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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 09-21-07, 01:58 PM   #1
Eric Hanus
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How do i find out my BB size?

Do i have to measure it? If so is it end to end or are there some tricks to it? Would it be stamped on the BB shell or the BB itself?
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Old 09-21-07, 02:15 PM   #2
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measure it.
depending on what kind of BB it is it might be printed on the cartridge or the spindle itself.
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Old 09-21-07, 03:26 PM   #3
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can i just measure the bottom bracket by measuring the bottom bracket outter shell on the very lowest point of the frame?
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Old 09-21-07, 03:27 PM   #4
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can i just put a tape measure to the frame where the bottom bracket is?
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Old 09-21-07, 03:35 PM   #5
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yes you can. Make sure to start measuring from the 1" mark on your tape because that metal hangover thing on the end can add a couple of mm
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Old 09-21-07, 04:56 PM   #6
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are you looking for your shell width (which will likely tell you threading type) or spindle length?
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Old 09-21-07, 06:04 PM   #7
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yes you can. Make sure to start measuring from the 1" mark on your tape because that metal hangover thing on the end can add a couple of mm
Um, that's what the metal thing is made for: getting your measurement to accurately start at 0. The metal tab has some play on a decent tape measure because it's meant to have two positions, one "out" so you can put it on the outside of whatever you're measuring and the "in" position when you have to push it up against a surface.
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Old 09-21-07, 06:17 PM   #8
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I've always had more success in building things using the +1" method. Ends up being far more consistent, especially if being exact is a significant issue.
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Old 09-21-07, 06:30 PM   #9
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Excuse me if you know this already or if it's irrelevant Hanus, but to get a full description of your bb you need to know shell width, spindle width, what type the spindle interface is (jis? octalink? isis?) and the type of threading.
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Old 09-21-07, 06:40 PM   #10
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Do i have to measure it? If so is it end to end or are there some tricks to it? Would it be stamped on the BB shell or the BB itself?

What bike do you have? Do you have a serial number? If so, the internet is your friend.


Otherwise, calipers will make quick work of it. Inside diameter measurement.
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Old 09-21-07, 07:34 PM   #11
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Excuse me if you know this already or if it's irrelevant Hanus, but to get a full description of your bb you need to know shell width, spindle width, what type the spindle interface is (jis? octalink? isis?) and the type of threading.
you better not get this thread shut down.
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Old 09-21-07, 08:22 PM   #12
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what kind of frame do you have?
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Old 09-21-07, 09:59 PM   #13
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How do you find out if its Italian, French or English threading?
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Old 09-21-07, 10:12 PM   #14
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By the BB width.
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Old 09-21-07, 10:46 PM   #15
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yeah, I would say tell us what the frame is, would make it way easier to help.
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Old 09-22-07, 01:25 PM   #16
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Fuji Del Rey from the 70's or 80's

im pretty sure there is a serial number on it, i just need to go down stairs and write it down.
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Old 09-22-07, 03:06 PM   #17
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99.9999% chance of being British threaded
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Old 09-22-07, 04:37 PM   #18
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i have no idea what that means
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Old 09-22-07, 05:03 PM   #19
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Start here.
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Old 09-23-07, 02:19 PM   #20
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sometimes even the ruler is not accurate if its one of them cheap 99 cents.
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Old 09-24-07, 03:41 PM   #21
Eric Hanus
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stamped on the frame below the bottom bracket it says FJ118986

its a fuji del rey and i dont think ill be riding it until i fix this, because it sounds like my cranks are about to fall off.
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Old 09-25-07, 10:39 PM   #22
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i think i may have fixed it, it was just my rear wheel working itself loose
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