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-   -   stuck chainring bolt... (https://www.bikeforums.net/bicycle-mechanics/68741-stuck-chainring-bolt.html)

slopvehicle 10-01-04 01:50 PM

Hey hey,

I'm wrenching on a beater SS I picked up today for $5.

I've got a stuck, rusted together middle/outer chainring bolt -- the kind that threads into the nut on the inside of the spider (double-stack bolts here). I've doused it with penetrating oil and all that, but it just spins instead of unscrews.

There's that slot in the back, of course. Holding it with a flathead screwdriver isnt' helping. There isn't some special tool for this, is there? I've always used a screwdriver, just never had one so tightly stuck.

update-- never mind, spoke too soon. got the bolt out.

BlastRadius 10-01-04 04:57 PM

I had one that wouldn't budge I think it was cross threaded at the factory since the cranks were new. I had to drill it out.

jeff williams 10-01-04 06:15 PM

Yes there is a tool, go to a lbs, 'bout 5-7$.

Mines a Shimano TL-fC20 http://www.cambriabike.com/SALE/tool...nring_tool.htm

twahl 10-01-04 06:59 PM

There is a tool for it that might help you get more leverage. May end up drilling it out, use a drill bit that's slightly smaller than the bolt hole in the chainring. Or, if you are exceptionally talented with a Dremel tool, use a cutoff wheel to cut the fange from the chainring bolt and punch it through.


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