 AM
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This is the fifth ancient thread dug up by @gnarkill283 where he has responded with the exact same words.
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Old 08-16-17, 11:21 AM
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Originally Posted by TimothyH
This is the fourth ancient thread dug up by @gnarkill283 where he has responded with the exact same words.
sorry but I just want to post a link so I can get some feedback and it won't allow me until I make 10 posts. I thought I could be of help rather than just make 10 nonsensical posts
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Old 08-16-17, 02:04 PM
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Originally Posted by gnarkill283
sorry but I just want to post a link so I can get some feedback and it won't allow me until I make 10 posts. I thought I could be of help rather than just make 10 nonsensical posts
I just make nonsensical posts.
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Old 08-16-17, 02:43 PM
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Originally Posted by RPK79
I just make nonsensical posts.


Speaking of which, the OP's symptoms sound like sabotage. Maybe bad karma.


PS: seriously...
Get new name brand tires with decent flat protection. No liners.
Check your rim strips
Run butyl tubes
Keep pressure up


You should be fine.
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Old 08-16-17, 03:58 PM
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Originally Posted by StanSeven
You may be new enough to riding, you may not have gained enough knowledge to understand the advice given. Just in case, here's the advice in more basic terms.

Alway check to see why you got a flat and where. The best way to do this is carefully pull the tube out from the tire, carefully noting when the stem is in relation to the tire that's still on the rim. Inflate the tube and note where the hole is from the air leaking. Now match the hole up to the tire. If the hole is towards the inside (rim side), you have a problem with a spoke or the rim tape. If the hole is on the tire side, carefully check the tire in that exact spot. You may have a sliver of metal, a thorn, or a small piece of glass embedded. What happens if you patch or replace the tube is another flat later as the debris works it's way back into the tube. It could happen immediately or 100 miles later. So always find the cause of the flat.
Well said, but you omitted puncture on the side of the tube, most likely pinch flat or flats from catching the tube between the tire bead and the rim wall/floor. OP check for that too.
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Old 08-17-17, 05:15 AM
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OP's most recent post was in January, 2009
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Old 08-17-17, 05:31 AM
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There's only four reasons for flats:
1. An individual tire's manufactured flaw or wear
2. Pinch flats caused by incorrect inflation,
3. Thorns, debris, or other puncture issues,
4. Rim or similar puncture problems.

So,
1. Given that you got flats on both tires, this is not the cause.
2. Assuming you actually inflated properly, this is not the cause.
3. If no one else is getting flats and you've checked the tires for debris, this is not the cause.
4. This is my choice. Look at how you're replacing tubes and tires. My guess is that tires are not put on properly.
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Old 08-17-17, 06:13 AM
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Originally Posted by seedsbelize
OP's most recent post was in January, 2009
On deaf ears, my friend.
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Old 08-17-17, 06:22 AM
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Originally Posted by seedsbelize
OP's most recent post was in January, 2009
He stopped getting flats.
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Old 08-23-17, 12:14 PM
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Originally Posted by gnarkill283
sorry but I just want to post a link so I can get some feedback and it won't allow me until I make 10 posts. I thought I could be of help rather than just make 10 nonsensical posts
The rule is to foil spammers, spammer. Maybe it should be 50 posts.
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Old 08-23-17, 12:39 PM
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One word, TUBELESS!
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Old 08-24-17, 09:56 AM
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Originally Posted by dvdslw
One word, TUBELESS!
They didn't have road tubeless 9 years ago.
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Old 08-24-17, 10:04 AM
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Originally Posted by nycphotography
They didn't have road tubeless 9 years ago.
Actually Shimano + Hutchinson released Road Tubeless in 2006.
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Old 08-24-17, 02:02 PM
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Yanno, even as I typed it.... lol
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