Download PDF format - MagneticLynx

NOTE: The Coefficient of Drag also known as CD many times can be gotten from the manufacturer, Automotive
magazines or the Internet.
NOTE: The Frontal Area many times can be gotten from the manufacturer, if not it can be estimated on this screen from
the vehicle width and height. On calculations below around 135 MPH this will not have a large effect.
NOTE: For most street tires use a Tire Growth percentage of 0 (zero).
NOTE: If Hood Scoop Box is checked (Ram Air) this will calculate a positive pressure in the intake track.
3) Acceleration and Top Speed Prediction Chart with 60 foot, 330 foot, 1/8 Mile, and
1/4 Mile ET using RPM and Torque from Acceleration = in Parameter File also
Coefficient
of
Drag,
Frontal
Area,
Tire
Rolling
Resistance
(use
0.015
Concrete/0.017 Asphalt), Tire Diameter, Tire Rolling Radius, Launch RPM, % Rear End
Power Loss, % Power Loss, Vehicle Weight with Driver, Dyno Correction Factor, Shift
RPM’s, Tire Growth Percentages, Trans Gear Ratios, Shift Time.
NOTE: Data is logged from a full throttle acceleration run in a single Trans. Gear. Log each MPH or RPM with a time
stamp. You will get the best result will be using a 1:1 trans gear. These numbers are added to a parameter file with Road
HP = MPH Time and ROad HP = RPM Time. See example parameter file CARFOR.PRM or the listing at the end of this
manual
NOTE: The Horse Power and Torque numbers generated will be similar to those from a chassis dyno for this vehicle.
Smooth HP Graph: Can content an “N” for NO or NONE or a1 to a5 (moving average) or w1 to w4 (weighted moving
average) or s1 to s4 (squared weighted moving average).
4) Horse Power (Rear Wheel) Prediction Chart using MPH and Times from Parameter File
also Coefficient of Drag, Frontal Area, Tire Rolling Resistance, Tire Growth, Tire
Diameter, Vehicle Weight with Driver, Trans Gear.
5) Horse Power (Rear Wheel) Prediction Chart using RPM and Times from Parameter File
also Coefficient of Drag, Frontal Area, Tire Rolling Resistance, Tire Growth, Tire
Diameter, Vehicle Weight with Driver, Trans Gear.
6) Estimate Frontal Area (Sq. Ft.) from Width and Height (inches).
7) Graph Engine RPM (X-axis) / Torque (BLUE) / Corrected Torque (YELLOW) / Horse Power
(GREEN) / Corrected Horse Power (RED) Y-axis using Torque and RPM inputs for
Acceleration / Top Speed Graph. Corrected numbers will only show if Dyno Correction
Factor is anything other than one.
8) Graph Wheel Torque, RPM on X-axis and Wheel Torque on Y-axis using same inputs as
Acceleration / Top Speed.
9) Graph Wheel Torque, MPH on X-axis and Wheel Torque on Y-axis using same inputs as
Acceleration / Top Speed and Graph X high value / Graph Y high value.
10)
Graph G Forces, Time on X-axis and G force on Y-axis using same inputs as
Acceleration / Top Speed.
11)
Graph G Forces, RPM on X-axis and G force on Y-axis using same inputs as
Acceleration / Top Speed.
12)
Graph MPH on X axis, Aero Drag HP, Tire Rolling Resistance HP, Total HP Drag
(DARK BLUE) and Corrected HP at Drive Wheel(s) on Y axis using same inputs as
Acceleration / Top Speed and Graph X high value / Graph Y high value.
13)
Graph MPH on X-axis, ET on Y-axis using same inputs as Acceleration / Top
Speed and Graph X high value / Graph Y high value.
14)
Graph MPH on X-axis, RPM on Y-axis using same inputs as Acceleration / Top
Speed and Graph X high value / Graph Y high value.
15)
This will Shift the Torque Curve Up or Down 'XXXX' RPM.
16)
Graph ET on X-axis, Nitrous HP on Y-axis using same inputs as Acceleration /
Top Speed and Graph X high value / Graph Y high value.
17)
Acceleration and Top Speed Prediction Chart with 60 foot, 330 foot, 1/8 Mile,
and 1/4 Mile ET using RPM and Torque from Acceleration = in Parameter File also
Coefficient
of
Drag,
Frontal
Area,
Tire
Rolling
Resistance
(use
0.015
Concrete/0.017 Asphalt), Tire Diameter, Tire Rolling Radius, CVT RPM, CVT Power
Loss, Vehicle Weight with Driver, Dyno Correction Factor, Tire Growth Percentages,
CVT.
18)
Nitrous Screen. This will bring up the Nitrous Entry Screen.
19)
Modify Torque Curve Up or Down using DCF (Dyno Correct Factor)
20)
Estimate HP for Top Speed Prediction / MPH using MPH, Coefficient of Drag,
Frontal Area, Tire Rolling Resistance, Tire Diameter, % Rear End Power Loss, %
Power Loss, Dyno Correction Factor, Track - BP or Air Density. -- For Bonneville
try using these as a baseline -- TRR = 0.09, DCF = 1.2134, Track BP = 25.65
NOTE: This is NOT for 1/4 Mile or Drag Racing.
126 - CARFOR Performance Software by Stan Weiss / World Wide Enterprises