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Octalink BB doesnt fit

dav1dav1 Posts: 1,298
edited June 2008 in MTB workshop & tech
I am trying to fir an octalink BB to my frame but with 3 - 4 threads left the cup become very tight and i cant tighten it further.

Its a 68mm BB and i measured the BB shell to be the same size.

I have been following the instructions on park tools
Giant TCR advanced 2 (Summer/race)
Merlin single malt fixie (Commuter/winter/training)
Trek superfly 7 (Summer XC)
Giant Yukon singlespeed conversion (winter MTB/Ice/snow)

Carrera virtuoso - RIP

Posts

  • nicklousenicklouse Posts: 50,675 Lives Here
    threads on the shell damaged? have you cross threaded it?

    get the LBS to check it out.

    Oh you have not fully tightened the drive side? slacken the drive side off a few turns.
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown
  • dav1dav1 Posts: 1,298
    ok i have slakend the drive side off a few turns and the cup now goes in easily, now the drive side is sitting out slightly.

    How much force should i need to get it in correctly?
    Giant TCR advanced 2 (Summer/race)
    Merlin single malt fixie (Commuter/winter/training)
    Trek superfly 7 (Summer XC)
    Giant Yukon singlespeed conversion (winter MTB/Ice/snow)

    Carrera virtuoso - RIP
  • nicklousenicklouse Posts: 50,675 Lives Here
    so now tighten the drive side till it is snug against the shell.

    It is not an 68mm E type bb is it?
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown
  • dav1dav1 Posts: 1,298
    edited June 2008
    I will have to check the BB when i get home, It is the one that came in a merlin cycles deore grouset so i just assumed it was the correct one.

    I didnt see it say e-type on the shell but that would explain it if it was.

    Thanks for the help.
    Giant TCR advanced 2 (Summer/race)
    Merlin single malt fixie (Commuter/winter/training)
    Trek superfly 7 (Summer XC)
    Giant Yukon singlespeed conversion (winter MTB/Ice/snow)

    Carrera virtuoso - RIP
  • hoathyhoathy Posts: 776
    a e-type is about 2.5mm wider to fit in the band on the e-type front mech, so it won't fit unless you used some sort of spacer perhaps.
    - Kona Hot '96 - Marin Rift Zone '09 - Cannondale Synapse Carbon '06 - Kona Caldera '98 - Kona AA '94 - Dawes Kickback II - Cannondale BadBoy '11 - Genesis iOiD SS -
  • SplasherSplasher Posts: 1,528
    If you need a spacer, an HTII spacer is 2.5mm and IIRC the spacer used to space cassettes on freehubs is exactly the same diameter and thickness and so would do equally if you have one in your toolbox.
    "Internet Forums - an amazing world where outright falsehoods become cyber-facts with a few witty key taps and a carefully placed emoticon."
  • dav1dav1 Posts: 1,298
    I remember seeing an E on the writing on the outside of the non-drive cup come to think of it.

    May be LBS time to grab a spacer or if it its more then the cost of postage it will be another retuen to merlin...
    Giant TCR advanced 2 (Summer/race)
    Merlin single malt fixie (Commuter/winter/training)
    Trek superfly 7 (Summer XC)
    Giant Yukon singlespeed conversion (winter MTB/Ice/snow)

    Carrera virtuoso - RIP
  • hoathyhoathy Posts: 776
    you might get away with a different non-drive side cup if you have one that looks suitable.
    - Kona Hot '96 - Marin Rift Zone '09 - Cannondale Synapse Carbon '06 - Kona Caldera '98 - Kona AA '94 - Dawes Kickback II - Cannondale BadBoy '11 - Genesis iOiD SS -
  • dav1dav1 Posts: 1,298
    Not sure the old would fir TBH.

    I just went to my LBS and got a spacer, question now is what side to put it on?

    Do i need to mimic the position of the hanger by mounting drive side
    or
    do i need the BB flush for correct chain line by using it non-drive?

    I did ask at the LBS and the guy wan't sure.
    Giant TCR advanced 2 (Summer/race)
    Merlin single malt fixie (Commuter/winter/training)
    Trek superfly 7 (Summer XC)
    Giant Yukon singlespeed conversion (winter MTB/Ice/snow)

    Carrera virtuoso - RIP
  • nicklousenicklouse Posts: 50,675 Lives Here
    what is the part number on the BB.

    lets start at the beginning.
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown
  • dav1dav1 Posts: 1,298
    It is an ES31
    Giant TCR advanced 2 (Summer/race)
    Merlin single malt fixie (Commuter/winter/training)
    Trek superfly 7 (Summer XC)
    Giant Yukon singlespeed conversion (winter MTB/Ice/snow)

    Carrera virtuoso - RIP
  • nicklousenicklouse Posts: 50,675 Lives Here
    and the rest of the info on the BB? there are more than one ES31.....
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown
  • SplasherSplasher Posts: 1,528
    I can't find any info on an ES31. An BB-ES30-E is an E-type and a BB-ES30-K is a standard type if that helps. If it is an E-type, you put the spacer on the drive side to mimic the front mech band.
    "Internet Forums - an amazing world where outright falsehoods become cyber-facts with a few witty key taps and a carefully placed emoticon."
  • supersonicsupersonic Posts: 82,708 Lives Here
    The 31 was a slightly newer Deore level octalink - as you say, need to know wheter he's on Es or Ks.
    GT ZASKAR CARBON TEAM

    VOODOO CANZO

    Come and see me at https://www.facebook.com/biketyke/
  • dav1dav1 Posts: 1,298
    Ok got it here:

    BB says

    BB-ES30
    68AK
    BC 1.37x24

    L <-- 121 --> R


    On the cup it says BC 1.37x24 68E
    Giant TCR advanced 2 (Summer/race)
    Merlin single malt fixie (Commuter/winter/training)
    Trek superfly 7 (Summer XC)
    Giant Yukon singlespeed conversion (winter MTB/Ice/snow)

    Carrera virtuoso - RIP
  • supersonicsupersonic Posts: 82,708 Lives Here
    I think you might have the non E type bottom bracket with a an E type LH cup!

    I'd wait for someone else to confirm ;-)
    GT ZASKAR CARBON TEAM

    VOODOO CANZO

    Come and see me at https://www.facebook.com/biketyke/
  • SplasherSplasher Posts: 1,528
    When you say the cup, is it the one that is fixed onto the BB or the loose one that says that?
    "Internet Forums - an amazing world where outright falsehoods become cyber-facts with a few witty key taps and a carefully placed emoticon."
  • dav1dav1 Posts: 1,298
    loose

    If it was a standard BB with an E type cup that wouldn't at all surprise me at this stage :p
    Giant TCR advanced 2 (Summer/race)
    Merlin single malt fixie (Commuter/winter/training)
    Trek superfly 7 (Summer XC)
    Giant Yukon singlespeed conversion (winter MTB/Ice/snow)

    Carrera virtuoso - RIP
  • SplasherSplasher Posts: 1,528
    Does it look like this?

    2583967239_121763492f.jpg
    "Internet Forums - an amazing world where outright falsehoods become cyber-facts with a few witty key taps and a carefully placed emoticon."
  • dav1dav1 Posts: 1,298
    yes but mine measures 71mm from inside of the cups both sides. (looks like 69 on yours for the same point to the same point)

    The thread on my loose cup measures about 15mm, or 18mm from inside to where the whole thing ends.
    Giant TCR advanced 2 (Summer/race)
    Merlin single malt fixie (Commuter/winter/training)
    Trek superfly 7 (Summer XC)
    Giant Yukon singlespeed conversion (winter MTB/Ice/snow)

    Carrera virtuoso - RIP
  • SplasherSplasher Posts: 1,528
    My loose cup measures about the same (70 - 52 = 18mm) I reckon your fixed cup thread will be about 13mm in which case I reckon it is an e-type BB and you need to put the spacer on the fixed side.

    Can't say for definite without seeing it but that's where I'd put my money.
    "Internet Forums - an amazing world where outright falsehoods become cyber-facts with a few witty key taps and a carefully placed emoticon."
  • dav1dav1 Posts: 1,298
    my fixed side measures about the same as yours.

    looks like my loose cup threads are 2mm longer @ 15 (yours look like (56-69 so 13mm), and the whole cup looks about 1.5 mm longer (52.5-69 16.5mm?).

    on the fixed side they measure 10mm threads which looks the same as yours.

    Tried to take a pic but my ruler markings didnt come out.
    Giant TCR advanced 2 (Summer/race)
    Merlin single malt fixie (Commuter/winter/training)
    Trek superfly 7 (Summer XC)
    Giant Yukon singlespeed conversion (winter MTB/Ice/snow)

    Carrera virtuoso - RIP
  • nicklousenicklouse Posts: 50,675 Lives Here
    do you have the old bb lose cup?
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown
  • dav1dav1 Posts: 1,298
    yes it is from a square taper BB though and the cup went right inside the shell, will it be suitable?

    If not can i use the spacer on the new loose cup?
    Giant TCR advanced 2 (Summer/race)
    Merlin single malt fixie (Commuter/winter/training)
    Trek superfly 7 (Summer XC)
    Giant Yukon singlespeed conversion (winter MTB/Ice/snow)

    Carrera virtuoso - RIP
  • nicklousenicklouse Posts: 50,675 Lives Here
    i would finger fit the bb not the whole way but most, then fit the old loose cup till flush, and then tighten home the drive side followed up by nipping the non drive side.

    fit cranks and then check the chainline.
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown
  • dav1dav1 Posts: 1,298
    tried it and I am left with a small gap drive side which i can push a fingernail into, is that OK or is it essential that it is completely flush?

    thanks again
    Giant TCR advanced 2 (Summer/race)
    Merlin single malt fixie (Commuter/winter/training)
    Trek superfly 7 (Summer XC)
    Giant Yukon singlespeed conversion (winter MTB/Ice/snow)

    Carrera virtuoso - RIP
  • nicklousenicklouse Posts: 50,675 Lives Here
    back of the non drive side until you can bottom out the drive side.
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown
  • dav1dav1 Posts: 1,298
    seems to have worked OK, I have been able to fit the cranks to the correct line and they are solid.

    cant thank you enough for the help, my riding this week is now saved :D
    Giant TCR advanced 2 (Summer/race)
    Merlin single malt fixie (Commuter/winter/training)
    Trek superfly 7 (Summer XC)
    Giant Yukon singlespeed conversion (winter MTB/Ice/snow)

    Carrera virtuoso - RIP
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