steel rigid fork flex, normal?- Mtbr.com
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  1. #1
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    steel rigid fork flex, normal?

    currently building up a steel single speed frame with a steel rigid fork. I'm running 160mm disc on the fork, and when I hit the front brake hard I can see the fork flexing. Is this normal for a steel rigid fork?

  2. #2
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    What's your build?

  3. #3
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    Quote Originally Posted by vapezilla View Post
    What's your build?
    Singular Swift

  4. #4
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    How much flex are you talking about?

    I'd expect some flex - but I've not yet had my Swift rigid, actually waiting for the adapter to arrive to fit the brakes.
    If you need me I'll be at the bar

  5. #5
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    It's normal. You won't notice it on the trail.

  6. #6
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    It is normal for a steel fork to flex some. Adds to the comfort factor of the rigid fork. Years ago I had a skinny legged Wily fork with V brakes and that thing was a flex-a-holic, even with the V brakes. Never broke though.

    Go ahead and rock it rigid!
    Thanks to www.weavercycleworks.com for my awesome bike frames!

  7. #7
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    Quote Originally Posted by Manicmtbr View Post
    It is normal for a steel fork to flex some. Adds to the comfort factor of the rigid fork.
    You mean, it decreases the discomfort factor. Slightly.
    Mind your own religion.

  8. #8
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    Quote Originally Posted by gsxrawd View Post
    currently building up a steel single speed frame with a steel rigid fork. I'm running 160mm disc on the fork, and when I hit the front brake hard I can see the fork flexing. Is this normal for a steel rigid fork?
    I'm pretty sure it's normal unless you've got some sort of extra-burly fork.

    I just built a Salsa El Mariachi with Salsa's color-matched fork. My Avid BB5s are enough to make the fork flex visibly. You can easily see the flex if you get on my bike and slam the front brake.

    I've a 26er rigid with a Surly Instigator fork. I can't say that I've noticed flex on that one, but it's a rim-brake bike so the braking forces are possibly different. And the Instigator fork is significantly thicker metal than the Salsa fork.

    I bet both forks flex. I've just been paying more attention to the El Mar due to some Avid turkey-gobble problems I've been trying to get sorted.

  9. #9
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    Everything flexes.

  10. #10
    rebmem rbtm
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    It is certainly normal for a suspension corrected 29er steel fork. Long fork blades. Soulcraft refuses to build suspension corrected 29er steel forks anymore.

  11. #11
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    Quote Originally Posted by PoisonDartFrog View Post
    You mean, it decreases the discomfort factor. Slightly.
    +1 rep, but they say I have to spread some around first!
    Thanks to www.weavercycleworks.com for my awesome bike frames!

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