Retrobike Forum Index

It is currently Sun Dec 04, 2016 9:49 pm

* Login   * Register * Search  * FAQ



Post new topic Reply to topic  [ 7 posts ] 
Author Message
PostPosted: Wed Aug 22, 2012 8:24 pm 
Devout Dirtbag

Joined: Wed Aug 22, 2012 8:06 pm
Posts: 123
Location: Dorset
Hi
I am new too this site and i am after some help please with one of my bikes, This is a 2008 specialized rockhopper pro disk, probably a bit modern for this site ! ( I prefer Kona s early 90s ones ) any way i want to replace the crank rings on the specilaized as they re worn out ! Normally an easy job, but this bike has a hollow tech 1 crank I put a bar through the crank and put a crank extractor on it, it extracted the threads from the arm and thats about it ! :oops: has anyone any other suggestion to remove the crank arm ?
Thanks


Top
 Profile  
 
 Post subject:
PostPosted: Wed Aug 22, 2012 8:42 pm 
King of the DuckBoard
King of the DuckBoard

Joined: Sun Jan 28, 2007 12:30 pm
Posts: 21466
Maybe i've missed understood. But if i remember when i had these it was a allen key on the non-drive side then pull the drive side. Done.

This to modern for the section up to 1997. Their is a 1998 on wards section

Sorry if incorrect on the cranks


Top
 Profile  
 
 Post subject:
PostPosted: Wed Aug 22, 2012 8:52 pm 
National & North West AEC
National & North West AEC
User avatar

Joined: Mon Nov 03, 2008 12:43 am
Posts: 8146
Location: Macclesfield Forest
[ moved to 98 --> section ]

By Hollowtech 1 do you mean Octalink cranks?
In which case a standard crank extractor with an insert plug for the M10 axle size should've worked.

If you've stripped the threads out of the cranks then a bearing puller is probably your best bet for getting the crank off.


Top
 Profile  
 
 Post subject:
PostPosted: Wed Aug 22, 2012 9:14 pm 
Devout Dirtbag

Joined: Wed Aug 22, 2012 8:06 pm
Posts: 123
Location: Dorset
Hollow tech1 i believe is correct as both arms are removable, Thanks for moving to the correct section !
I have tried with a bearing puller but it was nt working well but i will go back to that plan thanks


Top
 Profile  
 
 Post subject:
PostPosted: Sat Aug 25, 2012 9:25 am 
Retro Guru
User avatar

Joined: Fri Jan 12, 2007 1:32 pm
Posts: 1953
Location: Staffordshire
If I remember correctly, the Octalink cranks and bottom bracket set up that you are referring to had a thicker axle than the old square taper cranks so you need to buy a little plug that goes into the end of the axle. The standard crank puller then pushes against this to remove the cranks from the bb axle.


Top
 Profile  
 
 Post subject:
PostPosted: Mon Aug 27, 2012 11:36 am 
Retro Guru
User avatar

Joined: Mon Mar 28, 2011 9:29 pm
Posts: 1877
Location: Somerset
are the threads in the cranks stripped? If not you can get self extracting bolts:

http://www.ebay.co.uk/itm/Shimano-Self- ... 27c17296d1


Top
 Profile  
 
 Post subject:
PostPosted: Mon Aug 27, 2012 1:37 pm 
Devout Dirtbag

Joined: Wed Aug 22, 2012 8:06 pm
Posts: 123
Location: Dorset
Hi
Got the cranks off !!! using a 3 legged puller. Unfortunetlly i had stripped the thread in the crank arms. but on the good side the chain rings are now replaced yay !!!

Now i have to sort the brake calipers :(


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 7 posts ] 

All times are UTC [ DST ]


Who is online

Users browsing this forum: JamesM and 15 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  

About Us

Follow Retrobike

Other cool stuff

All content © 2005-2015 Retrobike unless otherwise stated.
Cookies Policy.
bikedeals - the best bike deals in one place
FatCOGS - Fat Chance Owner's Group

Powered by phpBB® Forum Software © phpBB Group