Singlespeed & Fixed Gear - Crankset movement/play

Bikeforums.net is a forum about nothing but bikes. Our community can help you find information about hard-to-find and localized information like bicycle tours, specialties like where in your area to have your recumbent bike serviced, or what are the best bicycle tires and seats for the activities you use your bike for.



PDA

View Full Version : Crankset movement/play

Rhythm of Life
08-24-12, 06:05 PM
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:
http://farm9.staticflickr.com/8290/7498549714_a876530c32_b.jpg

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

Scrodzilla
08-24-12, 06:07 PM
What crankset/BB are you using?
Rhythm of Life
08-24-12, 06:12 PM
Shimano RD crankset, 130BC, 170cm
BB is stock from a 1984 Schwinn Le Tour

Scrodzilla
08-24-12, 06:13 PM
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.
Rhythm of Life
08-24-12, 06:17 PM
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.....
Scrodzilla
08-24-12, 06:22 PM
To get a good chainline with that crankset you'll need to use a Sugino 103mm BB (model CBB-103).
Rhythm of Life
08-24-12, 06:24 PM
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?



***Why doesn't this forum have rep yet? !up rep Scrodzilla
Scrodzilla
08-24-12, 06:37 PM
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.