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  1. #1
    mtbr member
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    Trek 69'er with a 650B?

    I searched and didnt see this. So I figured I'd ask.

    I'm thinking about getting a first run Trek 69'er for a SS Race bike for the year.

    I like getting new toys as well. I was thinking about swapping out the rear 26 for a newer 650B. My only concern would be if it would fit. Has anyone tried it or looked into it?

    I'm thinking it may be a nice addition to the bike, may take a little more to get the bike going but should also carry momentum better as well, which I would think it vital to SS'ing.

    Meh maybe its a case of UGI as well, but it would be fun to try!

  2. #2
    www.derbyrims.com
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    Consider there's no XC race worthy tires yet for B wheels. The Pacenti tires look great for loose, sandy, loamy, and rock, but rather slow rolling for smooth hardpack compared to tires normally used for XC or dual slalom. And your steering angle may get quite twitchy if it's already steep and XC racer like as a 69 bike.

  3. #3
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    Since the trek 69'er is already 69'd I'm not worried about the bike being twitchy. The Pacenti tire looks pretty decent and as a rear tire I think it would be actually fine for the type of stuff we race on down here. Lots of loose sand, rocks and stuff like that.

    The steering geometry shouldnt be too affected by changing out the rear tire to a 650b, but I'm interested to see what other people think.

  4. #4
    nothing relevant to say
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    wont fit. NO WHERE NEAR ENOUGH ROOM.

  5. #5
    mtbr member
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    Quote Originally Posted by Cracked Headtube
    wont fit. NO WHERE NEAR ENOUGH ROOM.
    Thats what I'm afraid of, I dont want to dump a bunch of cash into a wheel I wont use.

  6. #6
    JWA
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    Doesn't appear to be enough room on my Top Fuel 69er, and I think the rear triangle clearances are similar on the hardtails.

  7. #7
    Master of the Obvious
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    I wouldn't even dream of doing that to my 69er. Why mess with perfection....
    Check out my Blog!
    Yes ! I am posting on my Blog again! come visit!

  8. #8
    nothing relevant to say
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    I haven't found a Trek FS a 650B fits, yet.

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