I keep snapping 105 chains. wth?
#26
Descends like a rock
Joined: Oct 2010
Posts: 4,034
Likes: 16
From: Fort Worth, TX
Bikes: Scott Foil, Surly Pacer
#27
Thread Starter
Oscillation overthruster
Joined: May 2010
Posts: 1,532
Likes: 1
From: Duncan, BC
Bikes: Cinelli Mash / CAAD9 5
Yeah, the chain likes to be assembled a certain way. The A/B of that PDF shows it. I'm not assembling it the right way. I've been putting chains together in the B way for a long time.
Next time I buy a chain (soon) I'll read the instructions on the orientation of the assemble link. I never thought a chain would come with instructions that you HAD to read.
Next time I buy a chain (soon) I'll read the instructions on the orientation of the assemble link. I never thought a chain would come with instructions that you HAD to read.
#28
Dirt-riding heretic
Joined: Aug 2005
Posts: 17,413
Likes: 8
From: Gig Harbor, WA
Bikes: Lynskey R230/Red, Blue Triad SL/Red, Cannondale Scalpel 3/X9
I have a Caad9 5 with 105. This chain is brand new. I went for my first post snow ride of the year on Saturday and snapped the chain twice. Once climbing and once on the flat.
It was lubed, in both cases I was not changing gear. I weigh around 200 right now and my legs while not savage, are mostly tree trunks. This is not power related in my books.
Either I have a derailleur issue or the seemingly straight cassette has an issue. I own a quality chain tool that I never leave home with. Chain breakage never strands me.
I bought the bike used and I put a new derailleur/chain on it. This is not the first time the chain has blown up. It took the derailleur with it last time. Should I be looking at the cassette? Looks straight, but we know looks are deceiving.
It was lubed, in both cases I was not changing gear. I weigh around 200 right now and my legs while not savage, are mostly tree trunks. This is not power related in my books.
Either I have a derailleur issue or the seemingly straight cassette has an issue. I own a quality chain tool that I never leave home with. Chain breakage never strands me.
I bought the bike used and I put a new derailleur/chain on it. This is not the first time the chain has blown up. It took the derailleur with it last time. Should I be looking at the cassette? Looks straight, but we know looks are deceiving.
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#29
Artificial Member




Joined: Jan 2010
Posts: 7,162
Likes: 7,501
From: The Cloud
Bikes: Retrospec Judd, Dahon Boardwalk, Specialized Langster
#30
Senior Member
Joined: Dec 2009
Posts: 4,700
Likes: 5
You oil your chain, right? You grease bearings, right?
Mineral spirits won't harm the chain at all - at least not if it's true mineral spirits.
Simple Green, on the other hand, has been known to cause hydrogen embrittlement of metals.
#32
#33
I have a Caad9 5 with 105. This chain is brand new. I went for my first post snow ride of the year on Saturday and snapped the chain twice. Once climbing and once on the flat.
It was lubed, in both cases I was not changing gear. I weigh around 200 right now and my legs while not savage, are mostly tree trunks. This is not power related in my books.
Either I have a derailleur issue or the seemingly straight cassette has an issue. I own a quality chain tool that I never leave home with. Chain breakage never strands me.
I bought the bike used and I put a new derailleur/chain on it. This is not the first time the chain has blown up. It took the derailleur with it last time. Should I be looking at the cassette? Looks straight, but we know looks are deceiving.
It was lubed, in both cases I was not changing gear. I weigh around 200 right now and my legs while not savage, are mostly tree trunks. This is not power related in my books.
Either I have a derailleur issue or the seemingly straight cassette has an issue. I own a quality chain tool that I never leave home with. Chain breakage never strands me.
I bought the bike used and I put a new derailleur/chain on it. This is not the first time the chain has blown up. It took the derailleur with it last time. Should I be looking at the cassette? Looks straight, but we know looks are deceiving.
Without knowing the history of the frame, it could be a previously crashed frame that was straightened out by hand.
When enough effort is put into a stroke, it easily bends where hit and deforms causing the chain to come out of alignment. Did this happen before the new front derailleur was installed as well?
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Jordan5
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08-09-10 08:53 PM





