Percentage Anti Dive on Front Calculator

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Suspension Geometry

Driveline

Front Axle and Steering

Race Car Vehicle Dynamics

Vehicle Collision

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Anti Geometry of Independent Suspension

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Side View

✖Percentage Front Braking is the amount of braking distributed to the front brakes.ⓘ Percentage Front Braking [%B_f]			+10% -10%
✖Side View Swing Arm Height is the height of the Instantaneous center of swing arm as seen from side view.ⓘ Side View Swing Arm Height [SVSA_h]			+10% -10%
✖Side View Swing Arm Length is the horizontal distance between center point of tyre and instantaneous center of swing arm in the side view.ⓘ Side View Swing Arm Length [SVSA_l]			+10% -10%
✖Height of CG above Road is defined as the height of vehicle's centre of gravity above road surface.ⓘ Height of CG above Road [h]			+10% -10%
✖Wheelbase of Vehicle is the center distance between the front and the rear axle of the vehicle.ⓘ Wheelbase of Vehicle [b]			+10% -10%

✖Percentage Anti Dive Front describes the amount the front of the vehicle dives under braking.ⓘ Percentage Anti Dive on Front [%AD_f]

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Formula

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Percentage Anti Dive on Front

Formula

`"%AD"_{"f"} = ("%B"_{"f"})*("SVSA"_{"h"}/"SVSA"_{"l"})/("h"/"b")`

Example

`"2.7"=("60")*("200mm"/"600mm")/("10000mm"/"1350mm")`

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Percentage Anti Dive on Front Solution

STEP 0: Pre-Calculation Summary

Formula Used

Percentage Anti Dive Front = (Percentage Front Braking)*(Side View Swing Arm Height/Side View Swing Arm Length)/(Height of CG above Road/Wheelbase of Vehicle)
%AD_f = (%B_f)*(SVSA_h/SVSA_l)/(h/b)
This formula uses 6 Variables

Variables Used

Percentage Anti Dive Front - Percentage Anti Dive Front describes the amount the front of the vehicle dives under braking.
Percentage Front Braking - Percentage Front Braking is the amount of braking distributed to the front brakes.
Side View Swing Arm Height - (Measured in Meter) - Side View Swing Arm Height is the height of the Instantaneous center of swing arm as seen from side view.
Side View Swing Arm Length - (Measured in Meter) - Side View Swing Arm Length is the horizontal distance between center point of tyre and instantaneous center of swing arm in the side view.
Height of CG above Road - (Measured in Meter) - Height of CG above Road is defined as the height of vehicle's centre of gravity above road surface.
Wheelbase of Vehicle - (Measured in Meter) - Wheelbase of Vehicle is the center distance between the front and the rear axle of the vehicle.

STEP 1: Convert Input(s) to Base Unit

Percentage Front Braking: 60 --> No Conversion Required
Side View Swing Arm Height: 200 Millimeter --> 0.2 Meter (Check conversion here)
Side View Swing Arm Length: 600 Millimeter --> 0.6 Meter (Check conversion here)
Height of CG above Road: 10000 Millimeter --> 10 Meter (Check conversion here)
Wheelbase of Vehicle: 1350 Millimeter --> 1.35 Meter (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

%AD_f = (%B_f)*(SVSA_h/SVSA_l)/(h/b) --> (60)*(0.2/0.6)/(10/1.35)

Evaluating ... ...

%AD_f = 2.7

STEP 3: Convert Result to Output's Unit

2.7 --> No Conversion Required

FINAL ANSWER

2.7 <-- Percentage Anti Dive Front

(Calculation completed in 00.004 seconds)

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National Institute of Technology Calicut (NIT Calicut), Calicut, Kerala

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< 13 Anti Geometry of Independent Suspension Calculators

Wheelbase of Vehicle from Percentage Anti Dive

Go Wheelbase of Vehicle = Percentage Anti Dive Front/((Percentage Front Braking)*(Side View Swing Arm Height/Side View Swing Arm Length)/(Height of CG above Road))

Height of Centre of Gravity from Road Surface from Percentage Anti Dive

Go Height of CG above Road = ((Percentage Front Braking)*(Side View Swing Arm Height/Side View Swing Arm Length)*Wheelbase of Vehicle)/Percentage Anti Dive Front

Percentage Front Braking given Percentage Anti Dive

Go Percentage Front Braking = Percentage Anti Dive Front/((Side View Swing Arm Height/Side View Swing Arm Length)/(Height of CG above Road/Wheelbase of Vehicle))

Percentage Anti Dive on Front

Go Percentage Anti Dive Front = (Percentage Front Braking)*(Side View Swing Arm Height/Side View Swing Arm Length)/(Height of CG above Road/Wheelbase of Vehicle)

Wheelbase of Vehicle from Percentage Anti Lift

Go Wheelbase of Vehicle = Percentage Anti Lift/((Percentage Front Braking)*(Side View Swing Arm Height/Side View Swing Arm Length)/(Height of CG above Road))

Percentage Anti Lift

Go Percentage Anti Lift = (Percentage Front Braking)*(Side View Swing Arm Height/Side View Swing Arm Length)/(Height of CG above Road/Wheelbase of Vehicle)

Height of Centre of Gravity from Road Surface from Percentage Anti Lift

Go Height of CG above Road = ((Percentage Rear Braking)*(Side View Swing Arm Height/Side View Swing Arm Length)*Wheelbase of Vehicle)/Percentage Anti Lift

Percentage Rear Braking given Percentage Anti Lift

Go Percentage Rear Braking = Percentage Anti Lift/((Side View Swing Arm Height/Side View Swing Arm Length)/(Height of CG above Road/Wheelbase of Vehicle))

Percent Anti Squat

Go %Anti Squat = (tan(Angle between IC and Ground)/(Height of CG above Road/Wheelbase of Vehicle))*100

Angle between IC and Ground

Go Angle between IC and Ground = atan(Side View Swing Arm Height/Side View Swing Arm Length)

Front View Swing Arm

Go Front View Swing Arm = (Track Width of Vehicle/2)/(1-Roll Camber)

Camber Change Rate

Go Camber Change Rate = atan(1/Front View Swing Arm)

Roll Camber

Go Roll Camber = Camber Angle/Roll Angle

Percentage Anti Dive on Front Formula

Percentage Anti Dive Front = (Percentage Front Braking)*(Side View Swing Arm Height/Side View Swing Arm Length)/(Height of CG above Road/Wheelbase of Vehicle)
%AD_f = (%B_f)*(SVSA_h/SVSA_l)/(h/b)

How is anti dive geometry useful?

When a car is under braking conditions, the braking force acts directly through the centre of gravity and causes the car to rotate. Anti-dive geometry prevents the car from diving on the brakes and stops the front wheels from deflecting vertically or going into bump due to braking conditions. Similarly to anti-squat geometry, the percentage of anti-dive that the car has is based upon side view swing arm length and height, wheelbase and centre of gravity height. If the car has 100% anti-dive then no compression of the front suspension due to braking forces will occur at all. If the percentage is lower than 100% then some compression will occur due to braking forces and will increase as the percentage gets smaller.

How to Calculate Percentage Anti Dive on Front?

Percentage Anti Dive on Front calculator uses Percentage Anti Dive Front = (Percentage Front Braking)*(Side View Swing Arm Height/Side View Swing Arm Length)/(Height of CG above Road/Wheelbase of Vehicle) to calculate the Percentage Anti Dive Front, The Percentage anti dive on front formula is defined as the ratio between the height of where the tire force vector crosses the center of gravity plane expressed as a percentage. Percentage Anti Dive Front is denoted by %AD_f symbol.

How to calculate Percentage Anti Dive on Front using this online calculator? To use this online calculator for Percentage Anti Dive on Front, enter Percentage Front Braking (%B_f), Side View Swing Arm Height (SVSA_h), Side View Swing Arm Length (SVSA_l), Height of CG above Road (h) & Wheelbase of Vehicle (b) and hit the calculate button. Here is how the Percentage Anti Dive on Front calculation can be explained with given input values -> 2.7 = (60)*(0.2/0.6)/(10/1.35).

FAQ

What is Percentage Anti Dive on Front?

The Percentage anti dive on front formula is defined as the ratio between the height of where the tire force vector crosses the center of gravity plane expressed as a percentage and is represented as %AD_f = (%B_f)*(SVSA_h/SVSA_l)/(h/b) or Percentage Anti Dive Front = (Percentage Front Braking)*(Side View Swing Arm Height/Side View Swing Arm Length)/(Height of CG above Road/Wheelbase of Vehicle). Percentage Front Braking is the amount of braking distributed to the front brakes, Side View Swing Arm Height is the height of the Instantaneous center of swing arm as seen from side view, Side View Swing Arm Length is the horizontal distance between center point of tyre and instantaneous center of swing arm in the side view, Height of CG above Road is defined as the height of vehicle's centre of gravity above road surface & Wheelbase of Vehicle is the center distance between the front and the rear axle of the vehicle.

How to calculate Percentage Anti Dive on Front?

The Percentage anti dive on front formula is defined as the ratio between the height of where the tire force vector crosses the center of gravity plane expressed as a percentage is calculated using Percentage Anti Dive Front = (Percentage Front Braking)*(Side View Swing Arm Height/Side View Swing Arm Length)/(Height of CG above Road/Wheelbase of Vehicle). To calculate Percentage Anti Dive on Front, you need Percentage Front Braking (%B_f), Side View Swing Arm Height (SVSA_h), Side View Swing Arm Length (SVSA_l), Height of CG above Road (h) & Wheelbase of Vehicle (b). With our tool, you need to enter the respective value for Percentage Front Braking, Side View Swing Arm Height, Side View Swing Arm Length, Height of CG above Road & Wheelbase of Vehicle 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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