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


Go Back   > >

Bicycle Mechanics Broken bottom bracket? Tacoed wheel? If you're having problems with your bicycle, or just need help fixing a flat, drop in here for the latest on bicycle mechanics & bicycle maintenance.

User Tag List

Reply
 
Thread Tools Search this Thread
Old 11-14-17, 12:10 PM   #1
torero310
Member
Thread Starter
 
torero310's Avatar
 
Join Date: Sep 2017
Bikes: Nashbar Carbon 105
Posts: 43
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 18 Post(s)
Bent spokes?

So the chain fell of the back of the cassette and into the wheel... The spokes aren't broken but they are slightly bent, do you think I need to repair it or should it be fine it's own condition? (I can take pictures of it if needed but I believe the angle change is from 180 (straight on the spoke itself) to around maybe 120-150 but it's a notch if you get what I mean... Also (carbon frame) but the fork is a creaky (or squeaky however you want to call it)... any suggestions?
torero310 is offline   Reply With Quote
Old 11-14-17, 12:29 PM   #2
cny-bikeman
Mechanic/Tourist
 
Join Date: Apr 2007
Location: Syracuse, NY
Bikes: 2008 Novara Randonee - love it. Would have more bikes if I had time to ride them all. Previous bikes: 1968 Motobecane Mirage, 1972 Moto Grand Jubilee (my fave), Jackson Rake 16, 1983 C'dale ST500.
Posts: 6,913
Mentioned: 5 Post(s)
Tagged: 0 Thread(s)
Quoted: 261 Post(s)
I've not seen a spoke that was merely bent fail. but it's possible that a bent spoke will make truing a bit more quirky. If the notches are actually cuts they could eventually fail, but likely not soon.

Last edited by cny-bikeman; 11-14-17 at 05:54 PM.
cny-bikeman is offline   Reply With Quote
Old 11-14-17, 01:58 PM   #3
Arthur Peabody
Senior Member
 
Join Date: Apr 2017
Bikes:
Posts: 118
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 44 Post(s)
Are these steel spokes? If so, they're wire and a bend won't make much difference if the tension is correct (= so high it straightens it). If they're not steel, I don't know.
Arthur Peabody is offline   Reply With Quote
Old 11-14-17, 02:06 PM   #4
maddog34
Senior Member
 
maddog34's Avatar
 
Join Date: Jul 2015
Location: NW Oregon
Bikes: !981 Trek 930R Custom, Diamondback ascent with SERIOUS updates, and a trek 6700 with updates
Posts: 1,321
Mentioned: 11 Post(s)
Tagged: 1 Thread(s)
Quoted: 510 Post(s)
the bent spokes are not just bent, they will have notches in them... they do break at the notches.
i have seen many broken spokes at the bend/notch caused by chain derails... i replace any bent/notched spokes as soon as possible...

if the spokes break, the wheel goes out of true instantly, sometimes bad enough to end the ride that day... there is no guarantee that the spokes will or will not break.
maddog34 is offline   Reply With Quote
Old 11-14-17, 02:10 PM   #5
FBinNY 
Senior Member
 
Join Date: Apr 2009
Location: New Rochelle, NY
Bikes: too many bikes from 1967 10s (5x2)Frejus to a Sumitomo Ti/Chorus aluminum 10s (10x2), plus one non-susp mtn bike I use as my commuter
Posts: 35,442
Mentioned: 105 Post(s)
Tagged: 1 Thread(s)
Quoted: 3793 Post(s)
Ignore it for now because there's nothing you can do about it, short of rebuilding the wheel which isn't necessary yet.

Eventually (probably very eventually) a spoke will fail, not because of the bend, but because of any notch the chain may have cut into it. If and when that happens, you'll deal with it as you would with any broken spoke. But that will happen, if it happens long after you've ridden this wheel for miles, and maybe never.
__________________
FB
Chain-L site

An ounce of diagnosis is worth a pound of cure.

“Never argue with an idiot. He will only bring you down to his level and beat you with experience.”, George Carlin

“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN

WARNING, I'm from New York. Thin skinned people should maintain safe distance.
FBinNY is offline   Reply With Quote
Old 11-14-17, 03:48 PM   #6
TimothyH
- Soli Deo Gloria -
 
TimothyH's Avatar
 
Join Date: Aug 2015
Location: Northwest Georgia
Bikes: 2017 Niner RLT 9 RDO, 2015 Bianchi Pista, 2002 Fuji Robaix
Posts: 8,121
Mentioned: 90 Post(s)
Tagged: 0 Thread(s)
Quoted: 3278 Post(s)
Quote:
Originally Posted by FBinNY View Post
Eventually (probably very eventually) a spoke will fail

This is exactly why it should not be ignored.

There are no subways, taxis, buses or Ubers where I ride.

Not sure where the OP rides or if walking the bike home is an option for him but it isn't for me.


-THinBFE-
TimothyH is offline   Reply With Quote
Old 11-14-17, 05:01 PM   #7
cyccommute 
Mad bike riding scientist
 
cyccommute's Avatar
 
Join Date: Nov 2004
Location: Denver, CO
Bikes: Some silver ones, a red one, an orange one and a few titanium ones
Posts: 19,508
Mentioned: 45 Post(s)
Tagged: 1 Thread(s)
Quoted: 1285 Post(s)
Quote:
Originally Posted by maddog34 View Post
the bent spokes are not just bent, they will have notches in them... they do break at the notches.
i have seen many broken spokes at the bend/notch caused by chain derails... i replace any bent/notched spokes as soon as possible...

if the spokes break, the wheel goes out of true instantly, sometimes bad enough to end the ride that day... there is no guarantee that the spokes will or will not break.
Yup. I've seen lots of overshifted wheels where the chain grinds the spokes up pretty bad. They may not fail to day but they will probably fail at some point.
__________________
Stuart Black
New! Pokin' around the Poconos A cold ride around Lake Erie
New! Dinosaurs in Colorado A mountain bike guide to the Purgatory Canyon dinosaur trackway
Solo Without Pie. The search for pie in the Midwest.
Picking the Scablands. Washington and Oregon, 2005. Pie and spiders on the Columbia River!
Days of Wineless Roads. Bed and Breakfasting along the KATY
Twisting Down the Alley. Misadventures in tornado alley.
An Good Ol' Fashion Appalachian Butt Whoopin'.
cyccommute is offline   Reply With Quote
Old 11-14-17, 05:04 PM   #8
davidad
Senior Member
 
Join Date: Feb 2009
Bikes:
Posts: 5,251
Mentioned: 9 Post(s)
Tagged: 0 Thread(s)
Quoted: 130 Post(s)
If the spokes are notched I would replace the ones that are. The outbound spokes are the ones that will be cut when the chain gets caught inside the cassette.
Now you can see the need for a spoke protector.
davidad is offline   Reply With Quote
Old 11-14-17, 05:08 PM   #9
maddog34
Senior Member
 
maddog34's Avatar
 
Join Date: Jul 2015
Location: NW Oregon
Bikes: !981 Trek 930R Custom, Diamondback ascent with SERIOUS updates, and a trek 6700 with updates
Posts: 1,321
Mentioned: 11 Post(s)
Tagged: 1 Thread(s)
Quoted: 510 Post(s)
Quote:
Originally Posted by davidad View Post
If the spokes are notched I would replace the ones that are. The outbound spokes are the ones that will be cut when the chain gets caught inside the cassette.
Now you can see the need for a spoke protector.
i install the ones that are the same diameter, or close to that, as the cassette or freewheel... they don't look bad, and will protect the spokes in the event of an overshift.

Daniel's CX bike even has one on it.
maddog34 is offline   Reply With Quote
Old 11-14-17, 05:14 PM   #10
andrewclaus
Senior Member
 
Join Date: Feb 2012
Location: Golden, CO, Scottsdale, AZ
Bikes: 1996 REI Randonee, 1983 Trek 620
Posts: 1,135
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 110 Post(s)
It's only 1/4 of the spokes, and if you change them one at a time and keep the wheel true you don't have to know anything about wheel building.

I agree the spokes are damaged, and they should be changed as soon as is convenient.
andrewclaus is offline   Reply With Quote
Old 11-14-17, 08:28 PM   #11
Dean51
Senior Member
 
Join Date: Feb 2016
Location: Olympic Peninsula, WA
Bikes: '82 YKonno Allez, ~'80 Ron Cooper, '85 Ciocc Designer 84, '77 Schwinn Volare, '98 S-Works Hardtail Mtn.
Posts: 54
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 26 Post(s)
My own experience is that failure (or failures in my case) are a when not an if. You will have to judge whether or not you can accept this risk. Two or three spokes failed before I gave in and had the wheel rebuilt with all new spokes.

Dean
Dean51 is offline   Reply With Quote
Old 11-14-17, 09:13 PM   #12
JohnDThompson 
Old fart
 
JohnDThompson's Avatar
 
Join Date: Nov 2004
Location: Appleton WI
Bikes: Several, mostly not name brands.
Posts: 18,316
Mentioned: 44 Post(s)
Tagged: 0 Thread(s)
Quoted: 806 Post(s)
Quote:
Originally Posted by TimothyH View Post
This is exactly why it should not be ignored.

There are no subways, taxis, buses or Ubers where I ride.

Not sure where the OP rides or if walking the bike home is an option for him but it isn't for me.
Another point is that low spoke count wheels are more likely to become unrideable after a spoke breaks than, say, 32 or 36 spoke wheels. And brake calipers with cam-type cable releases are explicitly designed to accommodate this type of problem.
JohnDThompson is online now   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 04:01 PM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    get answers from real people!
Click to start entering your question.
I HAVE A QUESTION