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Fork Rake Clearance Question

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Fork Rake Clearance Question

Old 12-28-04, 09:15 PM
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JohnSKI
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Fork Rake Clearance Question

Through doing some searching through this forum, I've found a few great links explaining how fork rake is the angle from the headtube to the front hub, and that each frame only has one 'neutral steer' rake angle.

assuming what I have just said is correct, would one run into clearance problems with oversteer rake angles? for example, the frame i'm building up says it's for 43 degree fork rake offset. If i get a 40degree fork, could the wheel be too close to the front of my pedal stroke when I turn?
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Old 12-29-04, 09:26 PM
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none of the mechanics have chimed in, so, here I go.....


I'm tippin' it will bring your front wheel about 3mm closer to your toes
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Old 12-30-04, 07:11 AM
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First off, you mean 43 MM offset vs. 40 MM offset. Fork rake (offset) is the distence from the steering axis of the fork to the center of the wheel, measure at a right angle to the steering axis. The head angle is measured in degrees, not the offset.

With a large frame, steep head angle and corresponding short fork offset, there may be some toe overlap. This can also happen with a very small frame. If your frame size is in the middle, you should not have any overlap. You would only notice overlap on sharp turns at low speeds.
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Old 12-30-04, 07:33 AM
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Originally Posted by 531Aussie
none of the mechanics have chimed in, so, here I go.....


I'm tippin' it will bring your front wheel about 3mm closer to your toes
Won't even ammount to that much as the offset is measured at the dropouts and decreases as you go up the fork leg.
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Old 12-30-04, 07:41 AM
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Originally Posted by sydney
Won't even ammount to that much as the offset is measured at the dropouts and decreases as you go up the fork leg.
what does that have to do with anything**********
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Old 12-30-04, 08:37 AM
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Originally Posted by galen_52657
what does that have to do with anything**********
Try reading it all again with the comprehension switch in the ON position.
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Old 12-30-04, 10:21 AM
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Originally Posted by sydney
Try reading it all again with the comprehension switch in the ON position.
Too much holiday cheer for you…..

Where the curve in the fork is has nothing to do with one's foot contacting the front wheel or the amount of fork offset.

There are forks with strait blades that have the same offset as forks with curved blades.

With a 3 mm decrease in fork rake, the front wheel will be slightly less than 3 mm closer to the bottom bracket.

So lay off the eggnog.
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