Repairing punctured UST tyres

[jugheaddave]

I rode over a pallet once, and had a huge nail through my tyre.

 

Stans sealed the Tyre. (although I did have to ad a little  ore air.)

 

[HowellingWulf]

...might be a silly question, but what is OKO?

I have a big sidewall cut (8-10mm) on my Specialized Captain Control tyre. Plug seems to hold fine, for know. Would you recommend I rather seal it from the inside with an old inner tube and some rubber cement or should I just leave the plug?

[rad006]

OKO is a tyre punture preventitive sealant that claims it doesnt dry up compared to the others, so lasts the lifetime of the tyre. 

[Jules]

Rad, are you allowed to use the "O" word now?

 

 

 

I've had mixed success with plugs. I've found a few i've put in have fallen out. I asked my bike shop what to do, and they suggested this method, which works for me:

 

 

 

Take off tyre, clean around hole very well, sand a little. Put glue. light it, blow it out, light it, blow it out and so on. Apparently helps the vulcanisation. Put normal patch over hole. Put tyre back on, top up sealant and inflate. Bit of a mission, but at least it's a permanent solution.

[rad006]

Yes im allowed

[Jules]

Yes im allowed

 

 

 

Ah, I just remember your frantic post back in June

[rad006]

Lets just say bridges have been mended and now I get to sell all the products

[Mudsimus]

OKO is a tyre punture preventitive sealant that claims it doesnt dry up compared to the others' date=' so lasts the lifetime of the tyre. [/quote']

 

There is another product on the market that makes these claims. The problems with these products that "doesnt dry up" is that they are water based. A problem when you ride in water...seeing that it dissolves the sealant in previous sealed holes.

[rad006]

Well Ill test my tyres after this weekend at the Nandos Magalies ok. I hear there are a few water crossings

[Mudsimus]

No worries. It works..I use it. But you'll notice they reseal after they got wet. So you use more sealant than you normally would.

[rad006]

Interesting I will try spot this. I havent noticed any holes yet. Im actually really impressed so far...

[Brighter-Lights]

Rad' date=' are you allowed to use the "O" word now?

I've had mixed success with plugs. I've found a few i've put in have fallen out. I asked my bike shop what to do, and they suggested this method, which works for me:

Take off tyre, clean around hole very well, sand a little. Put glue. light it, blow it out, light it, blow it out and so on. Apparently helps the vulcanisation. Put normal patch over hole. Put tyre back on, top up sealant and inflate. Bit of a mission, but at least it's a permanent solution. [/quote']

 

Use the sticky automotive plugs. Tear them into thinner strips (a bit hard to do)

 

Cut them lengthwise in half.

 

Press until about 8mm of the plug ends are visable outside the tyre...

 

Now twist the plug tool (i.e. rotate it) so that the plug pieces on the inside gets twisted. Pull tool out.

 

Some tools have a very narrow fork and will pull the plug out with it... modify your tool to have at least a 2mm gap between forks....

 

Strips of tube also work, they will NEVER come out if you do it like this: 

 

STRETCH the strip of cut tube (cut different sizes) and hold the ends between your fingers while plugging. Insert plug into hole and release tube strip. It shrings back to normal size and sits tightly in hole.

 

I've plugged several SIDEWALLS on non ust tyres this way and it even held up in the thin sidewalls of a Python Air Light and a DTC Karma!

[Kranswurm]

OKO is a tyre punture preventitive sealant that claims it doesnt dry up compared to the others' date=' so lasts the lifetime of the tyre. [/quote']

Hulle lieg.

 

I use OKO and have done so for years.

You have to replenish now and again

It gets used up not dries up

[rad006]

Thanks Kranswurm for confirming that

[HowellingWulf]

Brighter-Lights
Firstly, Would you recommend not investing in plugs at all but rather buy a tub of rubber cement from Builder's and use old inner tubes and little bottles full of cement for rides?

Secondly, the Weldtite plugs are about R150 for a box of 3. You can get a box of 50 car plugs from Builders for the same price. Do they do they same job albeit a more labour intensive wrt plug preparation? Do you recommend using these and not use the "shredded inner tube method" at all?

[Brighter-Lights]

Brighter-Lights
Firstly' date=' Would you recommend not investing in plugs at all but rather buy a tub of rubber cement from Builder's and use old inner tubes and little bottles full of cement for rides?

Secondly, the Weldtite plugs are about R150 for a box of 3. You can get a box of 50 car plugs from Builders for the same price. Do they do they same job albeit a more labour intensive wrt plug preparation? Do you recommend using these and not use the "shredded inner tube method" at all?

[/quote']

 

I prefer the automotive plugs. I shred them into different thicknesses and keep the plug tool with an installed plug on my handlebar via velcro strap. If something happens I'm very quick to plug the hole.

 

I never use any rubber cement or glue. The automotive plugs are quite sticky to begin with, once it's plugged, the sealant will do the work.

 

I think rubber cement needs a few minutes of drying before surfaces are joined, so I'm not sure what happens on the inside once the uncured cement mixes with sealant.

 

The main reason I prefer the rope type material is because I've noticed that the tube starts deteriorating after time - i.e fine hairline cracks in the material.