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Stuck chainring stack bolt?

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Stuck chainring stack bolt?

Old 09-04-06, 12:11 AM
  #1  
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Stuck chainring stack bolt?

I am trying to center my chainring as described here under chain tension:

https://sheldonbrown.com/fixed.html

but one of the stack bolts is stuck. It just turns in the crank spider, and will not loosen. What sort of tool am I supposed to use to hold the back side of the bolt (with the two slots across from each other) still while I turn the front side (the 5mm hex)? Or is there some other trick to this?

Hopefully I'll have this damn bike together tomorrow... so close.
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Old 09-04-06, 12:20 AM
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Big-ass screwdriver?

They make special chainring bolt tools, but a screwdriver should work.
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Old 09-04-06, 12:50 AM
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yeah, here's a huge picture of one.
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Old 09-04-06, 10:15 AM
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chainring bolt spanner mmmmm
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