Disappearing rubber cement/glue for p*&%tures

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Chris S

Legendary Member
Location
Birmingham
And you're claiming that process continues back into the tube in some sort of self-sustaining way even when it's no longer in contact with the inner tube?
No - a chemical reaction starts which continues back into the tube. Consequently the solvent is weaker and sometimes completely ineffective the next time it's used.
 

mjr

Comfy armchair to one person & a plank to the next
No you just make sure that the tube doesn't come in contact with the rubber. The instructions usually state this.
I don't remember any such warning in the various kits I have used (from memory, Weldtite, Rema, Blackspur, fwe and half odds amongst others), nor in their videos such as:

View: https://www.youtube.com/watch?v=VmaEcwr2Ll8


I'll try to remember to grab a kit or two off the shelf when I get home this evening and look for it.
 

mjr

Comfy armchair to one person & a plank to the next
I'll try to remember to grab a kit or two off the shelf when I get home this evening and look for it.
I only found one (I wonder who finished the previous one), an unbranded one that I think was from Aldi. It doesn't have any instructions with it and the warnings on the tube are "Highly Inflammable [repeated in four other languages]. KEEP AWAY FROM CHILDREN. FLAMMABLE: Harmful or fatal if swallowed. Use under well-ventilated conditions. Keep away from heat and open flame. FIRST AID TREATMENT: Contains petroleum distillate. If swallowed, do not induce vomitting. If asphixia overcome by fumes, give patient air, call physician immediately."

Nothing about not touching the inner tube. It seems it's time to buy another kit, although this one is unopened.
 
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Nigeyy

Nigeyy

Legendary Member
Ha! Back to try to fix this problem. I was at my workbench after I posted this, looking down at the remains of about five p^&*ture repair kits, all brimming with patches, sandpaper, etc, but each now missing a tube of glue. When I had a thought.... what if I could get a big pot of glue, and refillable squeezy tubes? Surely it's worth a go....

And behold, thanks to the wonders of a website named after a large South American river, I was able to purchase a pot of rubber cement, as well as a dozen refillable lip balm tubes, all for around 12 quid. Worst case scenario? This doesn't work, but all I've really wasted is the 4 quid on the refillable squeezy tubes as I'll use the rubber cement instead of breaking into the puncture repair kits!
25304436910_89e2b03cfd_k.jpg


If you look at the photo, note the empty tube to the bottom left, with a top just to the right of it (and you can't see it easily but it has a point that goes into the tube top that is the dispenser just to its right to help seal it). Also there is my first tube filled with rubber cement (done by using a straw with my finger tip over the top once there is glue in the straw and then removed when the straw is inside the fillable tube. And just to finish things off:
25304436720_acf600ec07_k.jpg


I wrapped the tube with insulation tape to help seal it (though actually I'm not even sure I need this judging by the feel of the seal). Battery is there to give you an idea of the size of the tube.

OK, the good things: i. I can now see the rubber cement in the tube -if it magically disappears, at least I'll bloody well know now instead of have the frustration of squeezing and squeezing a tube with nothing coming out..... ii. the money I spent on it was the cost of around 5-6 repair kits, and I reckon if this works, this will last for 20 kits (risk vs reward) plus I'll still have plenty of glue for when I repair my tubes in the comfort of my basement..

Here's hoping it works!
 

summerdays

Cycling in the sun
Location
Bristol
I was clearing through a box yesterday and ended up throwing out two hollow tubes so the rubber/glue fairy has struck here too! Normally the ones in the little boxes are fine, these wee from larger tubes of glue.
 

BEHMOTH66

Active Member
There is no reason that a bit of rubber from the inner tube will start a reaction. The compound is gum rubber and solvents. the solvents melt the rubber on the tube and the patch allowing them to bond the extra bit of rubber in the glue helps that bond to stick and closes any potential gaps in the bonding process.
If any of the rubber got into the tube it would simply dissolve in the solvent. it is not a catalyst that start a reaction and allows the oxidation of the entire tube
 
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Ajax Bay

Guru
Location
East Devon
This is not worth arguing/chatting about (IMO). It doesn't matter if the tip of the tube makes contact with the inner as the glue being squeezed out is going 'forward' onto the inner. But suggest what @Chris S is saying is true too, so don't finish off the 'putting glue on' phase by wiping off the end of the tube on the (rubber) inner. The last bit of glue (which has never touched rubber) can stay there, tube top screwed back on tight, and hopefully there will be some there the next time it's needed.
If you're going to carry glue (as well as glueless patches) for that multiple experience which rarely occurs (mind the lanes when the farmer's been out trimming the blackthorn hedges), it makes sense to take a small unopened tube. It is rarely needed. If you're a pessimist or in wild country, carry two spare tubes.
 

Dogtrousers

Kilometre nibbler
@Nigeyy if you need that much glue, you must have a serious puncture problem. Or perhaps a glue problem.
 

steveindenmark

Legendary Member
It's a good point but I can't find good reviews for self adhesive patches -at least over here (my friend also had bad experiences). Add in the fact I know these work!

I have never had any problems with the self adhesive patches I buy. The rubber is thick and they never leak. Using rubber glue and patches seems like the dark ages now.
 
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Nigeyy

Nigeyy

Legendary Member
@Nigeyy if you need that much glue, you must have a serious puncture problem. Or perhaps a glue problem.

I have 10 bikes.... I don't spend much money on anything else..... I want the luxury of having a multitool, bandana, spare inner tube and working repair kit in a bag for each bike. That way depending on which bike I choose that day, I just take it and go.
 
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