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Bicycle and motorcycle geometry — Wikipedia Republished.

Rake angle determines the ability of a motorcycle to steer, it directly affects the steering ability of a motorbike, how fast or slow the motorcycle can take turns will be depending upon the rake angle it bears. A rake angle is the angle which can be calculated by drawing an imaginary perpendicular line from the front axle and a line drawn from the steering head of the bike.

Motorcycle Geometry- Why Do Bikes Handle The Way They Do.

The rake angle effects steering ability, the smaller the rake angle then the easier the bike is to corner but will be less stable in a straight line. Consequently, the rearward inclination, or rake is normally in the 22 to 36 degrees range. So, why inclining the fork rearward make it stable? The simple explanation is that when round objects, like wheels, have a force applied to their axis.Rake (also called caster) is the angle of a motorcycle’s steering head of the frame (A). Choppers have a lot of rake—their forks stick way out in front. Super bikes have much less astheir forks are closer to vertical. A typical sportbike might have a rake as steep as 25 degrees, while a chopper may be closer to 45 degrees. A touring bike is typically at around 29 degrees and a cruiser at.Rake is the angle of the forks off vertical and trail is the amount that the front wheel is being pulled down the road, yes, the front wheel is being PULLED not pushed. A good example of trail is the wheels on a shopping cart. The wheel axle is behind the pivot point. This causes the wheel to follow the pivot point no matter where it is going. If the wheel axle were directly under the pivot.


A motorcycle leaning hard into a turn looks sort of like magic. Of course, the whole process is actually governed by some basic physics. In short, the motorcycle leans in a turn because of torque.Rake, which is sometimes referred to as steering head inclination, steering head angle or steering axis inclination, is defined as the rearward inclination of the steering head as measured from the vertical. Rake is always described in degrees. Although there are exceptions, the accepted practice is to consider a vertical steering head; one placed at 90-degrees to the pavement, as having a.

What is rake angle motorcycle

Rake angle has a crucial role in a motorcycle’s handling characteristics. Generally speaking (means there are exceptions), the greater the rake angle, the more stable the motorcycle is at higher speeds. It is normally accepted that the responsiveness of a motorcycle’s handling is inversely corresponding to the rake angle values. More precisely, the smaller the rake angle, the more agile.

What is rake angle motorcycle

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.

What is rake angle motorcycle

STEERING 101: How it works. The basic elements of steering include rake, trail, and offset. The trail plays a role in stabilizing the front-end by helping your tire develop a restoring force that attempts to keep your motorcycle traveling in a straight line. The longer the trail, the more the motorcycle will resist turns and be more stable on straight line driving. A shorter trail allows for.

What is rake angle motorcycle

A motorcycle is literally built from the ground up, using a complex set of equations, called steering geometry, that determine how the motorcycle interacts with the road. Most motorcyclists have heard of rake, trail and wheelbase, which denote the angle of the motorcycle's front fork, how far the front tire's contact patch is from the rake and the motorcycle's overall axle-to-axle length. All.

What is rake angle motorcycle

The rake is the angle of your steering neck compared to a line perpendicular to the frame. Most choppers have a rake between 34 and 45 degrees. The trail is the distance between a line drawn through the steering neck and a line drawn vertically through the front hub at the axle. I have read various articles on the Internet that indicate trail should be between 2-4 inches and other sites that.

Motorcycle Rake and Trail Calculator - Thompson Choppers.

What is rake angle motorcycle

Trail is a function of steering axis angle, fork offset, and wheel size. Motorcyclists tend to speak of trail in relation to rake angle. The larger the rake angle the larger the trail. A rake is an angle of slope( and for motorcycle is measured from the vertical.

What is rake angle motorcycle

The more or less stock bike with a rake angle of 30 degrees can turn around at low speed within a circle having a five foot radius but on the extreme opposite end of the spectrum the bike having the 45 degree rake angle needs another six feet of room to make a 180 degree turn. While this doesn't sound like much of a difference in tight traffic or parking lot situations it can mean the.

What is rake angle motorcycle

The angle of the rake is kept pretty close to the original and the modifications made are an attempt to make the bike look very sporty and sleek. A Sportster motorcycle resembles a bobber more than a chopper because it is not raked.

What is rake angle motorcycle

Rake is simply the angle of the steering head holding the forks. It is measured in degrees. The rake angle determines straight-travel stability. A larger rake angle means the motorcycle will tend to stay moving in a straight line while traveling. A shorter rake angle will allow the direction of travel to be changed with less effort from input on the handlebars.

What is rake angle motorcycle

The rake of a ship's prow is the angle at which the prow rises from the water (the rake below water being called the bow rake). A motorcycle or bicycle fork rake is the angle at which the forks are angled down towards the ground. In machining the rake angle is the angle from the cutting head to the object being worked on. In geology the rake is the angle at which one rock moves against another.

Rake - definition of rake by The Free Dictionary.

What is rake angle motorcycle

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 centerline of the axle. Diameter of the front tire. Diameter of the rear tire. Trail: Distance defined by vertical line from axle to ground and intersect of centerline of steering neck and ground. Raked Triple Trees-- In order to bring trail figures back into.

What is rake angle motorcycle

Find link is a tool written by Edward Betts. searching for Rake angle 20 found (34 total) alternate case: rake angle. Bicycle and motorcycle geometry (2,379 words) exact match in snippet view article find links to article speak of trail in relation to rake angle. The larger the rake angle the larger the trail.

What is rake angle motorcycle

For example, if eccentric bearing cups are used in the steering head to alter the angle between the steering head and the steering stem of the triple clamps, than the rake is the inclination with respect to the vertical of the steering stem. The definition of the rake via the axis of rotation is always true and even applies to non-conventional designs. Typical numbers range from about 20 to a.

What is rake angle motorcycle

The combination of head angle, fork rake, and trail has a significant impact on the handling of the bike. It is unhelpful, however, to consider the angle of the headtube in isolation.