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 10-12-11, 07:49 PM   #1
americanlt2
Senior Member
Thread Starter
 
Join Date: May 2009
Bikes:
Posts: 162
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 5 Post(s)
Broken Rear Axle??

I recently noticed my rear tire was wobbling side to side. I took my bike to the LBS and the guy yelled at me saying that I don't take care of my bike? The rear axel is cracked & needs to be replaced. My bike is 8 years old and my question is did I go down a big curb too hard or does the part slowly break down over the years. I decided to take my bike to another LBS to have fixed.

Thanks
americanlt2 is offline   Reply With Quote
Old 10-12-11, 07:54 PM   #2
kaseri
Senior Member
 
Join Date: May 2008
Bikes:
Posts: 204
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I ride quite a lot of hard city miles and I've never broken an axle but I have seen it happen to friends. The bigger issue for me is your LBS mechanic yelling at you. I would find different shop to deal with. Let your dollars do the talking and take your business elsewhere. Depending on the hub you have many of them can easily be serviced with minimal tools/skills.

Last edited by kaseri; 10-13-11 at 01:45 PM.
kaseri is offline   Reply With Quote
Old 10-12-11, 09:29 PM   #3
oldbobcat
Senior Member
 
oldbobcat's Avatar
 
Join Date: Jul 2005
Location: Boulder County, CO
Bikes: '79 Gios, '80 Masi, '06 Felt, early '60s Frejus
Posts: 2,926
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
Personally, I've never broken a hub axle, but I've certainly bent a few.

Hey, it happens, and now I'm replacing a lot of them for customers. Usually it seems to happen because a bearing lock nut gets loose, the balls run out of their race and start running on the axle on one side, and the weakened axle snaps after a seemingly insignificant hit. The quick release skewer holds the hub together until the grinding, squeaking, wheel wobbling, and poor braking drive the cyclist to the shop to "fix the back tire."

The best solution is prevention. Examine your wheels regularly and get them adjusted or overhauled at the first sign of trouble. And there's no reason to tolerate getting yelled at by a shop mechanic.
oldbobcat is offline   Reply With Quote
Old 10-12-11, 09:33 PM   #4
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: 29,949
Mentioned: 9 Post(s)
Tagged: 0 Thread(s)
Quoted: 360 Post(s)
Axles (Not axels BTW) break. It could be from a single big impact, but usually is the result of metal fatigue that happens over time.

If you look at a schematic of a rear hub you'll find that the axle is supported at either end, and subject to loads inboard of the ends (depends on hub design). The loads are both the axle weight and from the chain pulling the hub forward. That flexes the axle, and eventually it'll fail at a thread - usually the first one inboard of the right cone or bearing.

It's been eight years, so hopefully for not a lot of dough you can go another eight years, if something else doesn't fail first.
__________________
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 10-12-11, 09:49 PM   #5
mrrabbit 
Senior Member
 
mrrabbit's Avatar
 
Join Date: Dec 2007
Location: San Jose, California
Bikes: 2001 Tommasini Sintesi w/ Campagnolo Daytona 10 Speed
Posts: 3,190
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Check the rear dropout alignment. The tools to do so look like T-handles with adjustable cups on the ends. It's a 5 minute job.

Better yet, have that same mechanic at the same LBS do it for you:

If it turns out they are not parallel - or close to parallel as they should be, yell back at him:


"You've been servicing my bike for 8 years? What am I paying you for?"


A "payback is a *****" opportunity awaits...

Wheels installed in quality BUT misaligned dropouts are going to end up with bent axles - and accelerate the eventual - a snapped axle.

=8-)
__________________
4000+ wheels built since 1984...

Disclaimer:

1. I do not claim to be an expert in bicycle mechanics despite my experience.
2. I like anyone will comment in other areas.
3. I do not own the preexisting concepts of DISH and ERD.
4. I will provide information as I always have to others that I believe will help them protect themselves from unscrupulous mechanics.
5. My all time favorite book is:

Kahane, Howard. Logic and Contemporary Rhetoric: The Use of Reason in Everyday Life
mrrabbit is offline   Reply With Quote
Old 10-13-11, 08:41 AM   #6
HillRider 
Senior Member
 
Join Date: Aug 2005
Location: Pittsburgh, PA
Bikes: '''96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '12 Surly Pacer, All are 3x8,9 or 10. It is hilly around here!
Posts: 28,917
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 94 Post(s)
If your bike has a freewheel then broken axles were fairly common from either abuse or long term fatigue. Freehubs, particularly Shimano's design, support the axle far better on the drive side and broken axles are now quite rare.
HillRider is offline   Reply With Quote
Old 10-13-11, 09:10 AM   #7
fietsbob 
coprolite
 
fietsbob's Avatar
 
Join Date: Jun 2010
Location: NW,Oregon Coast
Bikes: 7
Posts: 20,393
Mentioned: 9 Post(s)
Tagged: 0 Thread(s)
Quoted: 643 Post(s)
And the nature of the steel and it's heat treatment, processes,
there is a range of hardness and/or ductility, that can be made ,
by controlling the process of that heat treatment.

hardening, OK for some purpose, is inappropriate for others.

I think Axel is some guy that fronts Guns And Roses.
or is it a particular style of spinning jump in figure skating..

Last edited by fietsbob; 10-13-11 at 09:13 AM.
fietsbob is offline   Reply With Quote
Old 10-13-11, 10:20 AM   #8
mrrabbit 
Senior Member
 
mrrabbit's Avatar
 
Join Date: Dec 2007
Location: San Jose, California
Bikes: 2001 Tommasini Sintesi w/ Campagnolo Daytona 10 Speed
Posts: 3,190
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by fietsbob View Post
And the nature of the steel and it's heat treatment, processes,
there is a range of hardness and/or ductility, that can be made ,
by controlling the process of that heat treatment.

hardening, OK for some purpose, is inappropriate for others.

I think Axel is some guy that fronts Guns And Roses.
or is it a particular style of spinning jump in figure skating..
...or a FPS gamer I used to hang out with at Dwango-SJ and H2H-San Jose.

=8-)
__________________
4000+ wheels built since 1984...

Disclaimer:

1. I do not claim to be an expert in bicycle mechanics despite my experience.
2. I like anyone will comment in other areas.
3. I do not own the preexisting concepts of DISH and ERD.
4. I will provide information as I always have to others that I believe will help them protect themselves from unscrupulous mechanics.
5. My all time favorite book is:

Kahane, Howard. Logic and Contemporary Rhetoric: The Use of Reason in Everyday Life
mrrabbit is offline   Reply With Quote
Old 10-13-11, 01:22 PM   #9
Whiteknight
Senior Member
 
Join Date: Sep 2006
Bikes:
Posts: 466
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by americanlt2 View Post
I recently noticed my rear tire was wobbling side to side. I took my bike to the LBS and the guy yelled at me saying that I don't take care of my bike? The rear axel is cracked & needs to be replaced. My bike is 8 years old and my question is did I go down a big curb too hard or does the part slowly break down over the years. I decided to take my bike to another LBS to have fixed.

Thanks
A few weeks ago I had to take my Trek Multitrack rear wheel to the LBS. Rear wheel wobble. Used mainly on an asphalt paved MUP with no riding off curbs or anything like that. Replaced the axle while I waited. No big deal and not expensive. According to the guy at the LBS, this happens. Just from mileage. About 6,000 miles on it before it broke.

If an owner or worker at an LBS treated me as you comment I would look for another LBS. I deal with one local bike shop and one in Trappe, PA. Nothing but good things to say about both of them.
Whiteknight is offline   Reply With Quote
Old 10-13-11, 01:59 PM   #10
MNRon
29er Rider
 
MNRon's Avatar
 
Join Date: Oct 2009
Location: Central Minnesota
Bikes: Gary Fisher ARC Pro, Cannondale Caffein 29er Lefty hardtail, building a Kona Major One, Custom steel frame from early 80's with Campy Nuovo Record
Posts: 169
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Really, the wrench "yelled" at you? Or did he (or she) just say that this is probably a case of neglect but we can fix it for you?
MNRon is offline   Reply With Quote
Old 10-13-11, 04:52 PM   #11
americanlt2
Senior Member
Thread Starter
 
Join Date: May 2009
Bikes:
Posts: 162
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 5 Post(s)
MN, he said that I'm not taking care of my bike and need tune-ups ect... I felt like I was in a Seinfeld episode or something.
americanlt2 is offline   Reply With Quote
Old 10-13-11, 06:58 PM   #12
HillRider 
Senior Member
 
Join Date: Aug 2005
Location: Pittsburgh, PA
Bikes: '''96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '12 Surly Pacer, All are 3x8,9 or 10. It is hilly around here!
Posts: 28,917
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 94 Post(s)
Quote:
Originally Posted by Whiteknight View Post
A few weeks ago I had to take my Trek Multitrack rear wheel to the LBS. Rear wheel wobble. Used mainly on an asphalt paved MUP with no riding off curbs or anything like that. Replaced the axle while I waited. No big deal and not expensive. According to the guy at the LBS, this happens. Just from mileage. About 6,000 miles on it before it broke.
That is a very early failure for any decent hub, particularly if you aren't a abusive rider. Does the bike have a freewheel or a freehub?

Quote:
Originally Posted by Whiteknight View Post
If an owner or worker at an LBS treated me as you comment I would look for another LBS.
+100 but not being there we really don't know how harsh the exchange really was.
HillRider is offline   Reply With Quote
Old 10-13-11, 07:36 PM   #13
JanMM
rebmeM roineS
 
JanMM's Avatar
 
Join Date: Jan 2006
Location: In Central IN
Bikes: RANS V3, RANS V-Rex, RANS Screamer
Posts: 13,397
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 31 Post(s)
Last/only axle I broke was on a '94 C-dale hybrid that had a freewheel hub. Broke after about six years and lotsa miles.
__________________
RANS V3 - Ti, RANS V-Rex - cromo, RANS Screamer - cromo
JanMM is offline   Reply With Quote
Old 10-13-11, 07:39 PM   #14
HillRider 
Senior Member
 
Join Date: Aug 2005
Location: Pittsburgh, PA
Bikes: '''96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '12 Surly Pacer, All are 3x8,9 or 10. It is hilly around here!
Posts: 28,917
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 94 Post(s)
Quote:
Originally Posted by JanMM View Post
Last/only axle I broke was on a '94 C-dale hybrid that had a freewheel hub. Broke after about six years and lotsa miles.
Similar experience here. The only broken axle I've ever seen was on a friends '88 Trek 1100 with a Maillard 7-speed freewheel hub and a ton of miles under his and the previous owner's use.
HillRider is offline   Reply With Quote
Old 10-13-11, 08:34 PM   #15
Whiteknight
Senior Member
 
Join Date: Sep 2006
Bikes:
Posts: 466
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by HillRider View Post
That is a very early failure for any decent hub, particularly if you aren't a abusive rider. Does the bike have a freewheel or a freehub?


+100 but not being there we really don't know how harsh the exchange really was.
It has the typical Shimano 7 speed Megarange freewheel.
According to the LBS this axle failures are not frequent but than not unknown. I weight 180 and am carrying roughly 25 to 35 pounds on a rear rack on most rides. We ride year round except if there is snow on the trail. Freewheel and chain replacement around every 2000 to 2500 miles.

The two local bike shops I frequent have me spoiled. I go in knowing exactly what I want and what the going rate for it is. So I don't try and haggle prices. I get our bikes and repairs through the closest one but they don't stock good clothing. So the shop at Trappe gets our clothing business. Both treat the wife and I like friends when we walk in the door.

I am always amazed at the low cost of parts for our bikes and how durable they are. Compared to car parts the bikes are the best bargain going. So if a part breaks occasionally I don't get bent out of shape. Compared to bowling or golfing the bikes are dirt cheap based on hours of use.
Whiteknight 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 04:44 AM.