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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
http://www.ebay.com/itm/PARK-BIKE-HCW-11-ADJUSTABLE-BOTTOM-BRACKET-WRENCH-TOOL-/381689280744?hash=item58de7438e8:g:2LEAAOSwpDdVbwWo
This is the tool, may still be hard to take off if seized at all. if you can remove the other cup and spindle. It may be possible to use a threaded rod or long bolt, couple of nuts and washers to pinch the cup and spin it out that way. It could then be replaced with a more modern cartridge style

https://www.youtube.com/watch?v=Oa8ztfXcHkg
There are two kinds of people in the world, "Those who help themselves to people, and those who help people!"
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#3
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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#4
(07-21-2016, 07:36 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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