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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 03-22-11, 12:35 PM   #1
RidinSF
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Creaky cranks

I have DAce 7600 cranks on a UN54 BB and they recently started creaking almost every time I pedal. I found them to be a bit loose and tightened them some more, but when I tighten them, they creak too. Is this normal? Creaking from me pulling the spindle into the holes in the cranks with a bolt or is something really wrong? When I ride after tightening the cranks,the creek seems to have gone away except for one every now and then, but the creaking from tightening them still worries me.
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Old 03-22-11, 12:38 PM   #2
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Are you 100% sure its your cranks? Many times its your saddle or sometime but sounds like your cranks...try standing up in the saddle and see if it gives you the same noise...
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Old 03-22-11, 12:50 PM   #3
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c h a i n r i n g b o l t s
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Old 03-22-11, 01:08 PM   #4
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c h a i n r i n g b o l t s
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Old 03-22-11, 01:29 PM   #5
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Probably your reflectors or valve caps.






SRSLYTHO. Did you lube the spindles/install properly to spec? Have you checked your seat/pedals/chainring?
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Old 03-22-11, 01:31 PM   #6
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Did you great the spindle before you installed the cranks? I had the same issue with my cranks creaking, I took them off today and found both of them to be cracked at the spindle, I highly doubt that happened to you.
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Old 03-22-11, 01:37 PM   #7
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^ That sounds pretty severe, what crankset and bb were you using?
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Old 03-22-11, 04:53 PM   #8
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Wait...aren't DA 7600s ISO? The Shimano UN54 is JIS and you may have ruined the interface on your crank arms.

At any rate, never grease a square-taper spindle. Ever.
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Old 03-22-11, 05:56 PM   #9
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busted bearings in the hub will also make sounds of death
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Old 03-22-11, 05:58 PM   #10
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unfortunately, sometimes crank arms can be ruined by riding with them loose. You will know if they keep loosening up.
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Old 03-22-11, 06:01 PM   #11
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Wait...aren't DA 7600s ISO? The Shimano UN54 is JIS and you may have ruined the interface on your crank arms.
Sheldon seems to think going both ways is OK:

http://www.sheldonbrown.com/bbtaper.html
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Old 03-22-11, 06:02 PM   #12
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You will know if they keep loosening up.
Especially if you installed ISO arms on a greasy JIS spindle.
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Old 03-22-11, 06:07 PM   #13
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You'd think that when buying DA cranks he would have gone and bought an appropriate BB instead of going for the cheapest BB
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Old 03-22-11, 06:08 PM   #14
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I installed ISO 75s on an ungreased JIS spindle. The cranks came with a UN54, or else I would have looked for a matching BB. I hope they're ok... I assumed if it was good enough for Sheldon, it should be good enough for me.
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Old 03-22-11, 10:09 PM   #15
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The saddle is fine, and my chainring bolts are tight. I didn't lube the spindle. I thought that it was bad to. Tightening the cranks made it creak a lot less, but it also creaked as I tightened it. No torque wrench. Just by feel. I'm scared to tighten them a bit more to see if it'll make the creaks go away completely.

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Did you great the spindle before you installed the cranks? I had the same issue with my cranks creaking, I took them off today and found both of them to be cracked at the spindle, I highly doubt that happened to you.
Great? What does that mean?

Quote:
You'd think that when buying DA cranks he would have gone and bought an appropriate BB instead of going for the cheapest BB
I used to have Pake cranks. This BB works for now. However, I've been thinking about the HATTA BB though... Maybe I'll pick it up next month.
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Old 03-22-11, 10:12 PM   #16
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The BB might work "for now" but it's also ruining your fancy crank arms.
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Old 03-22-11, 10:16 PM   #17
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At any rate, never grease a square-taper spindle. Ever.
Ignorant question: Why not? What end does the lead to?
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Old 03-22-11, 10:39 PM   #18
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There is a lot of debate on that question. I lean towards the grease side
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Old 03-22-11, 10:45 PM   #19
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I've always been told to grease it, so I use a tiny bit, I figure it can't hurt. So far it hasn't caused any issues yet. a


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^ That sounds pretty severe, what crankset and bb were you using?
I'm using cheap Origin 8 cranks I picked up over the summer and a Shimano UN54. There are cracks where the crank arm attaches to the spindle.
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Old 03-22-11, 10:50 PM   #20
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Ignorant question: Why not? What end does the lead to?
It can cause a crank arm to slide too far onto a square-tapered spindle when tightened, leading to overtightening and eventually ruining the interface.
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Old 03-22-11, 11:16 PM   #21
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I hear people say that, but I know other people who have been around bikes longer than I've been alive and they have never had an issue with lightly greasing the spindle.
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Old 03-22-11, 11:26 PM   #22
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Phil told me to grease their spindle.

And DA 7600 is JIS or JIS short taper.

Dry fit everything else unless otherwise suggested by manufacturer.
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Old 04-01-11, 01:18 PM   #23
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Wait, so my cranks still creak...
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Old 04-01-11, 02:02 PM   #24
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Have you checked your pedals? I once had creaking cranks years ago, but in fact it wasn't the cranks but my clipless pedals. Try tightening them a little if you are still having the problem. Then let us know how it turned out.
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Old 04-01-11, 02:11 PM   #25
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You'd think that when buying DA cranks he would have gone and bought an appropriate BB instead of going for the cheapest BB
Thank you.
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