Last year I heard that Dura Ace had upgraded their bottom brackets to a new design needing less maintenance. I bought a couple from one of the big suppliers.
Today I finally got around to replacing the DA bottom bracket on my five year old road bike which has many thousands of miles on it. I had no particular reason to replace it, it just seemed to be overdue. As far as I could tell, the old BB was identical to the new one. I am very confused. They are both labeled BB-7700. Both BBs required that special wrench that locks into those eight teeth cut out of the lock rings.
Did I get the old design BB? Is it hard to tell the difference? Does anyone know what I am talking about?
Clueless in Florida.
Today I finally got around to replacing the DA bottom bracket on my five year old road bike which has many thousands of miles on it. I had no particular reason to replace it, it just seemed to be overdue. As far as I could tell, the old BB was identical to the new one. I am very confused. They are both labeled BB-7700. Both BBs required that special wrench that locks into those eight teeth cut out of the lock rings.
Did I get the old design BB? Is it hard to tell the difference? Does anyone know what I am talking about?
Clueless in Florida.