Have questions or want to discuss cycling? Join Now or Sign In to participate in the BikeRide community.

New: Take Part in the March Giveaway: Coming Soon 3/24


Cassette is stuck on hub
#1
Today I was changing out the cassette on my fairly new mountain bike, no problem with the existing cassette, just changing the gearing. I removed the retainer screw, but I could only remove the first three rings, the rest of the cassette was stuck on. Here is a picture, please tell me what you think. Thanks, Dan
  Reply
#2
Hi Dan;

Is it out of warranty?

toasted freehub body - must be aluminum.

Sorry, you are going to need a new freehub body; something like this: http://www.amazon.com/Shimano-FH-M760-Freehub-Body-Speed/dp/B000F5EGM8/

Get a steel freehub body, the weight reduction of aluminum is definitely not worth it, as your picture show.

Replacing a freehub body is not difficult; here are some instructions:
http://bikemagic.com/gear/how-to/mountain-bike-maintenance/freehub-replacement.html
http://www.parktool.com/blog/repair-help/freehub-service

As far as removing the remainder of the cassette, I would stick the old freehub body in a vice, and tap on the cassette with a hammer and chisel punch to rotate the cogs until they are out of groves that are cut into the aluminum. Do this on the insides of the cogs so as not to damage the teeth.
Nigel
  Reply
#3
Yeah, you can see in the pic how the cassette has dug into the splines of the freehub body. There is a company (forgot which one... Zipp maybe or DT?) who actually has a very light freehub but with steel insets in the splines so that this does not happen. The costs are... astronomical and the weight savings are negligible, but it makes for a good story Wink
And if it is fairly new: go to the shop and let them deal with it. This should be covered by the warranty. Failing that, maybe contacting the bike company directly could also work.
  Reply
#4
Thanks for the help Nigel, that is very helpful. I thought maybe you would say I shouldn't pedal so hard, hah. I will check the warranty, Dan
  Reply
#5
(02-18-2014, 11:10 AM)greenstop Wrote:  Thanks for the help Nigel, that is very helpful. I thought maybe you would say I shouldn't pedal so hard, hah. I will check the warranty, Dan

Hi Dan;

Not likely Smile I have only steel freehub bodies on my bikes, so that I don't run into what happened with yours. The steel ones are less expensive, and more durable. I set up my drivetrains so that the chain is the weakest link - and not be using weak chains Smile . Chains are easy to replace and easy to monitor for wear/stretch.
Nigel
  Reply
#6
Have not seen that before. Yes you need a new steel hub as to getting the sprockets off you need to use a hammer and a drift or a sacrificial large screwdriver and than hit the sprocket a few times to get it back into the notch so you can remove it. Hopefully that is not the case with all the sprockets.
Never Give Up!!!
  Reply


Possibly Related Threads...
Thread
Author
Replies
Views
Last Post
 
7,432
02-06-2016, 07:17 PM
Last Post: Lighttower
 
11,163
05-19-2015, 08:48 AM
Last Post: alexwang32
 
9,564
06-01-2013, 06:58 PM
Last Post: Painkiller
 
48,890
10-21-2012, 07:19 AM
Last Post: FredS
 
9,255
10-26-2011, 11:43 AM
Last Post: chibler
 
25,390
09-26-2011, 12:00 PM
Last Post: trevgbb
 
29,596
06-03-2011, 08:19 PM
Last Post: mrdunk
 
9,176
10-11-2010, 12:28 PM
Last Post: Jordan300

Forum Jump:

[-]
10 Latest Posts
Santini fluted frame
Today 01:39 PM
Expensive bikes with crappy wheels
Today 10:15 AM
Where are you from and What is your favo...
Yesterday 11:43 PM
2007 Trek Pilot S.P.A. 5.2
Yesterday 07:06 PM
2010 Specialized Hardrock
03-26-2024 09:16 PM
1990 Specialized Rockhopper How to Fluff...
03-25-2024 07:05 PM
Thread busted on right pedal crank
03-24-2024 08:52 PM
Trek domane tyre
03-24-2024 05:48 PM
Modern rims crack at spoke holes
03-24-2024 05:32 PM
Cup & Cone — Simple & Durable or PITA & ...
03-24-2024 04:53 PM

[-]
Join BikeRide on Strava
Feel free to join if you are on Strava: www.strava.com/clubs/bikeridecom

[-]
Top 5 Posters This Month
no avatar 1. Painkiller
21 posts
no avatar 2. ReapThaWhirlwind
16 posts
no avatar 3. Jesper
16 posts
no avatar 4. GirishH
15 posts
no avatar 5. meamoantonio
15 posts