WARNING: Still in development. The fundamental categories of suspension geometry … Bike geometry Take and enter the … Bicycle and motorcycle geometry is the collection of key measurements (lengths and angles) that define a particular bike configuration. Rake, trail and offset. If you use a very fat rear tire, you should keep the trail as close to 4 inches as possible. Changing one thing at a time is the first rule you learn in motorcycle setup, but: Q: How many parameters change when you “only” change the shock length? We know you were day dreaming about sex when the triangles were floating around the blackboard and you were doodling motorcycles while the teacher was explaining geometry and tangents. Normal trail is defined as the … SuspAct is used in both On- and Offroad racing. The following sections of this article go into the dynamics of what happens when changes are made to the suspension. Our Suspension Calculator makes setting up your suspension super easy. EXTREMELY DANGEROUS! Harley-Davidson motorcyles can be raked and turned into the most radical choppers. SuspAct geometry software enables you to: Calculate and compare the geometry setup of 5 motorcycles; Analyze parameters that effect steering and handling of the motorcycle; Analyze static suspension forces; SupAct motorcycle geometry … RAKED TRIPLE TREES: In order to bring trail figures back into line, triple trees with raked steering stems can be used. Carefully dismount without further compressing the suspension. By. Changing of components from the suspension geometry … Do not rely on measures for exact accuracy. Calculate your suspension settings. Bike Set-Up. We will ship a suspension … While using the software you learn about which items are important for the handling characteristics of your bike. It’s important to make sure everything is dialled in perfectly, otherwise your car will drive in a … WITH just two wheels and two sets of suspension, a motorcycle’s geometry is far less complex than that of a car. Because we are dealing with the “feel” of the motorcycle, normal trail must also be considered. Mount the bike with a friend holding you up, or lean against a wall. © 2013 - Thompson Choppers - All rights reserved, Motorcycle Frames, Chopper Frames, Rolling Chassis & Parts. MotoSPEC is software for tuning motorcycle suspension and chassis geometry MotoSPEC has been designed for racing use, with a simple interface and clear outputs, to assist motorcycle tuners and … If the trail is more than 6 inches the bike will handle sluggishly at high speeds. This programme calculates the mass centre, moments of inertia and weight distribution of a motorcycle … Apply your calculated suspension … Leaning the bike … TRAIL: The distance defined by the vertical line from axle to ground and the intersection of centerline of the steering neck and ground. Get started. Usually adjustable in 3, 5, 7 degrees of rake. But the lack of wheels means any adjustment you do make can have a big effect on the way the bike handles. Now measure the distance between the two marks and you have your trail measurement. Enter the corner weight (which you can calculate using the Weight Distribution Calculator), the unsprung weight (which is total weight of components not support by the spring) and your existing or intended coil rate using a mixture of US or metric measurements.Press on the orange bar to expand it then enter the suspension … There are trade offs that can be given for each adjustment that you make to your bike. HOW TO MEASURE CORRECT TRAIL Grip; Tyres; Suspension; Geometry; Geometry Suspension geometry is a mixture of theoretical lines designed into a suspension system to make it work in a particular designed way. Suspension is more than springs. Download a 4-LInk Calculator. SuspAct software forces you to work in an accurate way and work in one direction with your setups. Put a mark on the floor at that point. *While we always try our best to list proper pricing online, prices are subject to change. Normal trail is somewhere between 3 and 6 inches. Motorcycle Suspension, Working & Maintenance – Explained. The first step in either building a 4-link suspension or troubleshooting an existing suspension is to download one of these Triaged calculators created by Dan Barcroft and plug … You will have trouble balancing the bike at lower speeds or on winding roads. After you … It will seem almost too steady. This means that the software is easy to use with a practical approach. This programme calculates steering geometry parameters. The anti squat of a motorcycle is caused by the swing arm suspension system. DIAMETER: The diameter of the front tire. This height difference and the driving force will create a torque that tries to push the rear suspension … A motorcycle's suspension serves a dual purpose: contributing to the vehicle's handling and braking, and providing safety and comfort by keeping the vehicle's passengers comfortably isolated from road noise, bumps and vibrations.. SuperMoto suspension has 3 specific considerations: Maximum traction. There’s an art to setting suspension up, and without it your car will drive horribly. Without the proper rate springs, a bike’s front and/or rear ride height will be off (affecting critical aspects of chassis geometry like rake and trail) and the ride quality will suffer. With too little or negative trail (steering axle mark behind the front axle mark), the bike will handle with unbelievable ease at low speeds, but will be completely out of balance at high speed. Our suspension calculator makes suspension set up easier than it's ever been. TYPES OF RIDING The types of riding determine you expected setup. Move the rubber o-rings on the fork and shock so they’re against the seals. All you have to do is add your height, weight, and Specialized bike … the swing arm linkage mechanism. These trade off must be balanced against the gains that a specific adjustment makes to improve your suspension. We’re going to show you how to do the calculations. ... We will collect all of your information and explain the benefits, details and pricing of your suspension service, as well as determine which FC facility will be serving you. BikeAdvice Informative Series: We discuss motorcycle suspension, its working and maintenance in this story… With a suspension geometry that consists of fork angle and height, motorcycles are designed. Basics. Motorcycle geometry covers two areas of the bike, front end geometry and rear end geometry. RAKE: The angle in degrees of the steering neck from vertical. Calculate frame geometry of an existing bike through simple XY measurements. Bicycle Calculator - Graphically compare the frame size and geometry of different bicycles / calculate gear ratios, cadence and speed. Input your fully equipped weight, select your model of Trek mountain bike, and we'll calculate your suggested suspension settings. Flowing smoothly through curves without swaying or wobbling. TOO MUCH TRAIL It will easily develop a fatal high-speed wobble. BA User - June 11, 2020. SuspAct geometry software enables you to: SupAct motorcycle geometry software is developed in a racing environment. There are many forces that a rear motorcycle suspension and its accompanying swing arm have to withstand in order to allow it to be effective throughout its lifespan. As a street rider typically expects … motorcycle chassis and suspension specialists _____ < Leverage and Linkages > Once upon a time in the distant past (about 1973), motorcycle rear suspensions were quite similar to the front: there was a pair … Your front suspension geometry is defined by the following six variables which are: OFFSET: Centerline of the top steering neck to the centerline of the top of the fork tubes. It will feel generally sluggish and clumsy. 5. Welcome to cycle-ergo.com, a tool for simulating a person's riding posture on any motorcycle or scooter. Your fork's max travel will be in the specifications for your bike. This page includes an Excel version of the motorcycle rake and trail calculator. Then place the tape parallel to the steering neck, following the angle of the steering neck all the way up to the floor. Trackside. Pitch control – this means controlling excessive front to back movement (which really is a geometry consideration). Note: If your bike is equipped with a rear suspension, have someone sit on the seat when you make the measurements to simulate your actual riding condition. Begin by clicking the red tab above ("Add a Motorcycle") to choose a motorcycle or scooter. Raise the bike to an upright position, using a tape measure, hold the tape straight down from the front axle to the floor. typical changes that riders make in order to change their bike’s handling characteristics is to alter the ride height at either end of the bike Your front suspension geometry is defined by the following six variables which are: OFFSET: Centerline of the top steering neck to the centerline of the top of the fork tubes. Primary among these are wheelbase, steering axis angle, fork offset, and trail.These parameters have a major influence on how a bike … RAKE: The angle in degrees of the … Edit and view bike geometry and parameters in tables and graphs, Ten Kate Racing Yamaha is using SuspAct for 2020, Aprilia RSV4 Factory ’13- ’14 bike models available, Calculate and compare the geometry setup of 5 motorcycles, Analyze parameters that effect steering and handling of the motorcycle. Bottoming … Put a mark here also. Use this calculator … Regardless of the method used to calculate anti-squat, we can determine what geometry changes can be made to increase or decrease anti-squat. Sponsorship. There are three ways to increase anti-squat: Raise rear ride height or the entire motorcycle … It might explain why shopping carts weren’t meant to go 200 mph. The suspension is designed to work in a specific geometry, and dropping the bike will alter that, affecting your handling as well as lean angle and suspension travel. Race Car Suspension Geometry - Race Car Suspension Geometry Software Free - Google Docs December 1, 2020 at 6:41 am 8. racing aspirations » Suspension Geometry Calculator […] The bike will handle easily at both high and low speeds. The rotational point of the swing arm is above the point where the motorcycle drives itself (the ground!). Calculate a full chart from the often sparse geometry chart provided by the manufacturer. The typical motorcycle has a pair of fork tubes for the front suspension, and a swingarm with one or two shock absorbers for the rear suspension. Steering Geometry calculator. TOO LITTLE OR NEGATIVE TRAIL 6. NORMAL TRAIL Suspension movement Enter how much suspension travel you want to visualise the effects of in mm. FORK LENGTH: The distance between the top of the fork tubes to the centerline of the axle. The physics and geometry of rear motorcycle … CoG and weight distribution calculator. Compare and/or match fit of two … Now all these years later when you finally got the money to build your dream bike, all you can do is thumb through pictures of other people’s projects, searching for that “look” blissfully unaware of what all that trigonometry was for. It should read between 2 and 4 inches. Firms like these can supply you with complete motorcycles or frames that have specialized triple clamps and front ends. Short versus long Let’s say you choose two completely different models on which to do the test – a 2006 R6 and a 2006 XV1900.With its short wheelbase of only 1380mm a bike like the new YZF-R6 supersport would need a smaller turn angle than the new XV1900 Midnight Star cruiser, which has a long wheelbase of 1715mm.And you would also notice how the shorter wheelbase bike … I state that the adjustment process is a game because of the trade offs that must be made. Please verify purchase prices prior to payment.
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