New: Take part in the January 2020 BikeRide Giveaway for a HEDKAYSE | ONE bike helmet

Welcome guest! Register or sign in to participate in the cycling discussions.


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, 03:10 PM)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
  Shimano LX Rear Derailleur cable got stuck in the cassette we78 4 8,708 10-29-2012, 02:30 AM
Last Post: Bill
  Converting cassette to 3 speed hub ? jameson2wheels 10 15,077 06-17-2012, 03:14 PM
Last Post: silverarrow
  Freewheel hub or Cassette hub? Marine1 7 16,195 12-12-2011, 07:41 AM
Last Post: Joe_W
  Problem in the Hub? Cassette? 1FJEF 20 19,471 06-06-2011, 09:28 PM
Last Post: 1FJEF
  Transferring cassette to hub help? sasjzl 4 6,486 04-01-2011, 05:16 PM
Last Post: sasjzl
  Cassette hub firedragoninja 5 6,762 03-04-2011, 09:05 AM
Last Post: trevgbb
  Broken Rear Hub. How to remove cassette - freewheel kwstasmbk 11 19,303 01-24-2011, 03:09 PM
Last Post: JonB
  Convert regular hub to push button hub? Black_Blade 4 6,899 03-17-2010, 08:15 AM
Last Post: Joe_W

Forum Jump: