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Bottom bracket... Strange style I haven't seen before?
#1
Good afternoon internet hive mind. A friend has inherited a bike that has a wobbly bit somewhere inside the bottom bracket. I'm taking bits from old bikes to cannibalise into a new one to make it rideable and to be honest the whole thing is a great learning experience for me anyway, but I've hit a problem. In the past I've removed the bottom bracket with the correct tools, then to remove the bit that contains the ball bearings I just use an adjustable wrench to unscrew it. On this bike it isn't nice and hexagonal shaped to allow a wrench to grip properly, it keeps sliding off. It looks like some kind of unique tool is needed, can anyone assist me in removing this so I can replace the bottom bracket? I've attached a picture of the offending bit.

[Image: bKx4sI5.jpg]
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#2
It looks like a cup-and-cone bottom-bracket to me - square taper axle and weird (well, not that weird) cups. See also (and linked sites therein)
http://sheldonbrown.com/tooltips/bbcups.html

Good luck!
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#3
(07-21-2016, 11:36 AM)Joe_W Wrote:  It looks like a cup-and-cone bottom-bracket to me - square taper axle and weird (well, not that weird) cups. See also (and linked sites therein)
http://sheldonbrown.com/tooltips/bbcups.html
Parktool hcw-11

Good luck!
  Reply


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