TruVativ crank set.

bellys
bellys Posts: 456
edited June 2012 in MTB workshop & tech
I'm not sure what has happend....so I need help understanding it please.
I removed my TruVativ X9 x10 speed cranks to replace the granny ring, when I reassembled the cranks there was a little play on the none drive side crank arm I torqued the crank arm up as per SRAM web site http://www.bike-discount.de/pdf/products/490.pdf and it was still there so i followed the on line instructions and play is still there. :roll: I did this 6 times before I got fed up...after some lunch I stripped it all down and the bearings in my GXP bottom bracket were fine ( looked and feel), it looks like shaft is moving on the inner bearing race :idea:
The crank set is 8mth old and so is the bottom bracket....my next step is to replace the bottom bracket with a cheap one to eliminate that....before I do can some body shed light on it please as the play was not there before I stripped it.

Also will this fit http://www.halfords.com/webapp/wcs/stor ... 10159#tab1
My frame is OnOne carbon 456.

Thanks and sorry for long post.

Comments

  • nicklouse
    nicklouse Posts: 50,675
    So adding grease did not sort it?
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown
  • bellys
    bellys Posts: 456
    No mate.
  • bennett_346
    bennett_346 Posts: 5,029
    My guess is it's the infamous driveside seal...
  • bellys
    bellys Posts: 456
    bennett_346 wrote:
    My guess is it's the infamous driveside seal...

    Please explane more.. :shock:
  • bennett_346
    bennett_346 Posts: 5,029
    Every truvativ chainset i've had has been a pain because of the driveside GXP seal.

    638498d1315260864-2mm-gap-truvativ-gxp-drive-side-2011.09.06-gxp-gs-ds-shield.jpg

    This thing.

    Every time i put it back as it's supposed to be put, it works its way out and a) stops actually sealing anything and b) allows the crank to wobble because it's an integral part of the fit.

    If you put it the other way round it does a better job of maintaining a good seal, but preloads the bearings and means the crank has a bit of play.

    I've still never got to the bottom of it and SRAM don't know either, even after a phonecall to them.
  • bellys
    bellys Posts: 456
    I was looking at that today a cpl of times it popped out....hhmm that could be the prob..
    Thanks.
  • bennett_346
    bennett_346 Posts: 5,029
    Have a read, may help.

    http://forums.mtbr.com/drivetrain-shift ... 28751.html
  • bellys
    bellys Posts: 456
    bennett_346 wrote:
    Have a read, may help.

    http://forums.mtbr.com/drivetrain-shift ... 28751.html

    Lol thanks just finished reading that then poped back on here.

    Thanks.
  • nicklouse
    nicklouse Posts: 50,675
    God there is some crap in that thread.

    The gap should be there what ever BB width.

    If the BB shell has not been prepared correctly then yes you can have isusses.

    As you have play on the non drive side and replacing th bearings with grease has not got rid of the play get new bearings/cups.
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown
  • bellys
    bellys Posts: 456
    nicklouse wrote:
    God there is some crap in that thread.

    The gap should be there what ever BB width.

    If the BB shell has not been prepared correctly then yes you can have isusses.

    As you have play on the non drive side and replacing th bearings with grease has not got rid of the play get new bearings/cups.
    I am going to replace with a new bottom bracket...I would not fill the gap as I know that's how it's made.
    I was not sure why it had happend as there was no play before I stripped it down.
  • bennett_346
    bennett_346 Posts: 5,029
    nicklouse wrote:
    God there is some crap in that thread.
    Ikr. However i was referring to the seal discussion not the gap.

Categories