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New BB fettling

mrc1mrc1 Posts: 852
edited July 2013 in Commuting chat
Order a new SRAM BB BSA Thread

Old BB didn't have any spacers, worked like a dream and lasted from Feb 2011 (thousands and thousands of miles including RAAM and being used a rental bike for LDT for 1.5 seasons). Probably still has some life left in it but it was starting to feel a bit tired when grinding up climbs.

Fitted it as per the old one and it works beautifully - no play whatsoever. Scanned the instructions after fitting and they suggest I should have used the spacers (68mm width = spacers required). So out of curiosity I remove BB, fit the spacers and then refit the cranks. Start to tighten them up and before they get any decent purchase the spacers seize the whole assembly solid.

Not a major issue as I know it works fine without them but anybody got any ideas why they say they are needed when clearly they aren't?
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Posts

  • nicklousenicklouse Posts: 81,520 Lives Here
    is it a road bike? if yes you are looking at the MTB fitting info.
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown
  • mrc1mrc1 Posts: 852
    It is indeed a road bike.

    Only have one set of instructions (which do have an mtb in top corner though now I have looked)... Guessing the road ones are missing from my pack.

    Lesson learnt though - continue ignoring instructions!
    http://www.ledomestiquetours.co.uk

    Le Domestique Tours - Bespoke cycling experiences with unrivalled supported riding, knowledge and expertise.

    Ciocc Extro - FCN 1
  • OuijaOuija Posts: 1,386
    Yeah. Road bikes have 68mm BB shells and road bike BB's are designed to sit 68mm apart. So no spacers required. Mountain bike BB's are meant to sit 72mm apart and come with spacers to make them do so if fitted to a 68mm spaced frame.
  • nicklousenicklouse Posts: 81,520 Lives Here
    Ouija wrote:
    Yeah. Road bikes have 68mm BB shells and road bike BB's are designed to sit 68mm apart. So no spacers required. Mountain bike BB's are meant to sit 72mm apart and come with spacers to make them do so if fitted to a 68mm spaced frame.
    you have a wrong number in there. ;)
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown
  • itboffinitboffin Posts: 19,761
    Bash it bash it hard, then replace with a new bike ...because you're worth it 8)
    Rule #5 // Harden The censored Up.
    Rule #9 // If you are out riding in bad weather, it means you are a badass. Period.
    Rule #12 // The correct number of bikes to own is n+1.
    Rule #42 // A bike race shall never be preceded with a swim and/or followed by a run.
  • mrc1mrc1 Posts: 852
    itboffin wrote:
    Bash it bash it hard, then replace with a new bike ...because you're worth it 8)

    Can I pass this off as resulting in me needing new Powertap carbon wheels and Di2?
    http://www.ledomestiquetours.co.uk

    Le Domestique Tours - Bespoke cycling experiences with unrivalled supported riding, knowledge and expertise.

    Ciocc Extro - FCN 1
  • itboffinitboffin Posts: 19,761
    Oh yes at the very least you should have those.
    Rule #5 // Harden The censored Up.
    Rule #9 // If you are out riding in bad weather, it means you are a badass. Period.
    Rule #12 // The correct number of bikes to own is n+1.
    Rule #42 // A bike race shall never be preceded with a swim and/or followed by a run.
  • onemoresoloonemoresolo Posts: 372
    SRAM cocked up the instructions for the GXP BB so you're right with no spacers as above.

    I feel your old one should be committed to a museum or something as the sole decent example of a GXP BB - mine developed play and creaking that could not be remedied after just 1500km!
  • mrc1mrc1 Posts: 852
    SRAM cocked up the instructions for the GXP BB so you're right with no spacers as above.

    I feel your old one should be committed to a museum or something as the sole decent example of a GXP BB - mine developed play and creaking that could not be remedied after just 1500km!

    Make me a (six figure) offer and it's yours.
    http://www.ledomestiquetours.co.uk

    Le Domestique Tours - Bespoke cycling experiences with unrivalled supported riding, knowledge and expertise.

    Ciocc Extro - FCN 1
  • onemoresoloonemoresolo Posts: 372
    0.00001p?
  • rolf_frolf_f Posts: 16,014
    SRAM cocked up the instructions for the GXP BB so you're right with no spacers as above.

    Yeah - the instructions should have read:

    Remove BB from packaging. Throw BB in bin. Buy decent BB and fit that instead. :D
    Faster than a tent.......
  • itboffinitboffin Posts: 19,761
    Odd I have two GXP BB in use atm and neither seems to be unwell both are on commuting all weather duties as well.
    Rule #5 // Harden The censored Up.
    Rule #9 // If you are out riding in bad weather, it means you are a badass. Period.
    Rule #12 // The correct number of bikes to own is n+1.
    Rule #42 // A bike race shall never be preceded with a swim and/or followed by a run.
  • mpdouglasmpdouglas Posts: 219
    I just fitted a SRAM GXP Team BB and it came with two sets of instructions - one required the spacers and the other didn't. As explained above, one set of instructions is for MTBs and the other is for road bike frames. This wasn't clear from the instruction leaftlets.
    "The Flying Scot"
    Commute - Boardman CXR 9.4 Di2
    Sunday Best - Canyon Ultimate SLX Disc w/ DuraAce Di2
  • rolf_frolf_f Posts: 16,014
    itboffin wrote:
    Odd I have two GXP BB in use atm and neither seems to be unwell both are on commuting all weather duties as well.

    My MTB GXP lasted about 500 not very hard miles. And then the bike also had Avid brakes and they were as censored as the BB. I tend to avoid SRAM now though I appreciate other experiences differ!
    Faster than a tent.......
  • itboffinitboffin Posts: 19,761
    Rolf F wrote:
    itboffin wrote:
    Odd I have two GXP BB in use atm and neither seems to be unwell both are on commuting all weather duties as well.

    My MTB GXP lasted about 500 not very hard miles. And then the bike also had Avid brakes and they were as censored as the BB. I tend to avoid SRAM now though I appreciate other experiences differ!

    See i thought the same, I had early SRAM low end groupset on my MTB and it was so shite I took it off and threw the whole lot in the bin, replaced it all with Shimano XT/LX and haven't done anything to it in 6 ish years but them I but rival groupset and some apex last year and you know what its been solid after the initial setup.

    I was also just thinking this week how much stiffer rival cranks feel over 105 5600 or ultegra 6600
    Rule #5 // Harden The censored Up.
    Rule #9 // If you are out riding in bad weather, it means you are a badass. Period.
    Rule #12 // The correct number of bikes to own is n+1.
    Rule #42 // A bike race shall never be preceded with a swim and/or followed by a run.
  • mrc1mrc1 Posts: 852
    I must have been lucky as my sram stuff (Force groupset) has been superb. As I said above its done thousands of miles mostly in the Pyrenees and Alps in everything from 40c sun to regular heavy rain and even snow so hardly an easy life. Hoping this new bb plays ball!
    http://www.ledomestiquetours.co.uk

    Le Domestique Tours - Bespoke cycling experiences with unrivalled supported riding, knowledge and expertise.

    Ciocc Extro - FCN 1
  • mrc1mrc1 Posts: 852
    0.00001p?

    Sold!
    http://www.ledomestiquetours.co.uk

    Le Domestique Tours - Bespoke cycling experiences with unrivalled supported riding, knowledge and expertise.

    Ciocc Extro - FCN 1
  • il_principeil_principe Posts: 9,146
    mrc1 wrote:
    itboffin wrote:
    Bash it bash it hard, then replace with a new bike ...because you're worth it 8)

    Can I pass this off as resulting in me needing new Powertap carbon wheels and Di2?

    EPS.
    2015 Canyon Aeroad CF SLX
    2020 Canyon Ultimate CF SLX
    2020 Canyon Inflite SL 7
    On the Strand
    Crown Stables
  • mrc1mrc1 Posts: 852
    mrc1 wrote:
    itboffin wrote:
    Bash it bash it hard, then replace with a new bike ...because you're worth it 8)

    Can I pass this off as resulting in me needing new Powertap carbon wheels and Di2?

    EPS.

    I'd love EPS but can't get it trade :cry:
    http://www.ledomestiquetours.co.uk

    Le Domestique Tours - Bespoke cycling experiences with unrivalled supported riding, knowledge and expertise.

    Ciocc Extro - FCN 1
  • onemoresoloonemoresolo Posts: 372
    mrc1 wrote:
    0.00001p?

    Sold!

    :D

    Don't get me wrong, I love my SRAM stuff. Currently have a mix of Force and Rival and I'm very happy with all of it, really like the shifter ergonomics and the Doubletap system. The BB had to go though, I got a Trailbright one off eBay with the GXP adapter and it's performed flawlessly once I figured out which spacers were required as they didn't bother including instructions! Advantage of this is the bearings are replaceable and even the ceramic ones don't break the bank.
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