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PostPosted: Tue Feb 11, 2014 8:36 am 
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Joined: Sun Feb 03, 2008 4:40 pm
Posts: 187
Location: Singapore
Hi All,

Currently running a MCFK carbon steer tube on my 2011 Flash with a Lefty DLR fork. I have tried to remove the steer tube (in order to remove the fork from the frame), but I am unable to get it out. Seems to have seized up with the bearings in the head tune. Any good ideas how to get it out without destroying the MCFK steer tube?

Thank you

seismic


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PostPosted: Tue Feb 11, 2014 10:14 am 
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Joined: Mon Mar 09, 2009 5:38 pm
Posts: 250
Location: Hampshire, UK
Sure you have but just to check - you've loosened all the bolts on the crowns? I'd spray and soak with WD40, GT85 or another penetrating liquid and then tap out gently with a rubber mallet


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Posted: Tue Feb 11, 2014 10:14 am 


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PostPosted: Tue Feb 11, 2014 10:30 am 
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Joined: Sun Feb 03, 2008 4:40 pm
Posts: 187
Location: Singapore
Yes, unfortunately I already tried that.


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PostPosted: Tue Feb 11, 2014 8:56 pm 
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Joined: Thu Oct 26, 2006 8:54 pm
Posts: 471
Location: USA
Can try heat and cold also... heat steerer with hairdryer, then pack with ice... then repeat. That should cause the steerer to expand and contract slightly and might loosen things up a bit. Other than that, I think you are definitely looking at a rubber mallet job. Rather than hitting the thin fragile top of the steerer tube, I'd suggest building up enough of a spacer stack so that they extend above the steerer top and your blow is then transferred by the spacers to the large carbon shim that takes up the space between the 1.5" upper bearing and upper lefty clamp and the inner 1.125" tube. That ought to minimize the chances of damaging the steerer, and apply the force to where the sticking is occurring. Done in this way I wouldn't be afraid to give it a pretty decent whack...

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Enjoying my Funk


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PostPosted: Wed Feb 12, 2014 11:14 pm 
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Joined: Wed Feb 12, 2014 10:23 pm
Posts: 11
Without pictures it's hard to tell what's going on.

Is there a compression ring in the top bearing still? Sometime these become a little corroded onto the steerer and the action of tapping the steerer down and out has little to no effect because it's effectively wedging itself in tighter. Have a look at this area closely, you may be able to remove the ring without force.

In the past I have removed the fork by first tapping the fork upwards (hitting underneath the CSU) to dislodge the compression ring. And then you can get it out easily.

Hope this helps


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Posted: Wed Feb 12, 2014 11:14 pm 


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PostPosted: Thu Feb 13, 2014 2:00 am 
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Joined: Fri May 12, 2006 2:11 pm
Posts: 1319
Location: Stockholm, Sweden
Beat it out and buy one from Experimental Prototype instead? Worked great for me and no problems to get it out.

Probably some grease made the carbon "glue" itself to the fork.

_________________
/jonas l
http://cerrol.wordpress.com (my cyclingblog)


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