Dirt Bike Steering Geometry - Axis,Rake,Trail and Offset.

RB Racing's Professional Rake and Trail Calculator for motorcycles Definitions: Your front suspension geometry is defined by the following six variables which are defined as: Offset-- Centerline of top of steering neck to centerline of top of fork tubes. Rake-- The angle in degrees of the steering neck from the vertical. Fork Length-- The distance between the top of the fork tubes to the.

What is fork rake offset

Using the 44mm offset fork with a 65.5 degree headtube angle and the 51mm offset with a 64.4 degree headtube creates about a 20 to 21mm increase in the wheelbase. Increasing the wheelbase and slackening the headtube limit a bike’s ability to load the front wheel and track correctly.

HELM 29: Why 44mm Offset? - Cane Creek Cycling Components.

The fork offset is just a minor thing in the whole system which involves kinematics, suspension, anti-squat, overall geometry and personal setup (handlebar width, height, grips, crank length and pedals). What I think is that the fork offset makes 0.5% of the overall handling if we stay within reasonable values. Theoretically, shorter offset has.As the fork tubes move forward in relation to the steering stem, the angle between the front wheel axis and the point where Rake and the pavement intersect narrows, so Trail decreases. As we would expect decreasing the offset, which moves the wheel closer to the steering stem increases Trail. When the steering stem and the fork lay in the same plane, the fork has zero offset. When that is the.Fork Rake is also known as Offset, which more accurately describes what it is: the hub’s offset from the steering axis. Not to be confused with the curvature of the fork blades, which some people think of as “rake”. Straight blade forks can have plenty of offset. Fork offset determines trail when considered with head angle (and the diameter of the wheel). Trail is best thought of as the.


The definition of fork rake is the distance between an imaginary line drawn directly through the steering axis and the wheel center. The fork may be curved to achieve this rake, or it may be angled from the crown. Along with the concept of trail, how the motorcycle will steer and respond is defined. Rake permits the addition of forks that are extended over stock length to be added to a chopper.Fork rake or offset is the distance between the steering axis and the wheel center. It doesn’t matter if the fork blade is curved forward in the traditional way, or if the fork blade is straight but angled forward from the crown. If the offset is the same the bike will handle the same. You will see from the drawing above, if the head angle is made steeper then trail decreases because the.

What is fork rake offset

OFFSET: Centerline of the top steering neck to the centerline of the top of the fork tubes. RAKE: The angle in degrees of the steering neck from vertical. FORK LENGTH: The distance between the top of the fork tubes to the centerline of the axle. DIAMETER: The diameter of the front tire.

What is fork rake offset

The solution is to increase the offset (sometimes called “rake”) of the dropouts on the fork to push the front wheel out further. As the offset is increased, steering feel is quickened. This is why early 29ers had really steep headtube angles. Case in point, the original Intense Spider 29er had a 73-degree headtube angle! With the small fork offsets, the only way to make the steering feel.

What is fork rake offset

For a given steering angle and fork offset, the trail is the same regardless of how the offset is obtained. A straight bladed fork with 45mm of rake has exactly the same trail as a curved-bladed fork of the same length with 45mm rake. All that matters here is the points at the fork crown and the dropouts, not the shape of the fork between them.

Fork Offset Explained and Tested - YouTube.

What is fork rake offset

Bicycle Trail Calculator. What is Trail? Trail is the horizontal distance between your bike's steering axis and the center of the front tire's contact patch. It's a hotly-debated topic among bike geeks these days -- some believe that it's a key factor which determines how a bicycle handles, especially with a front load. Learn more about trail and general frame geometry concepts over at.

What is fork rake offset

The fork also uses various fiber types based on their specific properties to manage different load types as best as possible in the areas in which they occur - such as side load, torsion and impact. The WCS Carbon Road Fork features a 46mm rake, and includes a compression plug. It also fits up to 30c tires, depending on tire make and model.

What is fork rake offset

Less offset will move the fork tubes closer to the gas tank on full lock.so check this in advance. Additional Variables. If you want to enter other things like wheelbase and alternate fork lengths and find out how your rake and trail changes as well as the height of the forks etc. you might want to use our Professional Rake and Trail Calculator. Definitions: Your front suspension geometry.

What is fork rake offset

Bicycle and motorcycle geometry is the collection of key measurements (lengths and angles) that define a particular bike configuration. Primary among these are wheelbase, steering axis angle, fork offset, and trail. These parameters have a major influence on how a bike handles. Contents(show) Wheelbase Wheelbase is the horizontal distance between the centers (or the ground contact points) of.

What is fork rake offset

Fork rake. This is the distance that the axle is offset from the centerline of the fork. Changing this dramatically will also change the handling of the bike, so try to stay close to what you have now unless you want to work out the maths. You can measure it by having a friend hold the old fork vertically and then sighting down the steerer.

Skynet Bikes - Bicycle and motorcycle Geometry.

What is fork rake offset

Forks have several key dimensions which include: offset, length, width, steerer tube length, and steerer tube diameter. Offset. 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.

What is fork rake offset

The Comfort WSD is the ideal bike for those looking to get from A to B in comfort with the angle adjustable and height adjustable stem, 50 mm travel suspension fork and suspension seat post. The upright, laid back position means that you can cruise along effortlessly on the road or on light off-road. The 21-speed Shimano Tourney running gear and Tektro V-brakes mean that it has the reliability.

What is fork rake offset

Fork Rake (or Offset) Fork Trail. Out of the three, Fork Trail arguably tells us the most about how a bicycle will steer. But let’s start with the head tube angle. Head Tube Angle. The headtube angle is the angle at which the head tube is to the ground. A bike with a steeper head angle has faster steering. There is less effort required to.