What size are Sportster fork tubes?
39mm
How long are stock Sportster fork tubes?
Fork Tube Kit Stock Length 35mm for Ironhead Sportster (XL 75-83) & Super Glide (FX 76-83)
What size forks on Sportster 48?
A 39mm Mid Glide fork is found on Harley-Davidson Sportster Forty-Eight models from 2010-2015, for instance. The Harley-Davidson Sportster 48 has a Mid Glide front end. Note that with custom parts, or machining of stock parts, you can build a front end that combines non-standard fork tube diameters and widths.
How do Harley forks work?
Harley forks generally consist of upper tubes that mount to the triple trees and lower tubes that slide over them and connect to each other via the front wheel. Generally very long, the main spring holds the front end up and compresses as the front wheel comes into contact with a bump.
What size are Wide Glide forks?
The spacing dimension for Wide Glide forks is 9.875″ between fork tube centers. By comparison, a ‘Mid-Glide’ is 8.875″ between fork tube centers, and a ‘Narrow-Glide’ is 7.00″ between fork tube centers. The original Wide Glide front forks measured 1-5/8″ in diameter.
How do you measure fork tubes?
Fork length is measured from the base of the frame neck to the center point of the axle mounting hole. For any off-the-shelf motorcycle this standard measurement for the front forks is considered stock length.
What does 41mm fork mean?
41 mm is ~1 5/8″ dia of tube, 160 mm is ~6 1/4″ travel. The larger the dia, the stiffer the forks. The greater travel, the more suspension moves up and down.
How are inverted forks measured?
For traditional forks, measure from the top of the dust cover to the bottom of the triple tree and for upside down/inverted forks measure from the dust cover to the top of the axel mount. Get off the bike and measure how much the suspension sags from its own weight (free sag), this is known as L3.
How is motorcycle rake and trail calculated?
Put a mark on the floor at that point. Then place the tape parallel to the steering neck, following the angle of the steering neck all the way up to the floor. Put a mark here also. Now measure the distance between the two marks and you have your trail measurement.
How much rake is too much on a motorcycle?
Under normal operation, this contact point is always some distance behind the projected line—somewhere between 2 and 4 inches (5–10 cm). Think of it as how far the contact patch trails behind the steering axis. Too much trail makes a motorcycle difficult to turn; too little makes it unstable.
How does trail affect handling?
Trail is a combination of the head tube angle and the fork rake and can be thought of as the tyre contact point trailing behind the steering axis. The short explanation is a small amount of trail equals a ‘fast’ handling bike, while greater trail equals a ‘slow’ handling bike.
What does fork rake mean?
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”. Fork offset determines trail when considered with head angle (and the diameter of the wheel).
How does rake affect handling?
The smaller the rake angle, the less effort is required to turn the steering. Though, the motorcycle will be less stable in a straight line. Conversely, a larger rake angle requires more effort to turn but tends to make the motorcycle more stable at high speeds and helps maintain a straight course.
What is frame rake?
The rake is the angle formed between the neck on the frame of a bike and a vertical line. The bigger the angle, the further out the front wheel will be from the frame.
What is rake angle in cutting tool?
Rake angle is a parameter used in various cutting and machining processes, describing the angle of the cutting face relative to the work. There are three types of rake angles: positive, zero or neutral, and negative.