It is the difference between the fork rake or offset and the steering axis.
Standard road bike fork rake.
Road racing bicycle forks have an offset of 40 50 mm 1 6 2 0 in.
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Let s talk about trail to understand the rest.
This is what really influences how a bike will react to rider input.
Offset length width steerer tube length and steerer tube diameter.
Fork rake comparison for 57cm bikes.
Head tube angles range from 71 5 degrees to 74 5 degrees.
Fork rake and offset.
Well fork rake is only one ingredient in the steering equation.
The fork offset is the perpendicular distance from the steering axis to the center of the front wheel.
The product of the head tube angle and the fork rake is the trail.
It s the distance that the fork blades angle forwards relative to a perpendicular line drawn through the fork s steerer.
In bicycles fork offset is also called fork rake.
Touring forks 45 52mm road forks 40 45mm cx forks 45mm.
Generally speaking with a proper fork rake to yield a trail from 55 to 60 mm of trail the head angles in this range are fairly stable at high speeds.
A 2007 nevada classic 750 with a rake of 27 5 fork offset.
The amount that the fork is offset from this imaginary line is known as fork rake in road bikes or fork offset in mountain.
Things move fast in the world of bicycle engineering and the fork offset conversation has grown tremendously over the past few years.
Where people get confused is with the inverse relationship between rake and trail.
It is unhelpful however to consider the angle of the headtube in isolation.
Generally less rake will shorten the wheelbase and result in more nervous handling a characteristic often sought by race riders battling.
Forks have several key dimensions which include.
Fork rake offset and trail.
Cane creek offers their forks in the two standard offsets 44mm and 51mm.
The combination of head angle fork rake and trail has a significant impact on the handling of the bike.
So most shallow angle bikes have plenty of fork offset to compensate.
Bicycle forks usually have an offset or rake not to be confused with a different use of the word rake in the motorcycle world that places the fork ends forward of the steering axis this is achieved by curving the blades forward angling straight blades forward or.
Fork offset or rake is a key aspect of how to alter a bikes handling.
Trail is a key determining factor for how a bike handles.
Fork rake or fork offset is a key factor in the handling of a bike.
