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  1. #1
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    Tranny question for IBIS guy's - important

    I am wondering what is the Tranny geometry with the "Slot Machine" fully open,
    I am using it for SS and I have to use it almost all the way open, it means that the chain stays are longer, BB is lower and the head angel is slacker. actually I do like it for trail riding.
    I am wondering if it weaken the frame , and what about the stiffness.
    How does B. Lopez bike design for the 4X race, Is it with short or long CS (steeper HA and ......).
    What about the fork, can the frame handle 140 mm' fork (pleas give the axle to crown measurement)
    Thanks
    Last edited by esku; 08-11-2009 at 10:35 PM.

  2. #2
    meh
    Reputation: clewttu's Avatar
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    if you take some links out, CS will be shorter, not sure if that was your concern

  3. #3
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    Quote Originally Posted by clewttu
    if you take some links out, CS will be shorter, not sure if that was your concern
    No, it's not the point.
    Thanks

  4. #4
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    Reputation: miles wadsworth's Avatar
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    Would it really change anything that much? A few MM?
    milesW

  5. #5
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    Quote Originally Posted by miles wadsworth
    Would it really change anything that much? A few MM?
    Yes it is.

  6. #6
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    Too complicate

  7. #7
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    .5"

    Hello,

    To give you a precise answer we need to check the files, and our engineer is on a trip right now, so that's going to be a while...

    The rough answer is: The CS length will be .5" longer and the BB height about .25" lower. Head angle and seat angle change are minimal, less than .5 degree slacker.

    Hans

  8. #8
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    Thanks Hans
    I will wait.
    Its important for me to know that I am not hurting the strength of the bike,
    I don't like to check Ibis crash policy

  9. #9
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    The strength is not an issue. The frame is very strong that way, when they test it everyone is afraid because the forces get up to several thousand pounds and the machine is in danger of breaking!
    H

  10. #10
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    Quote Originally Posted by hanssc
    ...., when they test it everyone is afraid because the forces get up to several thousand pounds ........................
    H
    I am not that heavy

  11. #11
    nerfherder
    Reputation: scruffylooking's Avatar
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    Quote Originally Posted by esku
    I am wondering what is the Tranny geometry with the "Slot Machine" fully open,
    I am using it for SS and I have to use it almost all the way open, it means that the chain stays are longer, BB is lower and the head angel is steeper. actually I do like it for trail riding.
    I am wondering if it weaken the frame , and what about the stiffness.
    How does B. Lopez bike design for the 4X race, Is it with short or long CS (steeper HA and ......).
    What about the fork, can the frame handle 140 mm' fork (pleas give the axle to crown measurement)
    Thanks
    Just in case you missed it the HA gets slacker when you extend the chain stays. Lower, longer, slacker. Sounds fun.

  12. #12
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    Quote Originally Posted by scruffylooking
    Just in case you missed it the HA gets slacker when you extend the chain stays. Lower, longer, slacker. Sounds fun.
    You are right man, my mistake

    But as you mention "lower, longer, slacker. Sounds fun" and that's my point.

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