1/8" chain for fixie?

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Joe24

More serious cyclist than Bonj
Location
Nottingham
Neither do i, i mean a pin just coming out:wacko: I would of thought the thicker chain would of been stronger, and that its less likely for a rivet to just come lose.
Do motorbike chains break more often then because they are more wider and so going by that theory, the more leverage is there so they just snap?
 

kyuss

Veteran
Location
Edinburgh
Joe24 said:
Do motorbike chains break more often then because they are more wider and so going by that theory, the more leverage is there so they just snap?

They probably would if they were built with the same materials and the same diameter pins/sideplates as a bicycle chain, but they're not. They're built for a specific purpose ie huge loads, with weight to match. Have you ever held an average motorbike chain? It probably weighs about 2kg.
 

Joe24

More serious cyclist than Bonj
Location
Nottingham
Dave5N said:
Joe, if you are breaking 3/32 chains, it ain't the chains, it's you.

Unless perhaps you have a better jump than Mr Cavendish.

If that's the case, I'd ring 0161 274 2000 sharpish.

Hang on, i never said i broke a chain:wacko:
I said i stretched 3/32 chains in a month, but 1/8th last me longer.
 

bonj2

Guest
Hover Fly said:
A 3/32" chain is stronger than an otherwise identical 1/8" chain. To put it simply, the chain breaks because first the rivet works its way out of one side plate, then the other side plate can't take the full load and snaps. The rivet works out of the sideplate more easily on the 1/8" chain because it has more leverage.
Wippermann, the only maker I can find figures for on the web, give a minimum tensile strength of 9.1 kN for 1/8'' chain against 10kN for 3/32".

I can understand how that might be the case on a geared bike, or even on a fixie with a bad chain line, but on a fixie with a good chain line how can the rivet "work its way out of one side plate" - there are no lateral forces (i.e. perpendicular to the chain) in one direction but not the other. Which side would it work its way out of, left or right?
 

Joe24

More serious cyclist than Bonj
Location
Nottingham
Hover Fly said:
The simple answer is it doesn't. Back in the days of fixed or Sturmey-Archer and Renold chains, cyclists didn't bother carrying chain tools, because, as my father said, "The frame is more likely to break than the chain".

I dont understand this.
You have said that 1/8th are more iikely to have the rivets come out, and now your saying that the chain wont snap:wacko:
 

rustychisel

Well-Known Member
Joe24 said:
I dont understand this.
You have said that 1/8th are more iikely to have the rivets come out, and now your saying that the chain wont snap:wacko:

I think you're being obtuse. The answer was given in theoretical terms: 'all other things being equal a 1/8 chain is weaker because the pin can be levered from a greater angle' or somesuch. Doesn't change the fact that the answer given is [theoretically] correct.

And, furthermore, you were being frugal with your truth: 'I go through a 3/32 chain a month'... 'didn't say I broke them'. Most readers assumed you were either boasting or bemoaning the fact that you rendered chains unusable due to your enormous strength.

It's possible, you know, that your enormous power outweighs your skill in cycling.
 

bonj2

Guest
rustychisel said:
I think you're being obtuse. The answer was given in theoretical terms: 'all other things being equal a 1/8 chain is weaker because the pin can be levered from a greater angle' or somesuch. Doesn't change the fact that the answer given is [theoretically] correct.

All other things being equal, a 3/32 chain is stronger as it is less likely to break by being hit by lightning, as due to its narrower width the lightning is more likely to go one side of it rather than hit it. :smile: Doesn't make it any better...:angry:
 

rustychisel

Well-Known Member
bonj said:
All other things being equal, a 3/32 chain is stronger as it is less likely to break by being hit by lightning, as due to its narrower width the lightning is more likely to go one side of it rather than hit it. :biggrin: Doesn't make it any better...:biggrin:

EXACTLY my point, centurion...
 
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