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Speed-Wiz Calculations
Vehicle
information
Engine
Calculations
- Air flow and fuel flow (total and per cylinder)
- Camshaft intake / exhaust center angles, lobe center angle, lobe center point, overlap, and lobe areas with profile and acceleration graphs. You can enter cam specs by opening/closing points or by duration and lobe angles, or you can enter detailed lift heights at crank positions. Lift height data can be entered using any desired crank position.
- Combustion chamber volume
- Compression ratio
- Piston dish / dome volume
- Displacement, cylinder volume, area, ring length, bore/stroke ratio
- Efficiency (based on air flow, fuel flow, power or torque), BMEP, BSFC
- EFI timing and tuning
- Fuel injector sizing
- Header tubing length and diameter (2 different calculations - one uses camshaft data)
- Header collector dimensions
- Intake manifold runner area and length
- Maximum RPM
- Mean effective pressure
- Octane requirement
- Piston speed and position (including graph)
- Port velocity
- Power and torque (including boost & nitrous)
- Power curve input
- Power table input
Turbocharger
Calculations
- Compressor Map for selecting a compressor size for best efficiency
- Effective Compression including boost and mechanical compression
- Temperature and Flow pressure and flow rates throughout intake system
- Intercooler Efficiency based on measured temperatures
- Octane Requirement calculation for turbocharged engines
- Turbocharger Sizing provides an actual turbo size estimate
Engine
Simulator
- Conditions input and calculations
- Fuel input and calculations
- General input and calculations
- Intake input and calculations
- Exhaust input and calculations
- Aspiration input and calculations
- Valves input and calculations
- Piston cycle calculations
- Valve lift calculations
- Valve open area calculations
- Power table customizable listing of engine simulator output
- Power plot "live graph" of engine simulator output
Suspension
Calculations
- Works with A-arm, strut, or 4-link suspensions
- Instant center and roll center
- Kingpin angle and offset
- Anti-lift, anti-dive, and anti-squat percentages
- Coil spring rate
- Leaf spring rate
- Wheel rates
- Total, sprung, and unsprung weights and frequencies
- Weight distribution, diagonal weights
- Spring center position in relation to CG
- Anti-roll bar / torsion bar rate (solid or tubular bars)
- Animated A-arm suspension travel / simulation
- Animated strut suspension travel / simulation
- Animated 4-link suspension travel / simulation
- Steering geometry / simulation including Ackerman steering
- Torsion bar rate - solid or tubular bars
Chassis
Calculations
- Aerodynamic drag and rolling resistance based on coast-down times (no wind tunnel needed).
- Center of gravity (3 dimensions)
- Coolant boiling and freezing points
- Diagonal weights & distribution
- Frontal area
- Gear ratio, dynamic
- Gear ratio, static
- Overall gear ratio
- Polar moment of inertia
- Shift points for fastest acceleration, by vehicle speed and engine RPM.
- Speedometer accuracy
- Speeds in gears.
- Tire temperature analysis and adjustment recommendations.
- Tire stagger for flat or banked tracks.
- Camber change due to tire stagger
- Track width change due to camber
- Tire size and revolutions per distance
- Wedge
- Weight distribution analysis
- Wing drag and down-force - quantities and ratio.
Performance
Calculations
- Real-time acceleration simulator with numerous features, proven accuracy, and lightning speed.
- Detailed acceleration inputs including aerodynamics, altitude, road grade, and wind inputs.
- Acceleration table by distance, speed, time, or RPM with adjustable display increment.
- Acceleration plot with elapsed time, actual time, speed, distance, RPM, gear, weight transfer, engine torque, wheel torque, acceleration force, wheel spin and redline indicators.
- Braking time and distance between any two speeds.
- Cornering speed, force, and weight transfer, even on banked turns.
- Cornering capacity and rollover point.
- Dragstrip calculation for quarter-mile ET and speed, eighth-mile ET and speed, and 0-to-60 MPH time.
- Fuel consumption by time and distance.
- Potential and maximum acceleration.
- Power requirements with altitude, road grade, and wind inputs.
- Speeds in gears.
- Top speed.
- Weight transfer.
- Wheel thrust.
Reference
- Bolt tightening torque
- Adjustable fraction/decimal converter with selectable denominator and precision
- Hose inside and outside diameters, weights, minimum bend radius
- Metal gauge thickness - steel and aluminum
- Statistical math calculations from any arbitrary inputs
- Adjustable trig table
- Weights of metal bar and tubing - steel and aluminum
Lap timer
Race strategy
Fun
- Coordination tester with customization for your skill level and practice.
- Drag race practice tree, with pro or full tree and adjustable delay and rollout. Works with keyboard or mouse.
- Formula One start, with adjustable delay time and number of lights.
- Reflex tester with customization for your skill and practice level simulates reacting to events on the road or track ahead of you only when required. Works with keyboard or mouse.
- Blood alcohol level calculation including elapsed time.
- Run multiple, simultaneous windows - all windows remain "live" regardless of input focus. You can run multiple copies of one window - the reflex tester, for example - or mix them on the screen.
Graphing
- Interactive graph formatting options.
- Multiple vehicles in the same graph.
- Save and retrieve graphs as disk files.
- Flexible printing abilities for all graphs.
Graphs
- A-arm suspension geometry
- Acceleration force
- Acceleration rate
- Aerodynamic drag
- Air flow
- Braking
- Camber
- Camshaft profile & acceleration
- Cornering
- Efficiency
- 4-Link suspension geometry
- Fuel flow
- Ignition advance
- Instant center
- Kingpin angle
- Piston position/speed
- Power
- Power loss due to drag
- Roll center
- RPM
- Shift points
- Spark advance
- Speed
- Steering geometry
- Strut suspension geometry
- Sway bar rate
- Top speed
- Tire scrub
- Torque
- Track width
- Volumetric efficiency
- Weight transfer
- Wheel spin
- Wheel thrust
- Wheel torque
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