Join Date: Apr 2009
Location: New Rochelle, NY
Bikes: too many bikes from 1967 10s (5x2)Frejus to a Sumitomo Ti/Chorus aluminum 10s (10x2), plus one non-susp mtn bike I use as my commuter
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Unless there's an issue of chainring selection, you can simply remove the third chainring. Ideally you'd want to move the crank inboard by about 3mm to correct the chainline difference (assumes it was right in the first place), but in many cases it isn't necessary.
If you do replace the crank, you may or may not need to replace the bottom bracket or spindle depending on what the new crank calls for.
An ounce of diagnosis is worth a pound of cure.
“Never argue with an idiot. He will only bring you down to his level and beat you with experience.”, George Carlin
“One accurate measurement is worth a thousand expert opinions”
- Adm Grace Murray Hopper - USN
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