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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 12-19-08, 08:51 PM   #1
sp00ki
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1/8" ring on 3/32" arm...

I know it's been done without issue, but i'm curious to know what kind of lifespan i can expect this setup to yield.
it's a 165mm sora crankset w/ a 1/8" ta specialties ring (rain/lockup bike, new build). The crankset is obv. made for a thinner 3/32" ring. As you can see in the below pics, there's a bit of overhang. Will this hold up well? I can't imagine the ring actually bending the ledge, but i'm curious to hear about what you've seen.





As you can see, the overhang isn't insane but it's there. The angle i took the pics @ exaggerates it quite a bit, but i think you can imagine what i'm talking about.



(shiny all over, in case you were curious)

Last edited by sp00ki; 12-19-08 at 09:11 PM.
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Old 12-19-08, 08:55 PM   #2
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It's fine.

Grease your chainring bolts and make sure they're nice 'n' snug. The usual drill.
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Old 12-19-08, 09:31 PM   #3
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I've seen spiders strip out like that. granted it was a cheap crank but I've seen it.
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Old 12-20-08, 01:39 PM   #4
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i agree that as long as your chainring bolts are well maintained and snug, you shouldn't have any trouble, those are what's really holding it on anyway.
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Old 12-21-08, 02:22 PM   #5
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no worries. i've been running an 1/8 miche ring on a campy carbon road crank (ie: carbon spider) for thousands of miles. the ledge on the spider arm is just to locate the ring...it experiences virtually zero load in use.

Last edited by dookie; 12-21-08 at 05:07 PM.
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Old 12-21-08, 03:01 PM   #6
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nice. thanks, that's reassuring.
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