Short Travel Fork on a Frame Designed for Long (Average?) Travel?- Mtbr.com
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  1. #1
    Mantis, Paramount, Campy
    Reputation: Shayne's Avatar
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    Short Travel Fork on a Frame Designed for Long (Average?) Travel?

    I know the opposite has been discussed ad nauseum and I'm quite familiar with the results of that.

    I know in theory what will happen and how the handling on the bike will change.

    I'm looking for actual reviews from people that have used a 60-70mm travel fork on a frame designed around a 100mm travel fork.

    Thanks.
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  2. #2
    pronounced may-duh
    Reputation: Maida7's Avatar
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    I ride a full suspension with an adjustable travel fork. I can adjust the fork from 120-100. 100mm lowers the front of the bike and puts more weight over the front wheel and I use it for climbing. It keeps the front wheel from wondering on steep climbs. It also quickens the steering and shortens the wheelbase by tucking the front wheel more under the bike.

  3. #3
    A Real Winner.
    Reputation: sonyisdope's Avatar
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    Here is the lowdown:

    Every inch of travel changes your headtube angle by 1 degree. If you are putting a 2" travel fork on a frame designed for a 4" travel fork, you will have a VERY steep headtube angle, so be ready for it! You won't break the frame or anything though by putting on a shorter travel fork on it, just make sure that the fork crown clears the downtube of your bike. Shorter travel forks can sit higher than longer travel forks and it would suck to bash your preload knobs into your downtube.
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  4. #4
    Mantis, Paramount, Campy
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    Right...

    Frame is spec-ed at 70.5 with a 100mm fork so it'll be roughly 72-72.5.
    No problem there. I have other bikes with 72 deg head angles.

    I hadn't thought of downtube clearance issues. I'll be sure to check that.
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  5. #5
    Bike to the Bone...
    Reputation: rzozaya1969's Avatar
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    Quote Originally Posted by Shayne
    Frame is spec-ed at 70.5 with a 100mm fork so it'll be roughly 72-72.5.
    No problem there. I have other bikes with 72 deg head angles.

    I hadn't thought of downtube clearance issues. I'll be sure to check that.
    Another thing, but I'm not too mechanically zaavy... your BB might get lower, also the seattube angle will be steeper.....

  6. #6
    Nouveau Retrogrouch SuperModerator
    Reputation: shiggy's Avatar
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    Quote Originally Posted by sonyisdope
    Here is the lowdown:

    Every inch of travel changes your headtube angle by 1 degree...
    Closer to a 1 degree change for every 17mm of change in the ground to crown race distance (which can be different than the difference in the fork travel).

    I have a fork that locks down on one of my bikes, lowering the front end by ~50mm. Rarely use it as the bike feels like c##p when climbing in the saddle and at best awkward in most other conditions.
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  7. #7
    Portland, OR
    Reputation: todd_freeride's Avatar
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    I put my friends nemisis project tuned Z.1 on my bike, it has 65mm of travel, my bike is designed around 100-130mm of travel. it was just way too steep, and felt like it was oversteering a lot. really hated the way that it feels. I run a short ish fork on there. being 90mm but thats as low as I'm willing to take that.
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