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  1. #1
    Senior Member gusmanchu's Avatar
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    Newbie to Mt Bike Terms - Need some Help

    I'd normally search to find this out but I'm not even sure what to search for. Been riding road for a few years and am used to the road terminology. Just bought a Giant Talon 29er 1 yesterday and I'm looking at wheels for it.

    What are the sizes all about. Example: looking into Crank Bros Cobalt 2's. Have choice of 9mm or 15mm by 135mm. What does that refer to?
    '98 Cannondale CAD2 R300
    '01 Cannondale CAAD4 R500
    '08 Cannondale Six 13
    '12 Giant Talon 29er 1

  2. #2
    Curmudgeon in Training 20grit's Avatar
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    It's axle size.
    9mm is a standard quick release. Other ones are larger diameter axles, some through axles.

  3. #3
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    I can't say for sure without looking at a link to what you're looking at, but I'm fairly certain that's talking about axle size(the 9 or 15mm) and the width of rear triangle it will fit(the 135mm). For example, in the front a MTB could have a 9mm quick release axle, a 9mm through axle(I think), a 15mm through axle, or a 20mm through axle. In the rear there are a few choices as well. Then it could be 135mm wide in the rear or a couple other sizes if single speed, etc.
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    Quote Originally Posted by scyclops View Post
    Oh yeah, sure, what if everyone thought that way? Then internet forums would merely be places where rational people exchange useful information and ideas - instead of the chaotic, emotionally-charged circuses that they are.

  4. #4
    Pint-Sized Gnar Shredder Zephyr11's Avatar
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    http://www.giant-bicycles.com/en-us/....1/9041/48915/ This guy?

    Sooo...I don't want to tell you what to do, but I'd upgrade that fork before I changed the wheels. You might take a bunch of rotating weight off with the wheels, but a solid fork will do absolute wonders for your ride. Way more important, IMO. Cobalts aren't cheap...for that same money, you could probably put a Float 29 on there. Your bike has a 15QR, right? I think Fox makes a Float with a 15QR, so you wouldn't need a front wheel yet. Looks like you'd need a 1-1/8 steerer, but it's hard to tell from the picture.

  5. #5
    Senior Member gusmanchu's Avatar
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    Quote Originally Posted by Zephyr11 View Post
    http://www.giant-bicycles.com/en-us/....1/9041/48915/ This guy?

    Sooo...I don't want to tell you what to do, but I'd upgrade that fork before I changed the wheels. You might take a bunch of rotating weight off with the wheels, but a solid fork will do absolute wonders for your ride. Way more important, IMO. Cobalts aren't cheap...for that same money, you could probably put a Float 29 on there. Your bike has a 15QR, right? I think Fox makes a Float with a 15QR, so you wouldn't need a front wheel yet. Looks like you'd need a 1-1/8 steerer, but it's hard to tell from the picture.
    Yes, that's the bike. I have a Pro account with Crank Bro's so the wheels are a much better price than retail. What do you mean solid fork?? What is on there right now and what would be the difference? Also where would I get the specs to tell what axle sizes I would have on my bike. Could not find it on the giant website for the model I have.


    Thanks guys!
    '98 Cannondale CAD2 R300
    '01 Cannondale CAAD4 R500
    '08 Cannondale Six 13
    '12 Giant Talon 29er 1

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