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  1. #1
    no trees are safe
    Reputation: Millfox's Avatar
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    What to look at when replacing a rim.

    Hey guys.

    I managed to ding my rear rim on a fallen in part of a road. Thankfully I wasn't injured, but my rear wheel took the entire blow. Now the rim is damaged beyond repair and I need a replacement one. I don't want to replace spokes though... so I'll need one with close enough measurements.

    What to look for in rim specifications so I will pick something close enough for the spokes to work correctly with the new rim?

    The current one is a WTB Dual Duty XC rim from 2005. Sticker specifications are 599x17/541 ERD.

    What the heck does that mean?

  2. #2
    mtbr member
    Reputation: Yardstick's Avatar
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    599 is your rim's outside diameter. 17 is the width of the rim. 541 ERD is Effective Rim Diameter - this is the part of the rim measurement that will define your spoke length. All measurements are in millimeters. I wouldn't risk it with used spokes. Wouldn't it suck to lace up a new rim and start breaking spokes in the first few rides?

  3. #3
    no trees are safe
    Reputation: Millfox's Avatar
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    That's a good point. I've never broken a spoke before though... I'll think about it. And I made a typo. The outer diameter is 559.

    Thanks for the advice.

  4. #4
    mtbr member
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    I guess I was a little wrong too. Apparently 559 is the rim's bead diameter and 17 is the inside width. I was thinking it was outside width.

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