Help:- Removing bars from Cinelli stem

[deanhempshall]

I have a Cinelli Gios panto stem which i want to remove the bars from, but i'm struggling.

I have undone the allen bolt (completely removed it) and the bars will not budge, they won't even rotate.

Has anyone got any ideas for removing them?

 

[foz]

looks like you already got them out?

If your stem is the same model as the one in the pic, then the only thing I can think of is lots of penetrating oil, a long wait, and then hoping they budge. I'd expect some scratches on the bars too, since there's no way to make the stem clamp any larger.

Do you need the bars too, or just the stem? The bars might need cutting up to get them out, if they won't move any other way.

 

[deanhempshall]

looks like you already got them out?

If your stem is the same model as the one in the pic, then the only thing I can think of is lots of penetrating oil, a long wait, and then hoping they budge. I'd expect some scratches on the bars too, since there's no way to make the stem clamp any larger.

Do you need the bars too, or just the stem? The bars might need cutting up to get them out, if they won't move any other way.

Just the stem really, obviously if the bars come out without too much hassle i'll sell them.

I'll get some penetrating oil on it and try it.

 

[mattr]

Is the clamping mechanism on that steel?
i.e. a steel block/wedge in an aluminum guide (stem) clamping onto an aluminium tube?

If Itit's, I'd just chuck the biggest pan of boiling water I have in the house over it, then grab hold of it (Wearing a pair of gloves obviously) and give it a good smack, wiggle and twist.

If that doesn't work, a bit of chill/heat on it might work.

 

[Old Ned]

I also reckon that the clamping 'wedge' inside the stem is possibly corroded/stuck, maybe to both the bars and the stem. Plenty of penetrating oils (Plus Gas etc.) around the bar/stem interface and up inside the bolt hole and, after a good soak for a day or so, light taps etc. to try and dislodge it.

The heat and chill method is also a good idea

 

[dyna-ti]

Are the bars to be kept ?
If not id suggest cutting off one or both sides leaving a stub with a flat end. Hold or brace the stem and wallop the flat end. I'd even look to support the stem against something hard.
Sometimes its just a matter of hitting it harder :?
It the bond is so tight that even using the drop to get a grip and it starts to bend then is sounds like something of the 2 will have to be sacrificed

 

[deanhempshall]

Are the bars to be kept ?
If not id suggest cutting off one or both sides leaving a stub with a flat end. Hold or brace the stem and wallop the flat end. I'd even look to support the stem against something hard.
Sometimes its just a matter of hitting it harder :?
It the bond is so tight that even using the drop to get a grip and it starts to bend then is sounds like something of the 2 will have to be sacrificed

The bars hands down. I'm replacing the bars with a set of 3ttt ergo power due so if worst comes to worst i'll sacrifice the bars.

 

[deanhempshall]

Re:

Managed to loosen them off, just needed some brute force and lube

 

[dirttorpedo]

Re: Re:

Managed to loosen them off, just needed some brute force and lube

Sounds like a great name for a band.