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Spiral Jetty.

My A-bike’s rear wheel has a strange spiral scrape on its right hand side. It was a minor scratch at first, but it seemed growing bigger day by day. It was an unsolved mystery until this morning.

A topic talking about loose chain inspired me to do a little checkout on secondary (lower) chain when I was pumping tyres (I do pump A-bike’s tyre every weekend). Then I found the tyre scraper. It was the secondary chain!! To be more precise, it was chain-connecter-pins!!

The chain has gotten loose to compare to its first state, but it’s not loose enough to set chain tensioner to “H”. I’m not sure why this is happening. Could it be my rear tyre was bigger than usual? No, I don’t think so. Maybe the chain I got was a rough one? mmm… Since A-bike’s gear box has a very simple fool proof (well, more or less) structure, it seems more puzzling. Anyway, the chain pins gave the initial bite on tyre for sure.

Current state of the scraped tyre suggests I’d better get a new tyre and maybe another #25 chain just in case. I shall e-mail Mayhem to seek some advice on this. They may know what’s going on here.

I setup a new topic on this, so if you have same experience, please share it there!

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