Pulling the sheet…
Workshop manual · Vol. 1 · 24 sheets
Car
Tools
Calculators for the garage, the dyno cell and the pit wall. Drag a slider, watch the drawing move, read the number. Every sheet shows its working.
- Sheets
- 24
- Systems
- 5
- Units
- SI + US
- Sign-up
- None
Engine
6 sheets
Horsepower & Torque
Sketch a dyno curve and read power from torque at any engine speed.
Engine Displacement
Bore, stroke and cylinder count to swept volume in cc, litres and cubic inches.
Compression Ratio
Static compression from chamber, gasket, deck and piston volumes.
Piston Speed
Mean and peak piston speed, rod ratio and g-load at top dead centre.
Injector Sizing
Pick injector flow and fuel pump size for a target power level.
Turbo Boost
Pressure ratio, charge temperature and estimated power under boost.
Drivetrain
4 sheets
Speed, RPM & Gearing
Road speed in every gear, shift drops and cruising revs.
Ring & Pinion
Final-drive ratio from tooth counts, and what bigger tires do to it.
Quarter Mile
Estimate ET and trap speed from weight and power, then run the strip.
Crank vs Wheel Power
Convert between flywheel and wheel horsepower with drivetrain loss.
Wheels & Tires
4 sheets
Tire Size
Decode a tire code into diameter, sidewall, circumference and revs.
Tire Compare
Compare two sizes: speedometer error, ride height and gearing change.
Wheel Offset
See how new width and ET move the wheel toward strut or fender.
Tire Pressure & Temp
How pressure rises as tires heat up, and what to set them to cold.
Chassis & Dynamics
5 sheets
Stopping Distance
Reaction plus braking distance for any speed, surface and gradient.
Aero Drag & Top Speed
Drag force, power demand and the speed where power runs out.
Cornering G-Force
Lateral g for a corner radius and speed, against your grip limit.
Corner Weights
Front/rear, left/right and cross-weight from four scale readings.
Spring Rate & Ride Frequency
Wheel rate, natural frequency and the suspension frequency response.
Fuel, Electrics & Units
5 sheets
Fuel Economy & Trip Cost
Convert L/100 km and mpg, then price a journey.
EV Charging Time
Charge time, cost and range added, with a realistic taper curve.
Wire Gauge
Size 12 V wiring for current, run length and voltage drop.
Subwoofer Box
Sealed enclosure Qtc, F3 and frequency response with cabin gain.
Unit Converter
Power, torque, pressure, speed and more on a sliding scale.