Brass Era Garage

0.0km/h

— · 0rpm

0.0m

Brake

Gas

Loading…

Throttle

Pedal

Lever

Inputs, last 8 s

ThrottleBrakeLever

0° Steering

Axle travel against the stops

FrontRear

FrontON STOPS 0% · 0.0 mm

RearON STOPS 0% · 0.0 mm

Ride

4 of 4 on the road

0.00 g

Vertical acceleration of the body at seat height, RMS over the last 2 s.

—

Drive

Hand throttle

Brake lever

Driver holds the straight line

Steering

Road

Bump course Flat road

Bars 30 to 50 mm from 10 m, some under one side only, then a 15 mm washboard. Further on, cows: scenery only, and they always step aside. Drag to orbit; scroll to zoom.

Keyboard, gamepad and pedals

Gamepad: right trigger throttle, left trigger brake pedal, left stick steers, bumpers change gear, A toggles the brake lever, Y the driver, Start restarts. The on-screen pedals work with a mouse or a finger: press higher on a pedal to press it harder.

About this simulation

Every car runs on MuJoCo's official WebAssembly build, the same engine version as the repository's Python validation. Each car's model is its validated file: bodies, joints, springs, tyres, engine and brakes. For each car, the build drives its own Python controls over a launch and a brake application. parity_test.mjs checks that this page's controls reproduce the result.

The hand throttle scales engine torque below the governor. The cars had governors, hand throttles or both; the throttle is this page's common control.
Settings you change here are for exploring. Only the design values passed the repository's checks.
The tyres are stiffer than real tyres of the period, so wheels lift more on bumps.

Run it locally from the repository: .venv/bin/python experiments/web/build.py --serve, then open localhost:8321/local.html.