Go Back  Bike Forums > Bike Forums > Bicycle Mechanics
Reload this Page >

Slipping rear axle

Notices
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.

Slipping rear axle

Old 10-17-11, 10:58 AM
  #1  
Senior Member
Thread Starter
 
Join Date: May 2010
Location: Omaha, Ne
Posts: 506

Bikes: Trek Belleville, Workcycles opa, Schwinn

Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 61 Post(s)
Liked 6 Times in 3 Posts
Slipping rear axle

I have a shimano nexus 3 speed hub and it keep slipping. No matter how much I tighten the bolt, it will slip at some point. It only happens when I stand up and put a lot of force on the pedals.

Is there something I can do to stop the axle from slipping? I would love to be able to climb hills on 2nd while standing and not having to put it in 1st and slowboat it up.
harshbarj is offline  
Old 10-17-11, 11:17 AM
  #2  
Senior Member
 
Join Date: Feb 2001
Location: England
Posts: 12,948
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 19 Post(s)
Likes: 0
Liked 7 Times in 7 Posts
What type of metal at the frame, steel or alu? Are the dropouts heavily indented?
What kind of nut? The current Shimano nut is very good.You can get much better purchase with a full sized track nut with built-in washer.
How do you tighten the nut, with a small multi-tool, adjustable wrench? I prefer a full sized ring wrench.
MichaelW is offline  
Old 10-17-11, 12:56 PM
  #3  
Senior Member
Thread Starter
 
Join Date: May 2010
Location: Omaha, Ne
Posts: 506

Bikes: Trek Belleville, Workcycles opa, Schwinn

Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 61 Post(s)
Liked 6 Times in 3 Posts
Originally Posted by MichaelW
What type of metal at the frame, steel or alu? Are the dropouts heavily indented?
What kind of nut? The current Shimano nut is very good.You can get much better purchase with a full sized track nut with built-in washer.
How do you tighten the nut, with a small multi-tool, adjustable wrench? I prefer a full sized ring wrench.
The frame is chromoly steel and the frame looks mostly untouched at the axle outside of skid marks from the axle slipping. I use a standard wrench and tighten it to the point the bike shop needs an extender on their wrench(which is already longer than mine) to get the wheel off.

As for the nut, it's the same one that shipped with the bike and is the standard one that ships with the inter-3.
harshbarj is offline  
Old 10-17-11, 12:56 PM
  #4  
Super Moderator
 
Homebrew01's Avatar
 
Join Date: Jul 2004
Location: Ffld Cnty Connecticut
Posts: 21,842

Bikes: Old Steelies I made, Old Cannondales

Mentioned: 12 Post(s)
Tagged: 0 Thread(s)
Quoted: 1173 Post(s)
Liked 919 Times in 606 Posts
What type of washer is between the frame & nut ? You could try a serrated washer for better grip.
__________________
Bikes: Old steel race bikes, old Cannondale race bikes, less old Cannondale race bike, crappy old mtn bike.

FYI: https://www.bikeforums.net/forum-sugg...ad-please.html
Homebrew01 is offline  
Old 10-17-11, 01:08 PM
  #5  
tcs
Palmer
 
tcs's Avatar
 
Join Date: Mar 2007
Location: Parts Unknown
Posts: 8,556

Bikes: Mike Melton custom, 1982 Stumpjumper, Alex Moulton AM, 2010 Dawes Briercliffe, 2017 Dahon Curl i8, 2021 Motobecane Turino 1x12

Mentioned: 37 Post(s)
Tagged: 0 Thread(s)
Quoted: 1640 Post(s)
Liked 1,764 Times in 1,027 Posts
Nexus three-speed? Sounds like your Y33Z20200 non-turn washer is either MIA or doesn't interface tightly with the dropout.

With an IGH like this, the gears will multiply the reverse torque on the axle and if the anti-rotation washer doesn't do it's job, you'll never be able to hold the axle merely by tightening the nuts.
tcs is offline  
Old 10-17-11, 01:16 PM
  #6  
Senior Member
Thread Starter
 
Join Date: May 2010
Location: Omaha, Ne
Posts: 506

Bikes: Trek Belleville, Workcycles opa, Schwinn

Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 61 Post(s)
Liked 6 Times in 3 Posts
Originally Posted by tcs
Nexus three-speed? Sounds like your Y33Z20200 non-turn washer is either MIA or doesn't interface tightly with the dropout.

With an IGH like this, the gears will multiply the reverse torque on the axle and if the anti-rotation washer doesn't do it's job, you'll never be able to hold the axle merely by tightening the nuts.
The drive side dose not have that anti-rotation washer, never did. I found that odd as my inter-7 had one on both sides, but the bike shop said the inter-3 did not need it.

Last edited by harshbarj; 10-17-11 at 03:58 PM.
harshbarj is offline  
Old 10-17-11, 03:51 PM
  #7  
Ride, Wrench, Swap, Race
 
dddd's Avatar
 
Join Date: Jan 2010
Location: Northern California
Posts: 9,167

Bikes: Cheltenham-Pedersen racer, Boulder F/S Paris-Roubaix, Varsity racer, '52 Christophe, '62 Continental, '92 Merckx, '75 Limongi, '76 Presto, '72 Gitane SC, '71 Schwinn SS, etc.

Mentioned: 132 Post(s)
Tagged: 0 Thread(s)
Quoted: 1552 Post(s)
Liked 1,268 Times in 843 Posts
Sometimes oiling the threads and between nut and washer gives improved tightening.
dddd is offline  
Old 10-17-11, 04:11 PM
  #8  
Senior Member
 
gyozadude's Avatar
 
Join Date: Jun 2011
Location: Sunnyvale, California
Posts: 1,180

Bikes: Bridgestone RB-1, 600, T700, MB-6 w/ Dirt Drops, MB-Zip, Bianchi Limited, Nashbar Hounder

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
It'd be interesting to get a picture of the dropouts and see what things might affect the slippage. A few things I look for:

a) is the axle/nut diameter appropriate for the dropout (i.e. does it bite enough metal?)
b) Do both the inside lock-nut and the outside locknut that sandwiches the dropout have sufficient serrations to grip?
c) is there some hub/axle geometry interference that prevents the outer locknut from really cinching down on the inner locknut to make the ultimately tight sandwich?
d) could some other form of chain tensioner/tug help prevent slippage?

Last resort of course is a chain tug of some sort, which only works with horizontal, back facing dropouts. But I'm wondering if any of the first 3 things listed might be the issue.
gyozadude is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Co1Ev
Bicycle Mechanics
6
05-16-16 06:47 AM
Chesterton
Bicycle Mechanics
3
04-28-14 09:25 AM
eerickson7
Singlespeed & Fixed Gear
3
07-21-12 12:17 PM
illdthedj
Bicycle Mechanics
11
08-15-10 12:26 PM
possiblecrit
Bicycle Mechanics
3
04-05-10 08:45 AM

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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service -

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.