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Singlespeed & Fixed Gear "I still feel that variable gears are only for people over forty-five. Isn't it better to triumph by the strength of your muscles than by the artifice of a derailer? We are getting soft...As for me, give me a fixed gear!"-- Henri Desgrange (31 January 1865 - 16 August 1940)

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Old 11-21-09, 10:53 PM   #1
thom74
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Eighthinch cogs and cranks vs. Iro?

I've lived off the search function for months and months, but finally have a question that doesn't seem to have been asked before.

I'm building up an Iro Mark V and wanted to know how Eighthinch 3/32" drivetrain products compare with Iro stuff. The prices are pretty close, but Wheel&Sprocket offers free shipping off eBay. Plus those Eighthinch cogs look pretty good.

Worth a try? Or just stick with Iro?

If you do find a thread I've missed--have mercy. I've tried. And had hundreds of questions answered without ever posting.

Thanks!
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Old 11-21-09, 11:31 PM   #2
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there is probably no difference whatsoever. they're probably made by the same factory in taiwan with the same specs.
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Old 11-21-09, 11:55 PM   #3
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I just switched my drivetrain over to 1/8" and went with an EighthInch 18t cog & lockring. I'm impressed quite a bit with both of them and despite 1/8" chains and such supposedly being a little noisier, my drivetrain has never been quieter.
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Old 11-22-09, 10:12 AM   #4
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there is probably no difference whatsoever. they're probably made by the same factory in taiwan with the same specs.
Why does everyone always say this about every product made overseas? Is there just one factory in Taiwan that makes everything?
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Old 11-22-09, 10:45 AM   #5
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I've often wondered if there's a grey market in Taiwan that sells "factory seconds" of incredible frames and components for next to nothing.

Scrodzilla thanks. Looking forward to hearing how those parts are doing after you've put a few miles on them--I'm taking my time with this build.
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Old 11-22-09, 12:01 PM   #6
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Why does everyone always say this about every product made overseas? Is there just one factory in Taiwan that makes everything?
No, no, Taiwan is a factory. Haha, but in all seriousness, I couldn't answer your question. But to respond to the OP, I think the difference (if there is one) between the quality from IRO vs the quality from EighthInch will be much less than negligible.
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Old 11-22-09, 12:22 PM   #7
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I have a brand-new EighthInch 15T cog and lockring that I took off when I got my bike, since I only plan to run singlespeed. The cog has never felt the cold, hard steel of a chain against it. PM me if you're interested.

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Old 11-22-09, 01:07 PM   #8
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No, no, Taiwan is a factory. Haha, but in all seriousness, I couldn't answer your question. But to respond to the OP, I think the difference (if there is one) between the quality from IRO vs the quality from EighthInch will be much less than negligible.
Define "quality".

Serously, the Eightinch cog is fine. I've used DA, Surly, Soma, EAI, Miche, and Eightinch, and generic cogs. I can't tell a difference.
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Old 11-22-09, 01:29 PM   #9
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I've lived off the search function for months and months, but finally have a question that doesn't seem to have been asked before.

I'm building up an Iro Mark V and wanted to know how Eighthinch 3/32" drivetrain products compare with Iro stuff. The prices are pretty close, but Wheel&Sprocket offers free shipping off eBay. Plus those Eighthinch cogs look pretty good.

Worth a try? Or just stick with Iro?

If you do find a thread I've missed--have mercy. I've tried. And had hundreds of questions answered without ever posting.

Thanks!
You mean 1/8" drivetrain, right?
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Old 11-22-09, 01:55 PM   #10
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EighthInch does make 3/32" cogs/chainrings too.
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Old 11-22-09, 03:13 PM   #11
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Why does everyone always say this about every product made overseas? Is there just one factory in Taiwan that makes everything?
IRO and Eighthinch probably go through Maxway who have different contractors for different components. You are correct: there are multiples "factories" that actually manufacture the goods, but small US vendors probably only deal with one entity themselves and chances are it's Maxway. That said, if they both deal with Maxway, the cogs are probably obtain through the same contractor / made by the same factory.
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Old 11-22-09, 03:15 PM   #12
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EighthInch does make 3/32" cogs/chainrings too.
Oh yeah? Strange irony...
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Old 11-22-09, 04:31 PM   #13
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I know, right? I even didn't realize they did until I ordered a 1/8" cog and they sent a 3/32 by mistake. When I read the label on the bag it was in I was pretty confused.
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Old 11-22-09, 10:18 PM   #14
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Thanks Aaron, but my legs are so powerful that they'll need a few more teeth than that.
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Old 11-22-09, 11:27 PM   #15
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Wouldn't your legs need to be more powerful? Or was that a joke?
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Old 11-23-09, 12:10 PM   #16
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Yep, I'm trying to make my noodle-like legs feel better. I'm going for 17 teeth.
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Old 11-23-09, 12:34 PM   #17
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Haha it's okay, I run 46-18 and I always feel like a real man.
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Old 11-23-09, 12:47 PM   #18
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my 21t cog is heavier so i carry more weight and am more manly.

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