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Tube patch - rubber cement question and warning.
Each of my bikes has a little patch kit, containing a few patches,
scraper, and a little container of rubber cement. One bike had a slow leak so I take out the tube, find the hole, scrape it, and prepare to apply the rubber cement, but the little container of cement is empty. I used it once, closed it, and it looks like there is cement in it but, no there isn't. I pull the patch kit out from another bike, and the rubber cement is also empty. Very weird. Both little containers look full, but each has been used once and there is no rubber cement left. Apparently rubber cement evaporates after you open the containe even if you close it tightly. And indeed, here is a comment from Amazon on using something called Bestine: http://www.amazon.com/Best-Test-Best.../dp/B000HF6UR0 5.0 out of 5 stars SOLVENT FOR RUBBER CEMENT November 10, 2011 By Victor J. Tennery Amazon Verified PurchaseIN MY WORK I USE A CONSIDERABLE AMOUNT OF RUBBER CEMENT - CONSTANT PROBLEM IS EVAPORATION OF THE CARRIER IN THE LITTLE BOTTLES - RATHER THAN DISCARD, YOU CAN SALVAGE USING THIS THINNER - CAN NOT BUY THIS ITEM LOCALLY - THIS SHIPMENT ARRIVED PROMPLY AND WAS IN PERFECT CONDITION. My neighbor had some rubber cement and I borrowed it and the patch worked fine, but now I need to get more patch kits. I think they do have some that don't use rubber cement but I don't know if those are as good. At least now I'm warned - I've been riding with patch kits that would be useless if needed. |
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#2
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Tube patch - rubber cement question and warning.
On Tue, 23 Oct 2012 18:43:07 +0100, Phil W Lee
wrote: dgk considered Mon, 22 Oct 2012 13:12:57 -0400 the perfect time to write: Each of my bikes has a little patch kit, containing a few patches, scraper, and a little container of rubber cement. One bike had a slow leak so I take out the tube, find the hole, scrape it, and prepare to apply the rubber cement, but the little container of cement is empty. I used it once, closed it, and it looks like there is cement in it but, no there isn't. I pull the patch kit out from another bike, and the rubber cement is also empty. Very weird. Both little containers look full, but each has been used once and there is no rubber cement left. Apparently rubber cement evaporates after you open the containe even if you close it tightly. And indeed, here is a comment from Amazon on using something called Bestine: http://www.amazon.com/Best-Test-Best.../dp/B000HF6UR0 5.0 out of 5 stars SOLVENT FOR RUBBER CEMENT November 10, 2011 By Victor J. Tennery Amazon Verified PurchaseIN MY WORK I USE A CONSIDERABLE AMOUNT OF RUBBER CEMENT - CONSTANT PROBLEM IS EVAPORATION OF THE CARRIER IN THE LITTLE BOTTLES - RATHER THAN DISCARD, YOU CAN SALVAGE USING THIS THINNER - CAN NOT BUY THIS ITEM LOCALLY - THIS SHIPMENT ARRIVED PROMPLY AND WAS IN PERFECT CONDITION. My neighbor had some rubber cement and I borrowed it and the patch worked fine, but now I need to get more patch kits. I think they do have some that don't use rubber cement but I don't know if those are as good. At least now I'm warned - I've been riding with patch kits that would be useless if needed. This is exactly the reason that if I have to open a tube of rubber solution on the road, I then swap it with a new one, and use the remainder at home (where I do most patching, as I also carry spare tubes, and encourage my children to as well). That way, if you get a 2nd flat on the road, the tube of rubber solution is a good new one (and the easiest way to tell if it is good is by weight). I can't seem to find replacement rubber cement for a patch kit. And yes, I do carry a spare tube. But I was pretty surprised to see that both patch kits were useless. |
#3
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Tube patch - rubber cement question and warning.
On Monday, October 22, 2012 10:12:58 AM UTC-7, dgk wrote:
Each of my bikes has a little patch kit, containing a few patches, scraper, and a little container of rubber cement. One bike had a slow leak so I take out the tube, find the hole, scrape it, and prepare to apply the rubber cement, but the little container of cement is empty. I used it once, closed it, and it looks like there is cement in it but, no there isn't. I pull the patch kit out from another bike, and the rubber cement is also empty. Very weird. Both little containers look full, but each has been used once and there is no rubber cement left. Apparently rubber cement evaporates after you open the containe even if you close it tightly. And indeed, here is a comment from Amazon on using something called Bestine: http://www.amazon.com/Best-Test-Best.../dp/B000HF6UR0 5.0 out of 5 stars SOLVENT FOR RUBBER CEMENT November 10, 2011 By Victor J. Tennery Amazon Verified PurchaseIN MY WORK I USE A CONSIDERABLE AMOUNT OF RUBBER CEMENT - CONSTANT PROBLEM IS EVAPORATION OF THE CARRIER IN THE LITTLE BOTTLES - RATHER THAN DISCARD, YOU CAN SALVAGE USING THIS THINNER - CAN NOT BUY THIS ITEM LOCALLY - THIS SHIPMENT ARRIVED PROMPLY AND WAS IN PERFECT CONDITION. My neighbor had some rubber cement and I borrowed it and the patch worked fine, but now I need to get more patch kits. I think they do have some that don't use rubber cement but I don't know if those are as good. At least now I'm warned - I've been riding with patch kits that would be useless if needed. Indeed, the volatile carrier for the rubber cement evaporates after the tube is opened and then left unused for a very long time. That is why you always carry an unused patch kit all the time. You put the one you used most recently in your garage tool kit and you can buy a LARGE tube of Rema rubber cement from your local bike shop. It too will evaporate but the tube is so large it takes years and years to become useless. There are glueless patches but they do not work well. You're usually lucky if you can patch a tube so that you have a lead slow enough to get home before using your last CO2. If you have a full size frame pump it helps but as I said, glueless patches simply aren't any good. What's more - tubes used to be nicely made and fairly smooth. Now their are mold seams everywhere so you have to be ultra-careful to really sand the area of the patch very well. Otherwise it's slow leak city. |
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