Easy Outs are good tools, but I doubt that one would be of much help here. The opening at the back side of the fastener is the bolt - the same bit that presents the hex opening in the front. Since Tom hasn't described a stripped hex opening the easy out won't offer anything. It's the nut with two small slots that's yielding to the tool.
An Easy Out would be a splendid tool to grab a rounded-out hex opening, though.
Ed
> Tom and the gang,
>
> The 5 mm allen in the vise sounded good but for professional problems (as
you
> have) you need professional strength solutions.
>
> You need a good "easy out"... A reverse spiraled one sort of like a drill
bit
> or the sharper square tapered sharp edged one that cuts (best for this)
INTO
> THE OFFENDING PARTS! Hammer or tap the easy out into the frame side of the
> offending chainwheel bolt. Then clamp the "easy out" shoulder in to a big
> vise (remove the crank first if you please). Insert the allen key (5 mm)
into
> the 5 mm hole on the outside of the crank. Use a cheater bar or tube on
the
> allen key and turn the allen key counter clockwise and remove the
chainwheel
> bolt or break it in half. Either way success is within your grasp.
>
> Regards,
>
> Gilbert Anderson
> "Not too much snow this morning but your results may vary"
> Raleigh NC
>
>
>
> In a message dated 1/9/01 3:21:17 PM, hayesbikes@nls.net writes:
>
> <<
> I have used the appropriate Campagnolo took with the little prongs; one of
> the backside slots is now slighly mangled. The bolt and fastner keeps
> turning together, and I cannot find a tool, or any other device--already
> tried a large screwdriver-- that will fit the slots that I can hold
> sufficently tight to loosen the screw with the hex wrench. I've tried
> needle nose pliers holding the backside, used enough liquid wrench. I've
> exhausted my limited understanding of tools and bankrupted my equally
> limited imagination for devising some >>