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Path: ...!eternal-september.org!feeder3.eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail From: AMuzi <am@yellowjersey.org> Newsgroups: rec.bicycles.tech Subject: Re: Tire patch failure Date: Tue, 4 Jun 2024 13:58:06 -0500 Organization: Yellow Jersey, Ltd. Lines: 31 Message-ID: <v3no3u$hpra$1@dont-email.me> References: <78lu5jt955mm0ntao7i8kq06rcg5nprc0b@4ax.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Injection-Date: Tue, 04 Jun 2024 20:58:07 +0200 (CEST) Injection-Info: dont-email.me; posting-host="5db9893399e1465e464d908ba17ad8ff"; logging-data="583530"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX1+HwfgK0vS2/+hp1+CCrI37" User-Agent: Mozilla Thunderbird Cancel-Lock: sha1:xqjCq+WWWQ0VC6krNT7zlVQaG9M= In-Reply-To: <78lu5jt955mm0ntao7i8kq06rcg5nprc0b@4ax.com> Content-Language: en-US Bytes: 2166 On 6/4/2024 1:06 PM, Catrike Ryder wrote: > > I collected two old leaky tire tubes and proceeded to patch them. I've > patched many tire and never had any problems. The patches all leaked > and I discovered I could pull them off. I patched them again and > pulled them off again. The patches were labeled "Thumbs Up," made in > China, and came in a large quantity. The tubes were Continental. Has > anyone else used these patched or had this problem. At any rate, > beware what I believe is a faulty product. > > Can't comment on whatever product you have there but the chemistry of good patching systems (Tech, Rema) is zinc-rich to make a very strong bond known as 'cold vulcanization'. https://techtirerepairs.com/company/ Things which look a lot like patches may lack actual capacity for a good bond. BTW it's a patching system- cleaner, cement and patch formulated to make cross linked bonds together. Further to that: https://www.semanticscholar.org/paper/Zinc-Based-Curing-Activators%3A-New-Trends-for-Zinc-Mostoni-Milana/671465bfbffb17da58903f8bf374a0479727c81b -- Andrew Muzi am@yellowjersey.org Open every day since 1 April, 1971