HOT: Active* forum members generally gain 5% discount at starbike.com store!
Weight Weenies
* FAQ    * Search    * Trending Topics
* Login   * Register
HOME Listings Articles FAQ Contact About




Post new topic Reply to topic  [ 23 posts ] 
Go to page Previous  1, 2
Author Message
PostPosted: Sun Dec 30, 2012 11:46 pm 
Offline
in the industry

Joined: Sat May 12, 2012 7:25 pm
Posts: 1254
Location: Glermsford, Suffolk U.K
Surely if the aluminium insert is bonded in it can be re bonded as well. If it is the treads that are damaged the heliccoiling is easy strangely many shops in the U.K don't do it.

_________________
www.thecycleclinic.co.uk


Top
 Profile  
 
PostPosted: Sun Dec 30, 2012 11:51 pm 
Offline

Joined: Mon Jan 16, 2012 7:03 am
Posts: 162
Location: Queensland Australia
Is it possible for a Carbon experienced member to maybe remove the aluminium thread and then rebond it back in place. Maybe its not much cheaper than a new arm, but it may it is?
Thisisatest is correct about helicoils, all the ones I have used are steel, and therefore I would also assume to be stronger than standard alloy thread.

Oops, bm0p700f, beat me to it. :)

_________________
2013 Giant TCR Advanced SL 0, 6.92kg
2013 Giant Defy Composite 2 M, 8.5kg - Wife's
Azzurro Torino 8.55g
Fuji 650 10.8kg
Miele Lupa Triple Tandem 38,89kg


Top
 Profile  
 
Posted: Sun Dec 30, 2012 11:51 pm 


Top
  
 
PostPosted: Mon Dec 31, 2012 12:04 am 
Offline

Joined: Fri Feb 21, 2003 1:00 am
Posts: 469
Rebonding of the aluminum in the carbon crank arm is probably not possible.
Usually the carbon crank arms encapsulate an aluminum plug at the pedal end and depending on the design at the crank spindle end as well. So if you can imagine that if both sides of the
internal bond contact has let go. When you unthread the pedal spindle, if it's even possible.
You will have an alum. part that can slide up and down the crank arm. There will not be room
to get new adhesive on the sides of the part properly.
If the pedal thread insert were a T shape in which only 1 side is bonded, it wouldn't last
long under the pedaling forces.

_________________
AEROLITUS-defender of the faith


Top
 Profile  
 
PostPosted: Mon Dec 31, 2012 1:51 am 
Offline
Tubbie Guru

Joined: Tue May 03, 2005 2:20 am
Posts: 5783
Location: Belgium
Hi,

Quote:
If so, it is the aluminum threaded part that is loose in the carbon arm, no (simple, convenient, cost effective) fix for that.


If the insert is round and just epoxied to the crank arm then it can be fixed provided you can remove it first.
Problem is that we don't know how it is attached to the arm nor what shape it has.

I had a similar problem with an older Campa carbon crank one that had the pedal spindle bonded to the insert (Ti to steel IIRC). Forcing the pedal spindle in the wrong direction dislodge the insert and eventally the pedal as well.
After that I epoxied the insert back into the arm and never had any problem with it since.

Since it seems to move a bit I suggest for Tinea to try and see if he can make it move around its own axis. If so then it can be solved.

Cheers, ;)

_________________
Being a snob is an expensive hobby.


Last edited by fdegrove on Mon Dec 31, 2012 2:35 am, edited 1 time in total.

Top
 Profile  
 
PostPosted: Mon Dec 31, 2012 2:23 am 
Offline

Joined: Mon Jan 16, 2012 7:03 am
Posts: 162
Location: Queensland Australia
Fedegrove is right, I think it could be rebonded. My hunch is that it would be best to remove the round? spindle thread? from the crank arm, and after cleaning and reabrasiving? not really a word, :lol: ( but remaking an abrasive surface to rebond to, within the crankarm and on the alloy spindle thread) you should be able to make enough room within it to get a strong enough bonding, to make it work. :thumbup: Best of luck.
I believe there are certainly some very smart people on this forum, who are more than competent to help you out, Tinea.

Cheers
Austke

_________________
2013 Giant TCR Advanced SL 0, 6.92kg
2013 Giant Defy Composite 2 M, 8.5kg - Wife's
Azzurro Torino 8.55g
Fuji 650 10.8kg
Miele Lupa Triple Tandem 38,89kg


Top
 Profile  
 
PostPosted: Mon Dec 31, 2012 2:35 am 
Offline
User avatar

Joined: Thu Jul 02, 2009 11:27 am
Posts: 252
Location: Nu Zild
Tinea Pedis wrote:
it was drive side, I doubt the regular S900 has a mount for the SRM spider.


I was surprised too, but the spline pattern is exactly the same for the removable spider they come with and the SRM spider. I have switched arms over on an SRM myself.


Top
 Profile  
 
PostPosted: Mon Dec 31, 2012 10:28 am 
Offline

Joined: Sun Nov 13, 2011 6:00 am
Posts: 233
What type of SRM was this?

It happened to my FSA K-Force one this year. They replaced it on warranty. I think the trick is to run pedal washers from what I've been told. Better safe than sorry.

I think you can pick up a new K-Force NDS crank arm between $200 - $300 NZD.


Top
 Profile  
 
PostPosted: Mon Dec 31, 2012 11:49 am 
Offline
Moderator
User avatar

Joined: Sat Mar 14, 2009 6:08 am
Posts: 7547
Location: Geeeelong!
SRAM.

Pedal washers were on as well.

_________________
http://www.nicksquillari.com.au Forum Jedi


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 23 posts ] 
Go to page Previous  1, 2


Who is online

Users browsing this forum: audiophilitis, Bing [Bot], Google [Bot], Google Adsense [Bot], nroche31, Valbrona and 48 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:  

   Similar Topics   Author   Replies   Views   Last post 
There are no new unread posts for this topic. Colnago repair

in Road

nick

5

619

Wed May 21, 2014 6:07 pm

barsook77 View the latest post

There are no new unread posts for this topic. MCFK Saddle Repair

in Road

RyanH

11

877

Sun Feb 02, 2014 4:14 pm

RyanH View the latest post

There are no new unread posts for this topic. Possible to repair di2 9070 cable?

in Road

jever98

5

363

Wed Jun 18, 2014 7:29 am

notaero View the latest post

There are no new unread posts for this topic. Specialized shoe repair experiences

in Road

dgasmd

14

1154

Mon Jan 27, 2014 4:11 am

dgasmd View the latest post

There are no new unread posts for this topic. Cervelo rear drop out crack repair

in Road

Riccfs

4

889

Tue Oct 08, 2013 12:26 pm

em3 View the latest post


It is currently Thu Aug 21, 2014 1:51 am

All times are UTC + 1 hour




Advertising   –  FAQ   –  Contact   –  Convert   –  About

© Weight Weenies 2000-2013
hosted by starbike.com


How to get rid of these ads? Just register!


Powered by phpBB