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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The possibly missing washer is the key to your problem. These cranks worked fine for decades without adhesives, so if yours keeps loosening, it might be that either you forgot the washer, are using one whose key on it is sheered off. The system depends on keying the washer to the crankshaft so the cone and locknut cannot rotate together.
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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