Bottom Bracket removal

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  • Does any know where I can get a tool for this BB or how I can get it off using standard tools or any general info that might help.

    Thanks for looking.

    Tom.

    p.s. Sorry for the bad pics.


    2 Attachments

    • IMG_6386.jpg
    • IMG_6387.jpg
  • I have a bottom bracket like this one:
    http://www.suginoltd.co.jp/english/product_bb_bbsg75_english.htm

    It is an old rusty steel frame and after spraying plenty of penetrating oil outside and inside the seat tube I cannot un-screw the bottom bracket caps. I try to start with un-screwing clockwise the drive side.
    Do I need a special tool? any suggestions?

  • Stefano if all else fails....

    bring it to me...I will weld a bar onto the cup itself and then you twist the bar to free the cup...

    I'm in hackney, it will cost a fiver and cake...or just really really good cake ok?

    thanks.

  • its a new decade and i just snapped an adjustable spanner you would have thought this shit would have got easier. oh well to the vice i suppose (i refuse to go to a shop!)

  • Even the proper Park Tool BB wrench is shit. I have a deformed little finger from when it slipped and crushed my finger between tile floor and metal bar (extra leverage on tool). Multiple other injuries. My most hated bike related task.

  • Even the proper Park Tool BB wrench is shit. I have a deformed little finger from when it slipped and crushed my finger between tile floor and metal bar (extra leverage on tool). Multiple other injuries. My most hated bike related task.

    that and headset races on forks...oh...it's like half a thou tooo big...and won't sit down that last half a mil.....back the bench/area of wall where I bang my head.....

  • Even the proper Park Tool BB wrench is shit. I have a deformed little finger from when it slipped and crushed my finger between tile floor and metal bar (extra leverage on tool).

    Chicks dig scars, and mangled fingers.

  • Even the proper Park Tool BB wrench is shit. I have a deformed little finger from when it slipped and crushed my finger between tile floor and metal bar (extra leverage on tool). Multiple other injuries. My most hated bike related task.

    chicks dig tile floors

  • After another painful incident I realise I need a better tool for fixed cup removal. Does anyone know of a tool similar to this cyclo removal tool:

    http://www.dotbike.com/productsP9436.aspx

    but less spendy?

  • Which tool you need depends on the make and model of your BB.
    That set contains all the various tools needed for different makes of BB so you are unlikely to need all of them.

  • Probably not. That's a tool for a modern square taper type of BB. But impossible to tell for sure without a picture of your BB. Older BB cups like your cottered one usually had cups with a couple of flat edges on them so you could undo them with a large spanner rather than special tools. A picture would help.

  • Bit of a rigmarole it seems.

    26tpi Raleigh Bottom Bracket, Punch and hammer or C Spanner takes it off (hopefully).

    Not sure theres much chance or retaining the old BB, which means the cottered cranks go west as well. So thats new cranks and new b+b to begin. If changing old 5 speed steel wheels over(geared) for new wheels and casette your getting really into the best part of a groupset and wheels as well.

    It's a 5 speed with single chain crank, so debating whether to just keep BB + cranks and run it as a fixed gear. Keep original wheels that way if I want to sell it, it can go back to a 5 speed and I can keep the track wheelset.

    The other way is getting me into dropping serious money, I'd rather do that with a much swankier frame than an old carlton. hmmmm just as I sell my old fixed gear, I end up building a new one lol

  • Hi guys, wanting to remove a BB, it's from a 1970 Claud Butler, but don't know which tools to use. The cranks it was attached to were cottered. Help appreciated.

    http://flic.kr/p/8Xp6Xd
    http://flic.kr/p/8Xp7aJ

  • you'll need a lockring tool (same as for the track lockring) and a 22 pin adjustable spanner

  • you'll need a lockring tool (same as for the track lockring) and a 22 pin adjustable spanner

    I know what a lockring tool is, although I'm having trouble finding a 22 pin adjustable spanner anywhere. A link would be mucho appreciadado hombre.

  • I know what a lockring tool is, although I'm having trouble finding a 22 pin adjustable spanner anywhere. A link would be mucho appreciadado hombre.

    didn't want to offend in any way about that lockring tool, sorry :-)

    i think this one from chainreaction should do:

    http://www.chainreactioncycles.com/Models.aspx?PartnerID=79&ModelID=17508

    i missed that you will need alarge aperture adjustable spanner or a headset spanner like this one:

    http://www.simpsoncycles.co.uk/product.php/1424/headset_spanner_30_32___36_40mm

    to removve the drive side cup.

    once you do that then spray a lot off penetrant like wd40 or plus gas onto the other undo first the lockring anticlockwise and then remove the cup using that 2 pin adjustable spanner again anticlockwise.

    hope it helps :-)

  • Hello All

    Another frustrated BB removal failure here. My girlfriend is VERY attached to her Falcon Sorrento ladies stepthrough due to the colour more than anything else. It has a loose BB that won't tighten up and won't come off. Turning the right way, soaked in WD 40, placed in vice, ruined various spanners, scraped knuckles, weeped, but not budged it a thousandth of a mm.

    Anyone got bright ideas/dremel/welding gear? Ideally I would remove it and replace it with a non-cottered set-up but if it came off and just needed new ballbearings that would obviously save some wedge.

    Cheers

  • If you are not bother about the paint work, try using a blowtorch on the shell, getting it very hot and hopefully breaking the seal between the two threads through different expansion/contraction rates.

    *hrmm just saw that g/f likes the colour, - maybe not best idea then

  • Thanks anyway! Really I am looking for someone who is confident they can get the damn thing off so that I can pay them to get me past this point and start installing new parts. Don't want to go to my LBS cos it is Condor and I can't bring myself to wheel the Falcon in there. Plus I know they would just tell me to junk it - and I'd agree!

  • Hi guys, got a pretty common problem here!

    Bottom bracket is well and truly stuck! Ive searched around a bit but I dont really know what im searching for. Basically the tool I use just slips when i try and put a lot of force on it, is there such thing as a bolt that goes through the back of the bb tool and into the axel allowing you to tighten it in place so the bb tool is attached and cant slip

    hope this makes any sense at all, its a shimano splined bb

    thanks!

  • Yes.
    If the axle is hollow use a skewer, if it is not hollow use the original crank bolts (only finger tight) and some M8 x 1.5mm washers to hold the BB tool in place.
    Then get stuck in with the biggest fuck off spanner you can get your mitts on and boss it off.

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Bottom Bracket removal

Posted by Avatar for Conan @Conan

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