Bike Forums - View Single Post - [Front crankset] Replacing outer ring with chain guard?
Old 05-22-20, 05:46 PM
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Tourist in MSN
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Bikes: 1961 Ideor, 1994 Bridgestone MB-6, 2006 Airnimal Joey, 2009 Thorn Sherpa, 2013 Thorn Nomad, 2015 VO Pass Hunter, 2017 Lynskey Backroad, 2017 Raleigh Gran Prix, Perfekt 3 Speed -age unknown, 1980s Bianchi Mixte on a trainer. Others are now gone.

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Originally Posted by 1nterceptor View Post
I've seen folks grind the teeth of the outer rings on a double; making it a guard/protector.
Originally Posted by rhenning View Post
I think this is funny but a couple of years ago I need a chain guard for on of my folders that had a broken plastic chain guard. I actually made a chain guard out of a 54 tooth chain ring that I filed the teeth off of. Roger
I used a saber saw. I bought a cheap chainring that was a lot cheaper than a chainguard ring. Cut the teeth off with a saber saw. That of course left a rough cut. Put the ring on the crank arm and hand turned the crank for about 10 or maybe 15 minutes while I held a file on the rough cut until it was quite smooth.

Saber saw, I used a fine tooth metal blade, the aluminum clogged up the teeth, I might have used two blades. But I had plenty of blades so that was not a problem.

Aluminum is not that heavy, works well for me.

Photo is old, later I decided to spray it black to match all the other black stuff. This is obviously not a folder. The chainring I cut was a 52T, the chainring behind it in the inner position on the double crank is a 44T. The guard is a bit bigger than ideal, but it is close enough that I have no desire to replace it.


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