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  1. #1
    Senior Member
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    Jan 2011
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    interesting space between crown race and cartridge bearings/lower head tube race

    hey fellas, two issues id like to ask. first off, i think posting pictures would be unnecessary because i feel like this can be simple to explain.

    so there is about an approx 1 millimeter space between my crown race and the cartidge bearing/lower head tube race. small debris can get in and thats probably a bad thing.
    i took it apart and saw that there is a small scrape on the crown race below the cartridge bearings as if there was a tiny pebble rolling around in there every time i turned.
    is my crown race not on right or damaged? i feel as though the lip on the crown race could have bent a little, creating the small space. would it be a good idea to take the crown race off and then just put it back on?

    and second issue is there is also a small space facing forward about 0.5-1.0mm between the compression ring and dust cap on the top of my headset. is this normal or is something not sitting right?

    maybe the two issues are related?

    sorry i feel like the whole population of bike forums comes here to ask you guys dumb questions.

    perhaps my issues are very minor, but they are really eating away at the back of my head. thanks in advance.

  2. #2
    Senior Member demoncyclist's Avatar
    Join Date
    Oct 2002
    Location
    Medway, MA
    My Bikes
    2011 Lynskey Sportive, 1988 Cannondale SM400
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    Your first assumption is wrong- post pictures so we can see what is going on.
    DEMON

    Satanic Mechanic
    STAR 3 Spinning Instructor

    2011 Lynskey Sportive (Shimano Ultegra 10s)
    1988 Cannondale SM400 (Suntour XC-M 7s)

  3. #3
    Senior Member
    Join Date
    Aug 2005
    Location
    Pittsburgh, PA
    My Bikes
    '''96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '12 Surly Pacer, All are 3x8,9 or 10. It is hilly around here!
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    For a cartridge bearing headset, the "crown race" isn't really a race, it's just a platform the lower cartridge sits and aligns on. The races are part of the cartridge. However, it must be smooth and installed flat and flush on the fork crown to support the bearing properly and if yours is distorted or damaged, it should be repaired or replaced.

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