Motion Ratio or Installation Ratio in Suspension Solution

STEP 0: Pre-Calculation Summary
Formula Used
Motion Ratio in Suspension = Spring/Shock Travel/Wheel Travel
M.R. = ST/WT
This formula uses 3 Variables
Variables Used
Motion Ratio in Suspension - Motion Ratio in Suspension is ratio of shock travel to the corresponding wheel travel.
Spring/Shock Travel - (Measured in Meter) - Spring/Shock Travel is the amount by which spring or shock absorber compresses when wheel travel takes place.
Wheel Travel - (Measured in Meter) - Wheel Travel is the amount by which wheel moves vertically over the bump/droop.
STEP 1: Convert Input(s) to Base Unit
Spring/Shock Travel: 65 Millimeter --> 0.065 Meter (Check conversion here)
Wheel Travel: 100 Millimeter --> 0.1 Meter (Check conversion here)
STEP 2: Evaluate Formula
Substituting Input Values in Formula
M.R. = ST/WT --> 0.065/0.1
Evaluating ... ...
M.R. = 0.65
STEP 3: Convert Result to Output's Unit
0.65 --> No Conversion Required
FINAL ANSWER
0.65 <-- Motion Ratio in Suspension
(Calculation completed in 00.004 seconds)

Credits

Created by Vivek Gaikwad
AISSMS College of Engineering, Pune (AISSMSCOE, Pune), Pune
Vivek Gaikwad has created this Calculator and 25+ more calculators!
Verified by Anshika Arya
National Institute Of Technology (NIT), Hamirpur
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6 Steering System Calculators

Understeer Gradient
Go Understeer Gradient = (Load on Front Axle at High Speed Cornering/(Acceleration due to Gravity*Cornering Stiffness of Front Wheels))-(Load on Rear Axle at High Speed Cornering/(Acceleration due to Gravity*Cornering Stiffness of Rear Wheels))
Understeer Increment due to Steering System Compliance
Go Under Steer Increment due to Steering Compliance = (Weight under Front Axle*(Turning Radius of Car*Caster Angle+Pneumatic Trail of Tire))/Effective Stiffness of Steering System
Pinion Pitch Circle Radius
Go Pinion Pitch Circle Radius = (Number of Pinion Teeth*Linear or Circular Pitch)/(2*pi)
Steering Ratio
Go Steering Ratio = Steering Wheel Radius/Pinion Pitch Circle Radius
Motion Ratio or Installation Ratio in Suspension
Go Motion Ratio in Suspension = Spring/Shock Travel/Wheel Travel
Torque Acting on Steering Arm
Go Torque = Frictional Force*Scrub Radius

Motion Ratio or Installation Ratio in Suspension Formula

Motion Ratio in Suspension = Spring/Shock Travel/Wheel Travel
M.R. = ST/WT

All about Motion/ Installation ratio.

An installation ratio is the ratio between how much the spring and damper moves in relation to how far the wheel and tyre move. In general, the wheel and tyre will move a further distance than the spring and damper. The installation ratio is vital to understand in your suspension set up particularly if you are planning on choosing you own spring rates as it helps to determine the effective spring rate at the wheel known as “wheel rate”. It therefore determines the amount of deflection that the spring and damper and anti-roll bar will experience at any displacement of the wheel and tyre.

The installation ratio for the spring/damper and the installation ratio for the anti-roll bar will both need measuring or calculating for the front and rear wheels. The values will then allow the correct spring rates to be installed on the car or will help to understand the actual spring rate experienced at the wheel (known as wheel rate) on your current set up.

How to Calculate Motion Ratio or Installation Ratio in Suspension?

Motion Ratio or Installation Ratio in Suspension calculator uses Motion Ratio in Suspension = Spring/Shock Travel/Wheel Travel to calculate the Motion Ratio in Suspension, Motion ratio or Installation ratio in suspension is the ratio of shock travel to the corresponding wheel travel. Motion Ratio in Suspension is denoted by M.R. symbol.

How to calculate Motion Ratio or Installation Ratio in Suspension using this online calculator? To use this online calculator for Motion Ratio or Installation Ratio in Suspension, enter Spring/Shock Travel (ST) & Wheel Travel (WT) and hit the calculate button. Here is how the Motion Ratio or Installation Ratio in Suspension calculation can be explained with given input values -> 0.6 = 0.065/0.1.

FAQ

What is Motion Ratio or Installation Ratio in Suspension?
Motion ratio or Installation ratio in suspension is the ratio of shock travel to the corresponding wheel travel and is represented as M.R. = ST/WT or Motion Ratio in Suspension = Spring/Shock Travel/Wheel Travel. Spring/Shock Travel is the amount by which spring or shock absorber compresses when wheel travel takes place & Wheel Travel is the amount by which wheel moves vertically over the bump/droop.
How to calculate Motion Ratio or Installation Ratio in Suspension?
Motion ratio or Installation ratio in suspension is the ratio of shock travel to the corresponding wheel travel is calculated using Motion Ratio in Suspension = Spring/Shock Travel/Wheel Travel. To calculate Motion Ratio or Installation Ratio in Suspension, you need Spring/Shock Travel (ST) & Wheel Travel (WT). With our tool, you need to enter the respective value for Spring/Shock Travel & Wheel Travel and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.
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