R&W Labs  /  Lab 01: X-Ray

Under the skin.

Race car engineering, aero and technology, explained by taking the car apart. Move over the car to see what's inside.

Side profile of a black and orange prototype race car The same car as an x-ray cutaway showing the tub, engine, gearbox, radiators and brakes
Scanning Point at a part to learn what it does.

The Labs

Each lab is one idea you can play with. Move a slider, watch the physics respond.

Lab 02  /  Aero

Downforce grows with the square of speed.

Double the speed and the wings push down four times harder. Past a certain speed, the car makes more downforce than it weighs. That's why "it could drive upside down" gets said so often.

Downforce vs speed /

Move either slider. Watch the orange curve and dot respond.

200
8°
Downforce · equiv. load
—
Drag
—
Power lost to drag
—
Upside-down speed
—

F = ½ · ρ · v² · CLA  ·  simplified model, 1,030 car

Click any underlined unit to switch the whole site. Downforce is shown as an equivalent load; drag is force.

Lab 03  /  Brakes

Carbon brakes only work hot.

Carbon-carbon discs have a temperature window. Cold, they barely grip. In the window, they bite hard. Too hot, the carbon starts to oxidise and wears away fast. Teams tune the brake ducts to keep them in range.

500
Grip (friction μ)
—
Wear rate
—
State
—

Illustrative curve. Real values vary by compound and supplier.

Carbon brake disc behind a race wheel

Lab 04  /  Data

How to read a lap trace.

This is a simulated lap, drawn the way a race engineer sees it. Switch to the raw bus view to see the same lap as the messages the car's computers send each other.

Lap 1   0:00.000
0
RPM0
GearN
Brake 0
Lateral g0.0

In the workshop

Pushrod suspension on a carbon tub
Next labSuspension: why the springs live inside the car
Racing engine and sequential gearbox
Next labGearing: picking ratios for a track