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Stuck stem on old bike
Hi guys, this is my first post so I hope I'm putting it in the right place.
Also had a quick look around the site and couldn't find he answer so here it goes.
Picked myself up a little project, and old 70's/80's road bike (British I think)

I have been taking it apart with the idea of slowly fixing it up, I have completely stripped it down, almost ready to strip the paint, my last thing is the stem which seams to have somehow sealed itself to the forks.
There is a Allen bolt at the top which is very stiff and now become worn with my efforts to get it to loosen.


Any tips or help would be very much appreciated. I don't know a huge amount as this is my first venture/experiment

Cheers guys and looking forward to learning a lot from these forums

Hi Jo;

You need to loosen (counterclockwise) the bolt a few turns, so that there is clearance underneath the head of the bolt, then put a block of wood on top of the bolt, and hit with a hammer until there is no clearance under the head of the bolt. Repeat until stem is loose.
Hi Nigel

Thanks for the tip, I will keep trying but I currently can't loosen the bolt at all, the head of the bolt has worn away so an Allen key just slips through rather than getting a proper purchase on it.


Hi Jo;

Okay, bolt is shot; what about the stem - are you trying to salvage it, or scrap it?

1. soak around outside edge with a penetrant; let sink in, reapply several times.
2. using a motor tool with a cutoff wheel, cut a slot in the bolt head to engage a big screw driver bit in a socket set.
3. follow procedure in my previous post.

1. use angle grinder to cut the stem through just below the handle bar mount.
2. check the remains of the bolt; if loose you should be able to pull off the remains of the stem. If tight, hammer it lightly with a center punch until loose.

If scrap, then I would use one of these:
which allows the use of the now standard 1 1/8" like this one:
which is available in lots of different lengths and angles.
This is fantastic thank you!
Wasn't going to bother salvaging it so this is great and thank you so much for the recommendations I will look into them Smile

Is there anyway to give kudos etc on this site because you've been great!


Thank you Smile

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