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Old 12-28-06, 04:24 PM   #1
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Tips/tools for changing chainrings?

I'm not too bad and doing minor adjustments on my bike, but I have never changed chainrings. Anything to beware of? I'm thinking need some kind of torque allen wrench. Is that all I need?
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Old 12-28-06, 04:27 PM   #2
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A 5mm allen and maybe the chainring bolt tool from park. Fairly straight forward to do.
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Old 12-28-06, 04:39 PM   #3
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Quote:
Originally Posted by Cynikal
A 5mm allen and maybe the chainring bolt tool from park. Fairly straight forward to do.
Quote:
chainring bolt tool from park
What does this do? I there some type of torsional limit on how how tight you should tighten the bolts.
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Old 12-28-06, 05:23 PM   #4
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The tool will hold the rear of the chainring bolt in place while you tighten. I've never used a torque wrench on these bolts. If you are really nervous about it, go have your LBS do it and ask them to watch.
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Old 12-28-06, 05:31 PM   #5
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Here's your torque values page.

Grease the chainring bolts first....

http://www.parktool.com/repair/howtos/torque.pdf

BTW: some people swear by torque wrenches for bikes. Some people spit at the idea.
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Old 12-28-06, 06:03 PM   #6
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The chainring bolt tool will also help secure the nut while you loosen the bolt, if it is on there really tight. A torque wrench might be overkill, as long as you check for tightness on a regular basis; nothing catastrophic can happen unless all 4 or 5 bolts come loose in a major way at the same time.
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