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PostPosted: Tue Jan 19, 2010 12:09 am 
retrobike rider / Gold Trader
retrobike rider / Gold Trader
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Joined: Fri Feb 06, 2009 11:13 pm
Posts: 9726
Location: Skipton
Glad it's coming together. :D


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 Post subject:
PostPosted: Tue Jan 19, 2010 11:55 am 
Gold Trader / PoTM Winner / RB Rider
Gold Trader / PoTM Winner / RB Rider
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Joined: Thu Apr 10, 2008 4:16 pm
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Location: brigg, home of the gypsies
brocklanders023 wrote:
Glad it's coming together. :D


cheers.

bottom bracket is going to be a pain but i am going to get my mate to weld a nut onto the cups so we can swing off a big spanner and remove that way (in theory...)


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PostPosted: Tue Jan 19, 2010 10:27 pm 
Dirt Disciple

Joined: Sun Dec 06, 2009 10:34 pm
Posts: 57
With my bb on my Bobcat it would just not move, then the plastic non-drive side cup shattered allowing my thumb to be pinched between spanner and frame.

So I then used an M8 bolt from an old seat post to hold the bb tool in place. Finally I extended my adjustable spanner by using a couple of jubilee clips to attach a long seatpost (that the M8 bolt came from) to increase the leverage. I'm not sure if the thread on the M8 bolt was the same at the thread in the bottom bracket but with a bit of force it seemed to screw in far enough. Basically I bodged it with a bit of logical thinking and advice from other bike forums.

End result is that it came out nicely. I then hacked at the broken plastic cup with various tools not designed for the job and got that away without damaging the threads.

Lewis


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 Post subject:
PostPosted: Tue Jan 19, 2010 10:40 pm 
SotS Winner
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Joined: Wed Jan 09, 2008 2:23 pm
Posts: 1775
Location: Grazed and amused
widow71 wrote:
With my bb on my Bobcat it would just not move, then the plastic non-drive side cup shattered allowing my thumb to be pinched between spanner and frame.

So I then used an M8 bolt from an old seat post to hold the bb tool in place. Finally I extended my adjustable spanner by using a couple of jubilee clips to attach a long seatpost (that the M8 bolt came from) to increase the leverage. I'm not sure if the thread on the M8 bolt was the same at the thread in the bottom bracket but with a bit of force it seemed to screw in far enough. Basically I bodged it with a bit of logical thinking and advice from other bike forums.

End result is that it came out nicely. I then hacked at the broken plastic cup with various tools not designed for the job and got that away without damaging the threads.

Lewis


:lol: :lol: :lol:


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 Post subject:
PostPosted: Mon Feb 15, 2010 11:30 am 
Gold Trader / PoTM Winner / RB Rider
Gold Trader / PoTM Winner / RB Rider
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Joined: Thu Apr 10, 2008 4:16 pm
Posts: 9609
Location: brigg, home of the gypsies
ended up resorting to heat on the bottom bracket. the cups were made out of monkey metal and just melted away. sadly the heat did damage the paint and also the threads were knackered anyway.

to sort it i bought a threadless bottom bracket

it screws into itself rather than remling on the frame and seems a sensible solution to the problem if you ask me. time will tell if it is a long term solution though.

anyway. this was the final piece of the puzzle and all that was left to do was build it up.

cheers to longun for the karma seatpost.

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