Go Back  Bike Forums > Bike Forums > Singlespeed & Fixed Gear
Reload this Page >

DA HB-7600 Hub Problem

Notices
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)

DA HB-7600 Hub Problem

Old 05-06-11, 04:54 PM
  #1  
Member
Thread Starter
 
Join Date: Feb 2011
Posts: 39
Likes: 0
Liked 0 Times in 0 Posts
DA HB-7600 Hub Problem

So, today as I was putting on a new tire I discovered that my rear axle does NOT spin freely. The set up is an Open Pro laced to a DA, as said in the title.. I can't even spin the axle with my fingers. My first thought was the cones must be too tight. I have ONE cone wrench and when I tried to loosen one side, it spun the axle but didn't loosen the cone.. I'm wondering if this could be caused by over-tightening the bolts on the hub when putting it on the frame. The last time I had the wheel off, the hub spun smoother than glass. Then, one day it's like this.. If anyone has ever had a similar problem or has any input on this I'd appreciate it. Thanks for all your time.
Ryrog is offline  
Old 05-06-11, 05:03 PM
  #2  
Veteran Racer
 
TejanoTrackie's Avatar
 
Join Date: Jul 2009
Location: Ciudad de Vacas, Tejas
Posts: 11,760

Bikes: 32 frames + 80 wheels

Liked 767 Times in 432 Posts
You need 2 cone wrenches to properly adjust a hub with open bearings and a cup and cone design. What probably happened is that when you tightened the axle nut, you rotated the axle, which tightened the cone excessively.
__________________
What, Me Worry? - Alfred E. Neuman

Originally Posted by Dcv
I'd like to think i have as much money as brains.
I see the light at the end of the tunnel, but the tunnel keeps getting longer - me

Last edited by TejanoTrackie; 05-06-11 at 05:18 PM. Reason: spelling
TejanoTrackie is offline  
Old 05-06-11, 05:07 PM
  #3  
Fresh Garbage
 
hairnet's Avatar
 
Join Date: Apr 2009
Location: Los Angeles
Posts: 13,190

Bikes: N+1

Liked 27 Times in 18 Posts
From pictures of DA hubs it looks like he can use a regular wrench for the locknut, but it doesn't sound like he had.

Here is a good hub adjustment tutorial, just get the correct wrenches since Shimano doesn't use "standard" sizes (I dont know what the DA track hub uses)
https://bicycletutor.com/overhaul-wheel-bearings/

Last edited by hairnet; 05-06-11 at 05:12 PM.
hairnet is offline  
Old 05-06-11, 05:10 PM
  #4  
Elitist
 
carleton's Avatar
 
Join Date: Jul 2005
Location: Atlanta, GA
Posts: 15,965
Liked 93 Times in 78 Posts
Originally Posted by TejanoTrackie
You need 2 cone wrenches to proper adjust a hub with open bearings and a cup and cone design. What probably happened is that when you tightened the axle nut, you rotated the axle, which tightened the cone excessively.
+1

This is common and normal with those hubs. i just adjusted mine last night. Same hubs.
carleton is offline  
Old 05-06-11, 05:59 PM
  #5  
モㄥ工匕モ 爪モ爪乃モ尺
 
evilcryalotmore's Avatar
 
Join Date: Feb 2010
Location: LA San Gabriel, California
Posts: 2,135

Bikes: Custom frame

Likes: 0
Liked 0 Times in 0 Posts
This happen to me once, But it the cones didn't tighten, They actually loosened causing my bearings to have play left in right.
evilcryalotmore is offline  
Old 05-06-11, 07:56 PM
  #6  
i smell bacon
 
yummygooey's Avatar
 
Join Date: Mar 2010
Posts: 5,574

Bikes: Geekhouse Deerfield, GT Edge Ti, Spooky Skeletor, TET Track, Ritchey P-650b, Bridgestone MB-3

Likes: 0
Liked 1 Time in 1 Post
The way I was taught was to adjust the cone so that there is no play but the axle spins smoothly. Then with one cone wrench holding the cone stationary, tighten the locknut against the cone.

At least that's how I do it... I never understood those tutorials until I watched someone do it at the co-op.
yummygooey is offline  
Old 05-08-11, 04:55 AM
  #7  
I just wanna ride
 
stryper's Avatar
 
Join Date: Oct 2008
Location: Chico Califo
Posts: 1,155

Bikes: 2013 BMC Impec

Likes: 0
Liked 1 Time in 1 Post
Originally Posted by carleton
+1

This is common and normal with those hubs. i just adjusted mine last night. Same hubs.
I've been taking care of my DA hubs with just 1 cone wrench for over 2 years. One side is glued in place or whatev, so just using a crescent wrench on that side and a cone wrench on the other works just fine
stryper is offline  
Old 05-08-11, 07:49 AM
  #8  
Senior Member
 
vladuz976's Avatar
 
Join Date: Nov 2008
Location: Shinjuku, Tokyo
Posts: 333

Bikes: Nagasawa Special Track

Likes: 0
Liked 4 Times in 2 Posts
true, one side can always stay fixed and you do all adjustments on the other, but easiest way is still two 14mm cone wrenches and two 18mm wrenches for the nuts. that's for a rear DA 7600. The front one takes 13mm cones wrenches I think. Took me forever to get the adjustment right the first time, but ones you got the cones right, the lockring/washer should prevent you from simultaneously tightening the cones when you tighten the nuts or mount it to the frame/fork.
Are you sure you have those washers between the cones and the nuts?
vladuz976 is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
dugay
Bicycle Mechanics
8
10-03-15 03:46 PM
totops1
Bicycle Mechanics
22
07-11-14 08:37 AM
Reeses
Bicycle Mechanics
16
03-03-13 11:43 PM
Jonas DW
Bicycle Mechanics
23
07-31-12 07:45 PM
TromboneAl
Bicycle Mechanics
25
10-15-10 11:35 PM

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 - Your Privacy Choices -

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