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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 08-24-12, 06:05 PM   #1
Rhythm of Life
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Crankset movement/play

I just noticed after checking my chainring bolts that I have a bit of play going on. The crankset rocks back and forth up and down barely. Not sure if I just need to tighten down the crankset more, whether the bottom bracket is messed up or what.

Any help would be appreciated.

Bike in question:


Parts:

Schwinn 1984 Le Tour - Chicago factory 58cm
Velocity Aerohead Wheels 700c
Shimano 105 front hub
Surly flip flop rear track hub
18t Surly Cog
19t EAS cog
Sugino RD crankset
TA Industries 47tooth chainring
Brooks B-17 Imperial Saddle
Planet X Rear rack
KMC Devil 101 Chain
MKS pedals
Goldfinger front brake


65-68.5 GI
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Old 08-24-12, 06:07 PM   #2
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What crankset/BB are you using?
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Old 08-24-12, 06:12 PM   #3
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Shimano RD crankset, 130BC, 170cm
BB is stock from a 1984 Schwinn Le Tour
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Old 08-24-12, 06:13 PM   #4
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Ha! Did you edit to include all the details or am I just blind?

I'm assuming - unless the square taper interface on your crank arms is damaged from overtightening or riding around with the bolts too loose - the play is coming from the BB.
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Old 08-24-12, 06:17 PM   #5
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I'm assuming - unless the square taper interface on your crank arms is damaged from overtightening or riding around with the bolts too loose - the play is coming from the BB.
Thats what it looks like. I just wanted a affirmation of some sort. I was only riding on loose bolts for ~.5 miles and it was quickly fixed, not skid stops or anything while they were loose too so I doubt its crankset damage.

Been riding the same cranks and BB for several years without anything until now. Any thoughts on a nice BB? And while I'm at it the only other stock part is the headset. I was thinking a Chris King but I've been out of the game on parts for quite a while.....
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Old 08-24-12, 06:22 PM   #6
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To get a good chainline with that crankset you'll need to use a Sugino 103mm BB (model CBB-103).
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Old 08-24-12, 06:24 PM   #7
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To get a good chainline with that crankset you'll need to use a Sugino 103mm BB (model CBB-103).
Right on, any thoughts on headsets?



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Old 08-24-12, 06:37 PM   #8
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Tange Levin always works. Velo Orange makes a nice threaded headset too if you want to be a little more fancy without breaking the bank.
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