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Thread: Headset help

  1. #1
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    Headset help

    I purchased a Mongoose Amasa Comp second hand many months ago and I have been told by a bike mechanic that the headset is the wrong size. When the front brake is pulled the steerer or the bearings slightly knock against the head tube.

    I have been searching for a correct headset on the net but there are so many types and sizes im completely confused.

    I searched the Mongoose web site and it says that the original head set was a Ritchey Logic Zero but I can't find what type of headset this is or what size it is.

    Can anyone give me a link to the headset I need or an equivalent? Please.

    This isn'y my bike but ity is the same if it helps.

    http://www.moredirt.co.uk/ratebike.php?id=5234

  2. #2
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    I kinda doubt that you've got the wrong headset, there aren't that many combinations that'd fit together just a little bit wrong. OTOH there's a small wedge-shaped ring that goes in between the top race and the steerer tube and can easily get lost in a disassembly. If that happens you get what you describe.

    Judging by the pic it looks like you might have one of the integrated/semi-integrated headsets. If you get yourself a vernier caliper and take a look at this link: http://www.sutherlandsbicycle.com/Chapter12.pdf, you should be able to figure out what it is that you've got.

    There's a bunch of "Ritchey Logic Zero"s, with a few different dimensions to choose from. Might be that your best option is to hand the bike back to the mechanic and have him order a replacement for you.
    Last edited by dabac; 09-08-10 at 08:09 AM.

  3. #3
    Senior Member
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    Measure your head tube and steerer and then go to:
    http://www.canecreek.com/headset-fit-finder

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