What is a good motion ratio?
What is a good motion ratio?
Half the speed of the 1:1 ratio. This is better in the way that your shocks wont fade from getting too hot (due to low shock velocities) and you get more travel outof your shock.
How is motion ratio calculated?
Raise the wheel to ~4” above ride height (measured vertically), record the exact compression. Measure and record the distance between the shock mounts. The amount the shock moved between droop and bump divided by the amount you moved the wheel is your motion ratio.
What is spring motion ratio?
The spring motion ratio (MRSp) is defined as the ratio of the spring displacement (dB) to the wheel displacement (dA), as shown in Equation 4 below. Since the arm rotates around a common pivot, the length between the pivot and the points of interest also determine the motion ratio.
How is spring to motion ratio calculated?
The equation is WR = SR(MR)2, WR is wheel rate in LBf/in, SR is the spring constant (also known as k) in LBf/in, and MR is motion ratio where MR is stated as shock position/wheel position. For reference, the front wheel rate of a F355 Challenge car is 1,078 LBf/in with a 2200 LBf/in spring!
What is motion ratio Fsae?
Motion ratio is D1 / D2. Motion ratio is also the ratio between spring travel to wheel travel. The thing about motion ratio is you can use it to tweak your suspension effect. The front and rear of the FSAE car have different weights. The rear of the car ususally weighs more due to the engine weight.
What is the difference between spring rate and wheel rate?
Wheel Rate is basically the Spring Rate but measured at the wheel instead of the where the spring attaches to the linkage. It is basically the Spring Rate multiplied by the motion ratio squared. The motion ratio is the ratio between how much the spring is compressed compared to how much the wheel is actually moved.
How do you choose spring coilovers?
Rules of Thumb
- Preload. Preload at the coilover should be between ½” and 6” to prevent the springs from coming loose and to ensure proper droop, wheel rate and bottoming control.
- Coilover Dual Rate Nuts. In a dual rate coilover setup, the softer spring should not be less than 70\% of the stiffer rate.
- Longer Lower Springs.
What is the shock absorber ratio?
Motion ratio in suspension of a vehicle describes the amount of shock travel for a given amount of wheel travel. Mathematically it is the ratio of shock travel and wheel travel. Suspension stiffness: Suspensions tends to stiffen when the inclination of the shock absorber to horizontal tends to 90 deg.
What is difference between stiffness and strength?
Strength and stiffness are two physical properties of a material. One major difference between them is that stiffness is the ability of an object to withstand stress without breaking. On the other hand, strength is the ability of an object to resist deformation when stress is applied.