Help finding chain ring to crank arm bolt
11-13-18, 11:09 AM
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Help finding chain ring to crank arm bolt
Hi, I just just bought a used fixie and it is missing the bolt that goes from the chain ring into the crank arm. I’ve been searching for a while but can’t find anything. Anyone know where I would get on and I’m assuming there’s some sort of spacer. Thanks
11-13-18, 11:17 AM
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Your friendly local bike shop has chain ring fixing bolts on the shelf.
What is up with that space between the ring & the crank arm? Does the chain ring spin true? I'll bet there is a spacer or spare available referencing the the crank arm manufacturer in your search.
Something like this, maybe?
What is up with that space between the ring & the crank arm? Does the chain ring spin true? I'll bet there is a spacer or spare available referencing the the crank arm manufacturer in your search.
Something like this, maybe?
Last edited by base2; 11-13-18 at 11:22 AM.
11-13-18, 11:21 AM
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Remove one of the other bolts to check if there is indeed a spacer. If you don’t have any hex wrenches to do so, then just take the bike to your local bike shop and have them do it. They should have replacement bolts and spacers if needed. I would advise you to simply purchase a new set of bolts, instead of trying to buy just one. Also, I would strongly advise you to not ride your bike while you are missing that bolt. If you are, you are likely doing damage to the chainring that can’t be fixed. A replacement ring will cost you a lot more than a set of bolts.
11-13-18, 01:27 PM
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It's going to be the equivalent of two spacers, since this crank was made for two chainrings. So you'll have one spacer the thickness of a single chainring (about 3 mm, but let's not guess), and one the thickness of the space between the two (I think that'll be 5 mm).
But that's probably not the best way to go about it. When you spin the crank, does the chain ring spin true? If so, I'd measure the distance between your chain ring and the crank arm, and put together a series of spacers to match that measurement.
I tend to assume the 'bolt' should be the same thread as a standard chainring bolt, so you could probably use one made for an old school triple.
But that's probably not the best way to go about it. When you spin the crank, does the chain ring spin true? If so, I'd measure the distance between your chain ring and the crank arm, and put together a series of spacers to match that measurement.
I tend to assume the 'bolt' should be the same thread as a standard chainring bolt, so you could probably use one made for an old school triple.
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11-13-18, 05:48 PM
#5
mechanically sound
Google “campagnolo chainring bolt” and you will find exactly what you need, less a spacer(due to the placement of the ring).
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