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Old 06-27-25 | 12:51 AM
  #8  
Duragrouch
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The head-tube/steering-axis angle and rake are very closely related, I don't think can be considered separately. The steering axis extended to the ground, then measured to the center of the tire contact patch (directly below the axle center) would have an excessively large trail/caster, so then the fork rake (curve or angle) extends the axle forward to reduce that number.

My criterium road race bike, notably had relatively "steep" head tube angle (74 deg IIRC), so less trail than a more "slack" (smaller) angle, thus, the fork blades has less rake than most. Also note, that when talking angles and rake, the angles are often reversed/complimentary if description is talking about motorcycle forks. But as an example, my old crit race bike:

Also, for a given fork geometry, deeper (higher) section tires, increases trail/caster.



Last edited by Duragrouch; 06-27-25 at 12:55 AM.
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