Vc4 cold vulcanizing compound

[Jeff B]

last weekend I cut a tire and got a slow leak in the side wall. After searching the googlez, I found this.

Vulcanizing Compounds



Busted Knuckle Off Road DIY Tire Vulcanizing Kit

I went ahead and ordered some. Anybody ever use it? any tips?

 

[Tim C]

I've used it before. You're going to want a patch on the inside to keep it air tight. then grind the sidewall hole open with a carbide Burr. Then mix up the compound and mash it into the sidewall till flush. That will fill the hole and protect and strengthen the patch.

I believe hot vulcanizing is much better or longer lasting. The tire I patched was a 42 with very limited on road use. I did run it 2 years but probably less than 400 miles total. It is currently my spare.

We called the rema compound cancer paste in my wheeling group. Mix it outdoors with sacrificial welding gloves. You'll never get the carbon black off your skin til it wears off and it has a big sheet of health warnings, LOL

 

[Tim C]

Actually I need to edit that. Grind the hole open with the Burr before nthe patch so you don't mess up the patch. You want the hole funnel shaped like a V. Also get a big enough patch to cover a bit around the hole. It's the seal and the strength from the cords that got cut or ground out.

 

[Jeff B]

Actually I need to edit that. Grind the hole open with the Burr before nthe patch so you don't mess up the patch. You want the hole funnel shaped like a V. Also get a big enough patch to cover a bit around the hole. It's the seal and the strength from the cords that got cut or ground out.

Thank you

 

[karatejosh]

Make sure you keep the tire at room temperate to cure for a few days if not it will mess ups the chemical reaction ask me how I know lol I also have a guy in va that will hot vulc if you need his info let me know he has done tons of tires for me and friends


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[Jeff B]

Make sure you keep the tire at room temperate to cure for a few days if not it will mess ups the chemical reaction ask me how I know lol I also have a guy in va that will hot vulc if you need his info let me know he has done tons of tires for me and friends


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I will be sure to bring it inside to do it. My wife is going to love me!

 

[karatejosh]

I will be sure to bring it inside to do it. My wife is going to love me!

Several of us have used it without a patch on the inside and it works just fine just push it thru from one side or the other and work it flat like a pancake


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[Tim C]

Several of us have used it without a patch on the inside and it works just fine just push it thru from one side or the other and work it flat like a pancake


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Good to know for the future. Mine had a 2" cut. I used the patch to hold the tire carcass back together.

 

[karatejosh]

Also use more of the blue primer then you think you need lol it will not stick to the tire at all unless you have that stuff on there


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[Jeff B]

Also use more of the blue primer then you think you need lol it will not stick to the tire at all unless you have that stuff on there


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I surely will spread it out along with the patch.


The cut is a couple about 2" and the leak is very slow.
I'll get some pics this weekend when I have time to get it off the wheel.

 

[karatejosh]

I surely will spread it out along with the patch.


The cut is a couple about 2" and the leak is very slow.
I'll get some pics this weekend when I have time to get it off the wheel.

You will have to make it a pretty big to fix it unfortunately you have to grind out all the cut part and kinda feather it out like you would to weld a crack in metal


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[karatejosh]

this is the last one I did just to give you an idea


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[paradisePWoffrd]

It's been a few years, but Aiken Black in hickory used to hot vulcanize tires. Just had to tell them it was offroad only.


I will be interested in how this works for you.

 

[GotWood]

You will have to make it a pretty big to fix it unfortunately you have to grind out all the cut part and kinda feather it out like you would to weld a crack in metal


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@Jeff B won't understand this concept

 

[Jeff B]

Well here it is. Not as pretty as the one in previous pics. We will see how it holds. Hole was size of my little finger.

 

[karatejosh]

Well here it is. Not as pretty as the one in previous pics. We will see how it holds. Hole was size of my little finger.

View attachment 308011

That stuff is crazy sticky at first lol at one point I thought I would never get it off my fingers


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[Jeff B]

That stuff is crazy sticky at first lol at one point I thought I would never get it off my fingers


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I was wondering that too. Difficult to work with while it's in that state! Got much better as I worked it though.

 

[GotWood]

Well here it is. Not as pretty as the one in previous pics. We will see how it holds. Hole was size of my little pecker.

View attachment 308011

FIFY

 

[Jeff B]

FIFY

You broke the internet, thanks.

~everybody with little wieners.

 

[Jeff B]

this stuff is still pretty soft. I read 24 hours to dry. I have kept in 68*. Does it stay kind of soft? should it get hard?

 

[Tim C]

this stuff is still pretty soft. I read 24 hours to dry. I have kept in 68*. Does it stay kind of soft? should it get hard?

It will harden up. The more time goes by the more it cures

 

[Jeff B]

It will harden up. The more time goes by the more it cures

I built a fire and rolled the patch in front of the hot air blower. helped quite a bit. Thanks