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Madone compression plug

Old 04-18-10, 03:36 PM
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RacerOne
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Madone compression plug

I want to cut the steerer on my 2010 Madone 6.5. It's full carbon and has a compression plug. The plug is currently about 3/4" below the top of the steerer, right where I want to do the cutting. Do I just tap it down further into the steerer so it ends up 3/4" below my new cut or is there some other procedure?

Thanks
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Old 04-18-10, 04:41 PM
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Most plugs have a bolt in the center that expands the plug. It must be loosened to allow the plug to be lowered. There are some single-bolt models. In that case, tapping the center portion will loosen the plug, but it may fall to the bottom of the steerer, so you'll have to tip the steerer upside down to get it out.
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Old 04-18-10, 07:00 PM
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Mine appears to only have one hole in the middle, the same one the cap screw goes into. I'll post a few pics to make sure. Standby.
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Old 04-18-10, 07:13 PM
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if i am right, an allen wrench fits into the screw hole somehow to actually turn it. it is either slightly smaller than the hole, in which it will grab after the threads or you need a slightly bigger allen then the hole and it will lock in right before the threads of the hole.
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Old 04-18-10, 07:21 PM
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I'll go check, but there sure doesn't seem to be any allen hole in there.. uploading pics now.. dial up is great.
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Old 04-18-10, 07:37 PM
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Shoved as big an allen wrench as would fit in the threaded hole as far as it would go. Nothing down there.

Here are the pics:







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Old 04-18-10, 09:35 PM
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Put the bolt in and hit it gently to dislodge the wedge. It will fall to the bottom. No biggie. Cut the steerer then fish it out and reseat it. Done.
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Old 04-19-10, 06:32 AM
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I'm not really sure I could fish it out of there, the fork isn't open at the bottom, and does the metal sleeve move with it as well, as a unit? If I could only find a picture of one out of the steerer.
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Old 04-19-10, 06:35 AM
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Take the spring and top washer off. Install the top cap and bolt, then tap on the bolt, so it won't fall in.
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Old 04-19-10, 07:41 AM
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Originally Posted by RacerOne View Post
I'm not really sure I could fish it out of there, the fork isn't open at the bottom, and does the metal sleeve move with it as well, as a unit? If I could only find a picture of one out of the steerer.
See the slot on the sleeve? It will move, but you need to dislodge the wedge (center piece) first. Once you get the wedge loose, remove the sleeve, then turn bike upside down. Wedge will fall out. It's not fun putting it all back together. I do a couple of these a week, so I've been around this block before.
Good luck! :-)
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Old 04-19-10, 07:45 AM
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Ok, I get it, the wedge is compressing the sleeve, once the wedge is out the sleeve will be removable as well. That's a big help BikeWise1.. thanks!
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Old 04-19-10, 02:24 PM
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I screwed the bolt into the wedge and gently tapped on the top of the bolt. All of the aluminum bits you can see in the photo moved as one piece down into the steerer. They never came apart or fell into the bottom. So I just tapped it to where it would be out of the way for the cut, cut away, then put it all back together. I'm not sure that was the way it was supposed to work, and frankly I'm still not totally clear on what is holding that thing in there but it seems to work just fine. Thanks for the input guys.
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