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3/32

Old 05-02-06, 05:11 PM
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3/32

according the business cycles you should not use a multi-speed 3/32 chain on track cogs.

what are my 3/32 track chain options? does Izumi make one this size? if so, where can i find one? it seems KMC bmx chains are the best bet otherwise.
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Old 05-02-06, 05:14 PM
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https://store.somafab.com/izumichains.html
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Old 05-02-06, 05:16 PM
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why shouldnt you use a multi-speed chain with track cogs?
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Old 05-02-06, 05:17 PM
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Aren't "track" cogs 1/8th inch? I'm assuming the OP meant that it's not OK to use a 3/32" chain with an 1/8" cog.
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Old 05-02-06, 05:18 PM
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multi-speed chains need to be more flexible, left and right, since they get derailed by derailuers i think.
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Old 05-02-06, 05:20 PM
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Originally Posted by Sin-A-Matic
Aren't "track" cogs 1/8th inch? I'm assuming the OP meant that it's not OK to use a 3/32" chain with an 1/8" cog.
not sure about cogs, but there are chainrings in 3/32... assumedly, there are also track cogs in 3/32. i think business cycles was warning against busting out a multi-speed or "road" chain on a track/fixed set up -- which makes some sense.
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Old 05-02-06, 05:29 PM
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you can have either a 3/32 or 1/8 track drivetrain. you can use a 1/8 chain with either or a 3/32 with the 3/32 but not on the 1/8.
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Old 05-02-06, 05:36 PM
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whatever. i use 3/32 multispeed chains on a couple of my conversions and nothing has caught fire yet.
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Old 05-02-06, 05:41 PM
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bollocks.
8-speed chains are fine.

if you're talkin 9 or 10-speed OTOH, you may have an argument
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Old 05-02-06, 05:43 PM
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i'd rather ride a chain that is supposedly designed to spin straight without flex to the right and to the left if it costs about the same. might as well, ya know?
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Old 05-02-06, 05:47 PM
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I ran crappy old sedis 7-sp chains for a few years before I knew any better. I didn't die.
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Old 05-02-06, 06:25 PM
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i've got a 3/32 drivetrain. my chainring is an older sugino (also have a backup campy), the rear cogs i have are EAI, they are all 3/32. its been a ***** to find a 3/32 track chain locally. i've had to settle for an 8 speed KMC. it works fine, but i think the izumi may be stiffer. since it is track specific, it will likely have a better life on my drivetrain.

thanks for the soma link.
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Old 05-02-06, 06:40 PM
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There is no problem using a 3/32 chain on fixed gear bikes. They're no weaker just because they can flex to the side more. I swear I've seen Sheldon (and others) discuss this exact topic. Ask how many people have snapped their 3/32 chains from regular use.

I wasn't aware they even made 3/32 track chains, which is why I assumed that "track" drivetrain parts are all 1/8. That's what I get for assuming.
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Old 05-02-06, 07:49 PM
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Sheldon talks about it and specifically recommends not using 1/8" drivetrains because the technology, competition etc for normal narrow chains makes them likely to have better manufacturing standards and less expensive, in addition to being lighter and 1/8" offering no advantage because of its width.
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Old 05-03-06, 08:16 AM
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The only reason to run 1/8 chain is because the cog or whatever you have laying around is 1/8. 3/32 isn't stronger, and the flexing as for shifting thing is a red herring. Pick up a 1/8 chain, it easily flexes side to side as much as it ever would on a single speed drive train; if you're going to throw your chain, it's going to happen regardless of whether you're running track chain.
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Old 05-03-06, 09:04 AM
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Originally Posted by drac_vamp
i'd rather ride a chain that is supposedly designed to spin straight without flex to the right and to the left if it costs about the same. might as well, ya know?
On a single speed/fixed with a decent chain line, the only force on the chain will be straight down the center. The chain won't flex right to left.
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Old 05-03-06, 09:07 AM
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Also, the thickness of the metal of each link will probably be the same on either a 1/8th chain or a 3/32. I don't think there will be a difference in strenght, all other things being equal.
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Old 05-03-06, 09:13 AM
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3/32" multi speed chains probably are stronger. I don't care how burly you are, those chains deal with way more torque on the small ring of a triple crank than you can throw at it on a fixed no matter what the gear ratio is.
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Old 05-03-06, 09:16 AM
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I have a 3/32nd on my spare bike. You can't tell the difference when riding. I don't think the chain was that much different in price from a 1/8th.
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Old 05-03-06, 09:23 AM
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Some gear teeth are too long to use 3/32. I use Miche quick change cogs, and 1/8th is the
only size that will fit those
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Old 05-03-06, 09:34 AM
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I think you mean too wide. Miche quick change is 1/8"
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Old 05-03-06, 10:19 AM
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Folks, 1/8" chain is way heavier. There's no way I'd run that when I could just have a 3/32" drivetrain and save 20 grams. Unless it's Ti...
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Old 05-03-06, 02:36 PM
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Originally Posted by Landgolier
I think you mean too wide. Miche quick change is 1/8"
Nope- i really do mean teeth 'too long'. I had a multi-speed style chain, and you couldnt wrap the chain around more than about 3 teeth. Past that the teeth were too long. The singlespeed chains have a bit more space to accomodate the longer teeth.
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Old 05-03-06, 02:42 PM
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Originally Posted by Hobartlemagne
Nope- i really do mean teeth 'too long'. I had a multi-speed style chain, and you couldnt wrap the chain around more than about 3 teeth. Past that the teeth were too long. The singlespeed chains have a bit more space to accomodate the longer teeth.
WRONG. It sounds like the chain you have was stretched. Each link is 1", 1/2" pin to pin* regardless of the original purpose.

*Unless it's inch-pitch or Dura-Ace 10mm.

Last edited by thurstonboise; 05-03-06 at 02:53 PM.
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Old 05-03-06, 02:53 PM
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Originally Posted by thurstonboise
WRONG. It sounds like the chain you have was stretched. Each link is 1", 1/2" pin to pin.
The chain was brand new- I had to return it for a singlespeed style chain
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