What you'll need:
-chainring bolts and nuts
-5mm hex wrench
-a clamp, vise, or the ability to use two hands
-a file or dremel
1) Thread your chainring bolt into the back of the nut a few turns, like so.
2) Slide the chainring bolt onto your 5mm hex wrench.
3) Either secure the hex wrench to your table, a vise, or even hold it with your hand.
4) Run a fine file across the nut approximately 20 times.Congrats, now your chainring nut is likely short enough for a single chainring on a double crank. If not, file some more.
|The finished product with a magnet to collect filings.|