Fixing flats, tubeless, plus hole-plugs and CO2 cylinders?

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Re: Fixing flats, tubeless, plus hole-plugs and CO2 cylinder

Post by amberwolf » Oct 25 2017 1:13am

Or wash them out; slime is water soluble.

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Re: Fixing flats, tubeless, plus hole-plugs and CO2 cylinder

Post by AZeBikeGuy » Oct 25 2017 9:08am

Baron wrote:....slime tubes in my experience always seem to clog up the shrader valve after about 6 months to a year. it becomes almost impossible to drain/add air to it. pumping it up seems to work up to a point, seemingly about 30 psi in mine. but the psi gauge is waaay off on my pump, probably because it has to fight so much harder to force air into there. so there's no way of knowing the exact psi in the tire. anyone have a fix for shrader valves getting clogged?
Just unscrew the core, clean it (or replace, they'll give you a handful at most tire shops) and clean the stem out with a pipe cleaner.

I've got fat tire tubes (4.7") with presta valves. I find slime very hit or miss and have since accepted the wisdom of others and converted to stan's. Haven't had a flat since and only check the air every month or two. I've literally gone through sets of tires with no flats and you all should see how many pokey things are in the tires/tubes when I replace them! Stan's is *much* more aggressive about clogging the valve though, especially a presta but it's no big deal to clean it out.

Slime sort of turns into a little fibrous ball - stan's is much more like rubber cement. Stan's is much more expensive and much nastier (use gloves and good ventilation!) but I find it's in a whole different world when it comes to sealing the tire up.

YMMV...

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Re: Fixing flats, tubeless, plus hole-plugs and CO2 cylinder

Post by chas58 » Oct 25 2017 4:54pm

Baron wrote: slime tubes in my experience always seem to clog up the shrader valve after about 6 months to a year. it becomes almost impossible to drain/add air to it. pumping it up seems to work up to a point, seemingly about 30 psi in mine. but the psi gauge is waaay off on my pump, probably because it has to fight so much harder to force air into there. so there's no way of knowing the exact psi in the tire. anyone have a fix for shrader valves getting clogged?
Yeah, you have to be meticulous about having the valve at the right position when inflating. Well, at least schrader valves are easy to unscrew and clean.

I used to use Slime, but it did not work at all with skinny high pressure tires (or pinch flats that skinny tires get).

I now use latex - Orange seal (which eliminates some of the problems stan has).

Slime does have the advantage that it will not dry out in a tube. Latex (like stans) needs to be refreshed every 6 months or so).
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Re: Fixing flats, tubeless, plus hole-plugs and CO2 cylinder

Post by AZeBikeGuy » Oct 25 2017 5:39pm

chas58 wrote:....Latex (like stans) needs to be refreshed every 6 months or so).
True that.... but my tires only last 8-9mo's so everything needs refreshed at that point :D

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Re: Fixing flats, tubeless, plus hole-plugs and CO2 cylinder

Post by wturber » Oct 26 2017 3:45am

Hmmmm ... just looked at that puncture tonight. It is much worse that I thought. This puncture is a cut is more than 1/4" long. I planned on replacing this rather cheap tire anyway, but will now do it sooner. I should probably patch the tire in the meantime though. The inner tube is causing this little slit to bulge. Not good.
puncture_20171026_013152_SM.jpg
puncture_20171026_013152_SM.jpg (217.26 KiB) Viewed 1443 times
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Re: Fixing flats, tubeless, plus hole-plugs and CO2 cylinder

Post by chas58 » Oct 26 2017 9:23am

wow, quite the slash. Impressive that the sealant plugged it.

Certainly you don't want dirt getting inside the tire or near the tube where abrasion could be a problem. that and you don't want that crack to grow.
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Re: Fixing flats, tubeless, plus hole-plugs and CO2 cylinder

Post by wturber » Oct 26 2017 12:34pm

chas58 wrote:wow, quite the slash. Impressive that the sealant plugged it.

Certainly you don't want dirt getting inside the tire or near the tube where abrasion could be a problem. that and you don't want that crack to grow.
Yeah. I was a bit surprised it was that big. Slime sealed it in a matter of seconds. You can hear it do so in the video. I think rotating the puncture down low helped. I got home on it and have made one more round trip on it (32 miles) and it has held fine. No loss in pressure beyond normal. But continuing to ride on it seems a bad idea. I'll patch the tire tonight and order some new, "real" tires as well.
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Re: Fixing flats, tubeless, plus hole-plugs and CO2 cylinder

Post by amberwolf » Oct 26 2017 1:41pm

It looks like a glass puncture; probably from a cube of automotive window glass.

Whenever I've had those (that slime could seal) the tire was badly sliced, but the tube just had a poke, sometimes two or three pinholes in a row.

The ones it couldn't seal were actual slices into the tube. Only thing I've ever gotten to seal those was an external patch of one type or another.

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Re: Fixing flats, tubeless, plus hole-plugs and CO2 cylinder

Post by wturber » Oct 27 2017 12:11pm

Turns out it was a slit about 3/16" long. Here's a photo of the slit and the fibrous "clot" that I squeezed out of it prior to patching.
20171027_000254_cr.jpg
20171027_000254_cr.jpg (147.2 KiB) Viewed 1412 times
20171027_000739_cr.jpg
20171027_000739_cr.jpg (139.48 KiB) Viewed 1412 times
"Commuter - DC Booster"
Iron Horse 3.0 hardtail - 48V / 1000W / 470rpm generic Chinese DD Hub motor (ebay)
8 x 36v 4.3ah 10s 2P battery packs - 1500W 30A DC Boost Converter delivers 54v and about 1000 watts peak
53T/42T Sakae Road cranks - 30mph+ on flats
viewtopic.php?f=2&t=90369

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Re: Fixing flats, tubeless, plus hole-plugs and CO2 cylinder

Post by fechter » Oct 27 2017 2:17pm

Looks like a booger.
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Re: Fixing flats, tubeless, plus hole-plugs and CO2 cylinder

Post by Drunkskunk » Oct 27 2017 6:51pm

that's impressive. I've pulled larger things out of my tubes and had them seal with slime, but they all left smaller actual holes.
How much pressure would you guess you still had in the tube?
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Re: Fixing flats, tubeless, plus hole-plugs and CO2 cylinder

Post by wturber » Oct 27 2017 7:57pm

Drunkskunk wrote:that's impressive. I've pulled larger things out of my tubes and had them seal with slime, but they all left smaller actual holes.
How much pressure would you guess you still had in the tube?
The tire probably was at about 60 psi when it punctured and probably had 15-20 psi when it sealed. I rode about two blocks on it and it was ride-able. But with about two miles to go, I decided to pump it up a bit - probably 40-50 psi with my (non-CO2) hand pump before going further. Later that day when I pumped it up a tad more for the ride home I noticed it had dripped out a couple drops of slime. But it was till holding pressure.

I too am surprised it sealed that kind of a slit. I doubt you could count on it to do that. I'm guessing that perhaps the slit in the tube misaligned a bit with the slit in the tire, slowing down the air escape and giving the clot a chance to form ... or not. Either way, it was nice that it worked given that a flat in the same tire had me walking about three miles a few days earlier.
"Commuter - DC Booster"
Iron Horse 3.0 hardtail - 48V / 1000W / 470rpm generic Chinese DD Hub motor (ebay)
8 x 36v 4.3ah 10s 2P battery packs - 1500W 30A DC Boost Converter delivers 54v and about 1000 watts peak
53T/42T Sakae Road cranks - 30mph+ on flats
viewtopic.php?f=2&t=90369

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Re: Fixing flats, tubeless, plus hole-plugs and CO2 cylinder

Post by markz » Oct 28 2017 9:30pm

Be nice rarely if ever get a flat. I'm gunna start a solid regiment of all the hints and suggestions layed out before us like tools for success.

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