Vc4 cold vulcanizing compound

Discussion in 'Axles / Suspension / Tires' started by Jeff B, Dec 4, 2019 at 9:17 AM.

  1. Jeff B

    Jeff B pool boy

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  2. Tim C

    Tim C Wizard

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    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
     
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  3. Tim C

    Tim C Wizard

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    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.
     
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  4. Jeff B

    Jeff B pool boy

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    Thank you
     
  5. karatejosh

    karatejosh Well-Known Member

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    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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  6. Jeff B

    Jeff B pool boy

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

    karatejosh Well-Known Member

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    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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  8. Tim C

    Tim C Wizard

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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.
     
  9. karatejosh

    karatejosh Well-Known Member

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    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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  10. Jeff B

    Jeff B pool boy

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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.
     
  11. karatejosh

    karatejosh Well-Known Member

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    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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  12. karatejosh

    karatejosh Well-Known Member

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    [​IMG][​IMG][​IMG] this is the last one I did just to give you an idea


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  13. paradisePWoffrd

    paradisePWoffrd Recovering Project Junkie

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    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.
     
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  14. GotWood

    GotWood Sayer of Fact

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    @Jeff B won't understand this concept:shaking:
     
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