Stripped campy chainring bolt...suggestions??

[Kingfisher]

I know this has to have been discussed previously, but can't find anything. Anyway, any advice appreciated for getting out a stripped campy record (circa 1996) chainring bolt?

[AndrewS]

The hidden bolt or the others? Stripped thread, or stipped allen?

[Kingfisher]

Actually there are two,, allen head stripped on both, one is the one on the crankarm.

[AndrewS]

Well, there's lot's of things you can do, depending on your comfort level and skill.

A dremel cutting disk can be used to cut a slot across the bolt face that a screwdriver or something else flat can be wedged into.

You can also completely degrease and epoxy in an allen wrench. Let it set completely, then turn.

Eze-outs are going to be a pain, but are designed for this.

The non-blind bolt could be drilled out.

Sometimes a torx head of the right size can be pounded into a worn allen hole and will get enough purchase.

[Mike748]

I would drill them. If they are aluminum they will be easy to drill. Get a bit thats about the same size as the minor diameter of the thread and drill in from the front. The stripped out hex will center the drill for you. Your goal is to separate the head from the shank of the bolt. Then you can tap it out with a punch the rest of the way.

[sean]

+1

[Kingfisher]

got em out!! banged in a torx wrench to get one and used a drill and then forced in a larger old allen wrench and it came out fine....thanks to all the suggestions