need help buying bottom bracket plz

raymondo2
raymondo2 Posts: 3
edited September 2007 in MTB buying advice
hi i have a saracen xile,its the older version. Ineed a new bottom bracket, i have truvativ hesselfelt cranks and i dont know what "chainline" means. I want the truvativ howitzer bb but it says 50 mm chainline. Is that the width of the bb shell or what. Any help will be gratefully reccieved thanks

Comments

  • nicklouse
    nicklouse Posts: 50,673
    unless your cranks are Howitzer compatable you will need a ISIS bb.

    so what have you got?
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown
  • Splasher
    Splasher Posts: 1,528
    Chainline is the distance from the centre of your BB shell to the middle of your chain line (middle chainring in a triple set-up). As Nick eludes to above, although Howitzer BBs use the ISIS interface, they are not compatible with ISIS chainsets

    Your chainset should say either Howitzer or ISIS somewhere on it.

    Other than that, you need to know your BB shell width (68 or 73mm most likely) and your spindle length (113 or 118 most likely).
    "Internet Forums - an amazing world where outright falsehoods become cyber-facts with a few witty key taps and a carefully placed emoticon."
  • raymondo2
    raymondo2 Posts: 3
    yeh i ave a isis crank set and i fink it shud all fit together now...fnx alot peeps :D

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