Cycling and bicycle discussion forums. 
   Click here to join our community Log in to access your Control Panel  


Go Back   > >

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)

User Tag List

Reply
 
Thread Tools Search this Thread
Old 02-05-06, 12:03 PM   #1
genericbikedude
如果你能讀了這個你講中文
Thread Starter
 
genericbikedude's Avatar
 
Join Date: Feb 2005
Location: New York
Bikes:
Posts: 3,542
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Chain tension

I have a little chaintug on the end of my driveside dropout (forkend, whatever). I use it, and after 15 mins or so of fiddling around with my chain tension and wheel alignment, I can get it to a nice sweet spot where the chain doesn't bind and there is no slack when I go from forward pedaling to back pedaling.

Afterwards however, when I take it out for a ride, the chain starts making painful noises, and then the slack returns. What do you all think is happening? How to fix it? Is it possible to find that sweet spot and remain there indefinately, or is some slack inevitable? Do I need a better chainring (I'm currently using a stronglight)? Or will it be fixed by centering the chainring on the spider somehow? Or maybe the chain is somehow to blame? Maybe I just need to torque the axle nuts harder? Thoughts?
genericbikedude is offline   Reply With Quote
Old 02-05-06, 01:19 PM   #2
fixedpip
asleep at the wheel
 
fixedpip's Avatar
 
Join Date: Aug 2004
Location: Chicago
Bikes: Custom Richie Ditta Track Bike, Eddie Merckx Corsa, Marioni Custom Pista, Dolan Cyclocross
Posts: 974
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
One possibility is that your chainring isn't round at all so your setting the tension at the widest part and, when you get to the narrowest part of the ring theres slack there.

However, I would say its most likely that your wheel is moving in the track ends/dropouts. Not too sure about the horrible noise part though - that maybe the chain tug shrieking as its being asked to do all the work.

Some hubs have notoriously bad track nuts that just don't do jack. I would probably upgrade your nuts if they came with a cheap hub. Other options are to rough the paint around the ends/dropouts so the surface isn't so smooth or try with a friends wheel to see if you have the same problem.

If this is an Alu frame be careful about cranking down your nuts too tight.
fixedpip is offline   Reply With Quote
Old 02-05-06, 02:14 PM   #3
teiaperigosa
Banned.
 
teiaperigosa's Avatar
 
Join Date: Oct 2005
Location: 40th, up in the 30th
Bikes:
Posts: 1,694
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
dude,
teiaperigosa is offline   Reply With Quote
Old 02-05-06, 04:22 PM   #4
genericbikedude
如果你能讀了這個你講中文
Thread Starter
 
genericbikedude's Avatar
 
Join Date: Feb 2005
Location: New York
Bikes:
Posts: 3,542
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
It could be the nuts maybe--the hubs are promax fix-fix, and I dont torque them SUPER hard because I've stripped promax axles before. But I torque them pretty hard. The chainring is a stronglight "Track" chainring, so I would imagine that it is pretty round, but what do I know? It could be a very minor centeringness issue with the spider, but everything looks nice and even.
genericbikedude is offline   Reply With Quote
Old 02-05-06, 07:43 PM   #5
treechunk
information sponge
 
Join Date: Feb 2005
Location: Little Village, Chicago, IL
Bikes: Lots. Mostly steel. Mostly heavy. Mostly geared, and very low, at that.
Posts: 692
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Sheldon Brown has a method for evening out your chain tension. I've never gotten his specific method to work, but I have used similar methods and had it work pretty well.
__________________
Philosophy and feelings don't change the laws of physics
treechunk is offline   Reply With Quote
Old 02-06-06, 10:32 AM   #6
Aeroplane
jack of one or two trades
 
Aeroplane's Avatar
 
Join Date: Jun 2005
Location: Suburbia, CT
Bikes: Old-ass gearie hardtail MTB, fix-converted Centurion LeMans commuter, SS hardtail monster MTB
Posts: 5,637
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Do you have chain tugs on both ends? Maybe the non-drive side is slipping.
Aeroplane is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -6. The time now is 03:06 PM.