Cut tyre, yay, nay?

ugo.santalucia

Found a large cut in my rear tyre, it seems to only affect the rubber, the casing underneath is intact. I have patched it inside with a Park tyre booth, no bulging... what do you think... safe to ride?

johngti

Use some super glue to join the edges maybe. I’d probably use it after that.

darkhairedlord

No worse than usual winter cuts. Keep an eye on it in case a piece of glass or flint goes in there?
Someone needs to come up with a vulcanising patch for the outside of tyres...

imposter2.0

in the bin...life's short enough as it is...

ugo.santalucia

imposter2.0 said:

in the bin...life's short enough as it is...

Dunno, the casing is completely intact, so the tyre shouldn't have lost any strength... morover, it's the rear... even if it was to deflate, it would be an inconvenience, rather than a real danger... I wouldn't use it as a front tyre.

N0bodyOfTheGoat

I'd use it if superglue reduces size of open split.

oxoman

Glue it outside decent patch inside and ride. Rear only and keep an eye on it would be my suggestion

ugo.santalucia

Superglue won't do anything, it will just form a hard plug which will come off quickly at best or pierce through the cotton casing at worst...

As above, a shame there is no soft material that can be applied and cured to fix those issues...
Or maybe there is but I don't know how to find it.
Once I had a Corsa tubular fixed and Peter Burgin plugged the cut with something like that... wish I knew what... sadly he died the day after fixing my tyre...

joe2019

I'd only ride that if it were glued to my rim.

oxoman

You can get a superglue just for rubber rather than just generic superglue that goes hard and used for mainly hard plastics.

ugo.santalucia

oxoman said:

You can get a superglue just for rubber rather than just generic superglue that goes hard and used for mainly hard plastics.

I might look into that

johngti

This seems to do the trick. Doesn’t get hard like normal superglue anyway...

oxoman

From memory I think loctite 406 is the generic one everybody uses.

brundonbianchi

That’s a Vittoria Corsa if I’m not mistaken. They are pretty much bomb proof. Glue it, it will be fine.

schlepcycling

I've used Shoe Goo in the past to fill small cuts works quite well https://www.amazon.co.uk/Original-Shoe-Goo-CLEAR-110ml/dp/B000BQR55G

Charlie_Croker

OT: superglue or cyanoacrylate to use the correct name would be fine for the short term/quick fix. However it is not waterproof, despite being activated by the moisture in the air. Constant exposure to water (ie rain) and the bonds will breakdown.

Rubber solution maybe a better alternative, though I really don’t anything about its chemistry. Shoe Goo might also work as schlepcycling says, but if your going to that sort of expense for a tiny repair you may as well bite the bullet and replace the tyre. If you do decide to glue it, just keep an eye on it, make sure it doesn’t grow

ugo.santalucia

I might get the Goo and use it to fix my walking boots too that are dying... that would justify the outlay

imposter2.0

ugo.santalucia said:

imposter2.0 said:

in the bin...life's short enough as it is...

Dunno, the casing is completely intact, so the tyre shouldn't have lost any strength... morover, it's the rear... even if it was to deflate, it would be an inconvenience, rather than a real danger... I wouldn't use it as a front tyre.

Your call. The chances of picking up a puncture through that gap are obviously small, but you can see the shape is no longer uniform. Plus whatever glue you use is unlikely to hold for long anyway.

masjer

I've used tyre repair patches on large cuts before. They are reinforced (so highly puncture resistant) and form a permanent bond using vulcanising cement (puncture glue).

https://ebay.co.uk/itm/Round-45mm-Tyre-Puncture-Repair-Patches-Pack-Of-25/131940131597?hash=item1eb83ea30d:g:xn0AAOSwAuZX2tWM

dowtcha

if it was me that tyre would be going in the bin. That's a big cut, I would not risk it myself. I have used shoe goo and it never lasts very long before its worn way and the slit reopens.

First.Aspect

imposter2.0 said:

ugo.santalucia said:

imposter2.0 said:

in the bin...life's short enough as it is...

Dunno, the casing is completely intact, so the tyre shouldn't have lost any strength... morover, it's the rear... even if it was to deflate, it would be an inconvenience, rather than a real danger... I wouldn't use it as a front tyre.

Your call. The chances of picking up a puncture through that gap are obviously small, but you can see the shape is no longer uniform. Plus whatever glue you use is unlikely to hold for long anyway.

Ignore (usually a reasonable default position).

I'd put a couple of strip of duct tape on the inside, shoe glue on the outside and forget about it. If I replaced every tyre that cut like that in the winter I'd spend more on my bike than my mortgage.

imposter2.0

First.Aspect said:

imposter2.0 said:

ugo.santalucia said:

imposter2.0 said:

in the bin...life's short enough as it is...

Dunno, the casing is completely intact, so the tyre shouldn't have lost any strength... morover, it's the rear... even if it was to deflate, it would be an inconvenience, rather than a real danger... I wouldn't use it as a front tyre.

Your call. The chances of picking up a puncture through that gap are obviously small, but you can see the shape is no longer uniform. Plus whatever glue you use is unlikely to hold for long anyway.

Ignore (usually a reasonable default position).

I'd put a couple of strip of duct tape on the inside, shoe glue on the outside and forget about it. If I replaced every tyre that cut like that in the winter I'd spend more on my bike than my mortgage.

Then of course, there are always scunthorpes like this, who would rather bodge it, than do a proper job.

First.Aspect

imposter2.0 said:

First.Aspect said:

imposter2.0 said:

ugo.santalucia said:

imposter2.0 said:

in the bin...life's short enough as it is...

Dunno, the casing is completely intact, so the tyre shouldn't have lost any strength... morover, it's the rear... even if it was to deflate, it would be an inconvenience, rather than a real danger... I wouldn't use it as a front tyre.

Your call. The chances of picking up a puncture through that gap are obviously small, but you can see the shape is no longer uniform. Plus whatever glue you use is unlikely to hold for long anyway.

Ignore (usually a reasonable default position).

I'd put a couple of strip of duct tape on the inside, shoe glue on the outside and forget about it. If I replaced every tyre that cut like that in the winter I'd spend more on my bike than my mortgage.

Then of course, there are always scunthorpes like this, who would rather bodge it, than do a proper job.

You seem to be in a minority of 1.

joe2019

First.Aspect said:

imposter2.0 said:

First.Aspect said:

imposter2.0 said:

ugo.santalucia said:

imposter2.0 said:

in the bin...life's short enough as it is...

Dunno, the casing is completely intact, so the tyre shouldn't have lost any strength... morover, it's the rear... even if it was to deflate, it would be an inconvenience, rather than a real danger... I wouldn't use it as a front tyre.

Your call. The chances of picking up a puncture through that gap are obviously small, but you can see the shape is no longer uniform. Plus whatever glue you use is unlikely to hold for long anyway.

Ignore (usually a reasonable default position).

I'd put a couple of strip of duct tape on the inside, shoe glue on the outside and forget about it. If I replaced every tyre that cut like that in the winter I'd spend more on my bike than my mortgage.

Then of course, there are always scunthorpes like this, who would rather bodge it, than do a proper job.

You seem to be in a minority of 1.

or 2

imposter2.0

joe2019 said:

First.Aspect said:

imposter2.0 said:

First.Aspect said:

imposter2.0 said:

ugo.santalucia said:

imposter2.0 said:

in the bin...life's short enough as it is...

Dunno, the casing is completely intact, so the tyre shouldn't have lost any strength... morover, it's the rear... even if it was to deflate, it would be an inconvenience, rather than a real danger... I wouldn't use it as a front tyre.

Your call. The chances of picking up a puncture through that gap are obviously small, but you can see the shape is no longer uniform. Plus whatever glue you use is unlikely to hold for long anyway.

Ignore (usually a reasonable default position).

I'd put a couple of strip of duct tape on the inside, shoe glue on the outside and forget about it. If I replaced every tyre that cut like that in the winter I'd spend more on my bike than my mortgage.

Then of course, there are always scunthorpes like this, who would rather bodge it, than do a proper job.

You seem to be in a minority of 1.

or 2

Three including Dowtcha, above. As well as being a clueless bodger, it seems F-A is also numerically challenged. I didn't realise it was a poll though...

First.Aspect

I remember now, this is a primary school playground. If you shout loudly you must be right.

Ugo, save your money. You are smart enough to assess the risks, which are low.

ugo.santalucia

First.Aspect said:

I remember now, this is a primary school playground. If you shout loudly you must be right.

Ugo, save your money. You are smart enough to assess the risks, which are low.

The main risk is being stranded if it punctures and ruptures at that point. I'll probably try it out on some short rides and see if I get to trust it... if not, I'll bin it... it's mostly peace of mind... if you don't trust it, that'll just spoil your time on the bike.

I've got a 10 TT at Mallory Park next Sunday... seems the perfect day for it...

First.Aspect

ugo.santalucia said:

First.Aspect said:

I remember now, this is a primary school playground. If you shout loudly you must be right.

Ugo, save your money. You are smart enough to assess the risks, which are low.

The main risk is being stranded if it punctures and ruptures at that point. I'll probably try it out on some short rides and see if I get to trust it... if not, I'll bin it... it's mostly peace of mind... if you don't trust it, that'll just spoil your time on the bike.

I've got a 10 TT at Mallory Park next Sunday... seems the perfect day for it...

That's what those tubeless patches prevent. Oddly enough, duct tape, having fabric in it, has a fairly high tensile strength and achieves much the same thing when pressed against the tyre by 90 odd psi.

But if you've felt the carcass and it doesn't feel compromised, and bearing mind that the tread isn't significantly structural, then the cut itself isn't a safety issue, except.for the chance of another object penetrating that cut. Super glue chemically bonds, and although is brittle the surrounding rubber is resilient enough that the glue tends to hold. That's why people use it.

imposter2.0

First.Aspect said:

I remember now, this is a primary school playground. If you shout loudly you must be right.

Ugo, save your money. You are smart enough to assess the risks, which are low.

Nobody is shouting, you chump. Ironically, you kicked it off by suggesting my advice to Ugo should be ignored, when I'd already told him it was 'his call'. You then compounded it by counting up the number of people who you thought didn't agree with me. You got that wrong as well.

First.Aspect

imposter2.0 said:

First.Aspect said:

I remember now, this is a primary school playground. If you shout loudly you must be right.

Ugo, save your money. You are smart enough to assess the risks, which are low.

Nobody is shouting, you chump. Ironically, you kicked it off by suggesting my advice to Ugo should be ignored, when I'd already told him it was 'his call'. You then compounded it by counting up the number of people who you thought didn't agree with me. You got that wrong as well.

You are making it too easy.

imposter2.0

That comment doesn't seem to relate to any reply in particular. You seem to enjoy having your pants pulled down in front of everyone. Unfortunately, I'm busy tonight...