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  1. #1
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    Freeradical max tire size?

    Just did a quick search to no avail, but does anyone know off hand the max tire size for a X Freeradical? I have seen on here (I believe it was Devo) has used holy rollers in 2.4? Would hookworms fit at 2.5? Or should I stick with the BA at 2.35? Thanks in advance!

  2. #2
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    Reputation: Keener's Avatar
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    Depends on how one defines fit.
    My Lady's Xtracycle has Hookworms on WTB DH laser disk rims (tubeless) at 45 psi.
    There is no room for a broken spoke or a deformed rim. It might have 2 mm on each side.

    She has run in the past
    Big Apples (fast, not much grip in the rough, good wear life)
    Tattoo (fast, better grip, good/better wear life)
    Fat Frank (fast, good grip, bad wear life)

    All tubeless

    I will also second also Devo's holy roller statement.
    That is a slow tire, I had some on my big dummy and would beat you up with road vibration.
    One pedal goes down
    the other goes up
    bike goes forward
    smile

    Bryan Keener
    HPV research since 1984

  3. #3
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    Keener- Thanks for the thoughts. For right now I am rolling on Maxxis Crossmarks, not the slowest, but also not the fastest. For fit, I guess as long as it is not a PITA to put the tire in and out of the freerad, then that would work for me.

  4. #4
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    If you go to extremes and use a hammer on the back end of the frame, you will be able to fit 26"x3.0" Duro Razorbacks mounted on 65mm wide Surly Large Marge Rims:

    Flickr: Jickmady Kulkarnisteakbacon's Photostream

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  5. #5
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    Quote Originally Posted by Leopold Porkstacker View Post
    If you go to extremes and use a hammer on the back end of the frame, you will be able to fit 26"x3.0" Duro Razorbacks mounted on 65mm wide Surly Large Marge Rims:

    Flickr: Jickmady Kulkarnisteakbacon's Photostream

    I like what you did to your dummy. So much I did my own.

    2011-01-01_17-02-39_346.jpg

    How ever backcountryeti was on about his Xtracycle and it is a wee bit different bit of kit.
    Were the dummy is a FFF winner between the two bikes side by side.
    The Xtracycle however might fit a taller tire then the dummy or so it would seem to me.
    One pedal goes down
    the other goes up
    bike goes forward
    smile

    Bryan Keener
    HPV research since 1984

  6. #6
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    Quote Originally Posted by Keener View Post
    I like what you did to your dummy. So much I did my own.

    2011-01-01_17-02-39_346.jpg

    How ever backcountryeti was on about his Xtracycle and it is a wee bit different bit of kit.
    Were the dummy is a FFF winner between the two bikes side by side.
    The Xtracycle however might fit a taller tire then the dummy or so it would seem to me.
    Woops! There goes your warranty too!

    They ought have designed the Big Dummy to accommodate for 3.8" wide meats such as the Surly Endomorph, Surly Larry, Surly Nate, etc.
    QUOTE from MTBR.COM: You have given Brewtality too much Reputation in the last 24 hours, try again later.

  7. #7
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    Quote Originally Posted by Leopold Porkstacker View Post
    Woops! There goes your warranty too!

    They ought have designed the Big Dummy to accommodate for 3.8" wide meats such as the Surly Endomorph, Surly Larry, Surly Nate, etc.
    Ouch that pic makes me a little sick poor BD I know that had to hurt a little.

  8. #8
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    There's the tire fit, and then whether the chain will get past the tire without rubbing. I don't have a problem on my Dummy with a Nuvinci hub, but I have read a few posts from people who had a hard time getting their shifting to work without the chain/tire rub.

  9. #9
    That Unicycle Guy
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    That 3" tire is in a Dummy not a freeradical.

    I use a hookworm in the back and it is a snug fit but works very well.

    Before the hookworm I tried a 2.6" DH tire (can't remember what brand) and I had to cut all the edge knobs off to make it fit.

    EDIT: good point about chain rub. I have a old derailer on the bike derailer hanger acting as a chain guide to reduce the crazy amount of chain flop and to keep it away from the tire on the bottom but do get some rubbing when in 1-1, and occasionally in 1-2. Thought about loosing a cog and spacing the gear cluster out but never got around to it.

  10. #10
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    Thanks for the info, I like the idea about the old derailleur as a chain guide. That is one of those simple concepts that is so simple you just don't think about it! Thanks!



    Quote Originally Posted by ericpulvermacher View Post
    That 3" tire is in a Dummy not a freeradical.

    I use a hookworm in the back and it is a snug fit but works very well.

    Before the hookworm I tried a 2.6" DH tire (can't remember what brand) and I had to cut all the edge knobs off to make it fit.

    EDIT: good point about chain rub. I have a old derailer on the bike derailer hanger acting as a chain guide to reduce the crazy amount of chain flop and to keep it away from the tire on the bottom but do get some rubbing when in 1-1, and occasionally in 1-2. Thought about loosing a cog and spacing the gear cluster out but never got around to it.

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