Welp, you don't see that every day.
08-07-15, 01:37 PM
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Welp, you don't see that every day.
Right through the carbon—you can see a splinter of it on the ~10 o'clock arm. At a guess, let this be a warning that one should aaaaalways use their torque wrench.
08-07-15, 01:43 PM
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They're 10-speed SRAM force with electrical tape over them, since the bike is generally black/gold and the white didn't fit well in that area.
These guys:
It's odd(-ish)... I haven't messed with these bolts in about a month, and I didn't feel like they were too tight, though clearly that's much more qualitative than it is useful. The bolts would come loose, so I just took them out, added some loctite, and tightened them back up to ~the same torque as they'd been before.
I was riding home in a drizzle last night and had a chain drop a block from home, which was super surprising because I hadn't experienced one of those in a loooong while. I walked it home, went to the gym, and went to clean my drivetrain up when I got back, and then noticed this. Bleeeech.
These guys:
It's odd(-ish)... I haven't messed with these bolts in about a month, and I didn't feel like they were too tight, though clearly that's much more qualitative than it is useful. The bolts would come loose, so I just took them out, added some loctite, and tightened them back up to ~the same torque as they'd been before.
I was riding home in a drizzle last night and had a chain drop a block from home, which was super surprising because I hadn't experienced one of those in a loooong while. I walked it home, went to the gym, and went to clean my drivetrain up when I got back, and then noticed this. Bleeeech.
Last edited by arben; 08-07-15 at 01:49 PM.
08-07-15, 01:53 PM
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I sense a disturbance in the Force...
08-07-15, 04:18 PM
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08-07-15, 04:35 PM
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08-07-15, 04:41 PM
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I'm glad I'm not the only one in the dark. My real question is who would think electrical tape has a better appearance than factory white decals
08-07-15, 05:22 PM
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Ya, definitely not just the few of you who said they don't get it.
I *think* what I'm seeing is that the spider actually ripped thru (or half-ripped) thru the big chain ring's mounts??
Looks like the tonge/tongue mating of the spider to the large chainring is not aligned and leads me to believe that the slight displacement/offset of the spider to big ring means you toruqe thru it??
Or maybe they're designed like that and we're just seeing the result of a chain drop?
(I'm confused too)
I *think* what I'm seeing is that the spider actually ripped thru (or half-ripped) thru the big chain ring's mounts??
Looks like the tonge/tongue mating of the spider to the large chainring is not aligned and leads me to believe that the slight displacement/offset of the spider to big ring means you toruqe thru it??
Or maybe they're designed like that and we're just seeing the result of a chain drop?
(I'm confused too)
08-07-15, 05:27 PM
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Something definitely looks broken in that second pic. Not sure what happened, though.
08-07-15, 05:30 PM
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Woah, in first pic, all 5 chainring bolts tore out of their holes? Is that what I'm seeing? Surprised everything stayed intact as it did.
08-07-15, 05:57 PM
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Yep, you got it, @LesterOfPuppets. Consider the five holes where the bolts attach the rings to the crank arm--the bolts tore through all of those holes (or it looks like all; I don't have a chainring tool to confirm) in a direction perpendicular to the nornal defining the holes. In other words, the bolts went right through the carbon in a direction radialfrom the circle. In yet other words, imagine the chainring being held in place, then applying a huge torque through the crank arm and the arm just ripping free of the bolts.
08-07-15, 05:58 PM
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I just assumed they were hollowpin bolts ??? and assumed the mating of the spider was due to the praxis rings being slightly different.
Based on the splintering comment and the second photo, I'm going to assume we're talking about this:
Based on the splintering comment and the second photo, I'm going to assume we're talking about this:
08-07-15, 06:14 PM
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@SpeshulEd your arrow is correct.
@spdracr39 it looks better when not seen from a foot away, I promise! https://goo.gl/photos/r8bEyF8DXgK7C3sH6
@spdracr39 it looks better when not seen from a foot away, I promise! https://goo.gl/photos/r8bEyF8DXgK7C3sH6
08-07-15, 06:20 PM
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08-07-15, 06:27 PM
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I'm wondering why the cr bolts are in backwards.
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Keep the chain tight!
08-07-15, 06:35 PM
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From what i can tell, having the hex bits face toward the frame is either typical or not atypical.
@bt : how would you have executed it? I'm finding it difficult to precisely describe the issue; feel free to help clarify if you can.
@bt : how would you have executed it? I'm finding it difficult to precisely describe the issue; feel free to help clarify if you can.
08-07-15, 06:41 PM
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08-07-15, 06:50 PM
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08-07-15, 06:53 PM
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