Is my chainline straight?
#1
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Is my chainline straight?
It looks slightly misaligned. Though it never made any problems when I ride. Should I put the chainring on the inner put of the crank?
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Eyeballing a static picture is never a great way to measure chainline...
But if I had to guess, looks like your chainring is a good bit to the outside of the cog. So yeah, try putting the chainring on the inside of the spider.
But if I had to guess, looks like your chainring is a good bit to the outside of the cog. So yeah, try putting the chainring on the inside of the spider.
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don't do that put the chainring where its meant to be. your wheel is either off center or its shoddy construction as a result of a cheap frameset and or subpar hub and wheelset or a combination of all 3
#5
on Baby Charlie Concept~
looks like you need a few 0.1mm spacers on your cog~ the chainring chainline looks like it lies right of the cog chainline a bit.
could also just be the picture, or the chain when you took it, or just my imagination. ;D
could also just be the picture, or the chain when you took it, or just my imagination. ;D
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Function > Aesthetics.
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#8
Your cog is slipping.
It's straight enough. If it's fine when you're riding and you've never dropped your chain, there's nothing to worry about. The chainline on my Premium Brew is off by 2mm and I've never had any sort of trouble. When I first built it, I had a 1.5mm spacer beneath my cog to "correct" it but always felt a little unsure about it so I removed it. I feel no difference at all.
#9
Fresh Garbage
Just because it may not be intended to have the chainring on the inside doesn't mean it's wrong. Most of these cranks are probably plain old cranks that can be used as doubles on road bikes just fine, but are sold as single speed cranks.
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#12
aka mattio
Pictures are a terrible way to figure out chainline.
Your hub sets the cog at 42.5-43mm from the centerline of the bike. Measure where the center of the chainline sits by sticking a ruler against it, to the center of the seat tube. Measure that distance. Subtract one number from the other. If you get within a few millimeters of zero, then you're okay.
Some people want exact chainlines and I don't blame 'em, but pick up a chain someday, hold it in the air so that it dangles, and feel how much side-to-side play it actually has. 2mm over a crank-to-cog distance ain't nuthin'...
Your hub sets the cog at 42.5-43mm from the centerline of the bike. Measure where the center of the chainline sits by sticking a ruler against it, to the center of the seat tube. Measure that distance. Subtract one number from the other. If you get within a few millimeters of zero, then you're okay.
Some people want exact chainlines and I don't blame 'em, but pick up a chain someday, hold it in the air so that it dangles, and feel how much side-to-side play it actually has. 2mm over a crank-to-cog distance ain't nuthin'...
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Just ride your bike and worry more about other things. Like the price of beer or will you score with the ladies this weekend. You know, important stuff.
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Nope, chain doesn't fall off at all. Nor does it make any rackity noises.
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Cool! Just like to say thanks for everyone's feedback, much appreciated Bike Forumers!
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