Whilst replacing a bottom bracket, I rounded off the inside of a seized crank hex bolt, and had to drill it out.
Now need a new crank bolt, and was considering buying self extracting crank bolts.
I'm sticking with the square taper cranks, and bottom bracket at the moment, and already have a self extracting crank tool.
Has anyone had an experience with self extracting crank bolts, are they any good, or am I better off sticking with standard crank bolts and using my extracting tool?
To me it seems like a lot of force to go through a hex bolt to remove bolt and crank arm at the same time.
Self extracting crank bolts
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Don't worry about dro - him only unnerstan dat pidgin englis fo'now, comin as e' don bak from de cari bein.
OTOH, I must confess to not knowing what a self-extracting crank bolt is. In the dark days of square taper BB axles, I found my (Park Tool) extractor seemed to work satisfactorily.
OTOH, I must confess to not knowing what a self-extracting crank bolt is. In the dark days of square taper BB axles, I found my (Park Tool) extractor seemed to work satisfactorily.
It's an ill wind that never blows at all.
Still umming and ahhing.
Might give em a go, and put plenty of grease on them.
But still concerned if the bolts sieze again, this time I wont be able to drill out and use crank puller, and its goodbye cranks.
As for bottom brackets, unbelievable I'm still on the 1st one (Shimano UN52/3) five years on, through the mud, several wheels, cassettes, and umpteen chains later. Bet the next one will last a month!
Might give em a go, and put plenty of grease on them.
But still concerned if the bolts sieze again, this time I wont be able to drill out and use crank puller, and its goodbye cranks.
As for bottom brackets, unbelievable I'm still on the 1st one (Shimano UN52/3) five years on, through the mud, several wheels, cassettes, and umpteen chains later. Bet the next one will last a month!