Wood go-kart

I got hooked on motorsports and, instead of buying a go-kart, built one from the ground up to understand how it works.

24 mphtop speed

The finished wood go-kart in a garage: timber frame, blue Predator engine, steering wheel and four knobbly tyres — View AWood go-kart

Project details
RolePassion project: design, sourcing and build, solo		DatesJan 2025 – Aug 2026
ContextPersonal project	ToolsCAD, Predator 212cc, Wood and metal fabrication

Design

Sketched concepts, researched and bought parts, then built a CAD model before cutting anything.

Chose a wood frame for simplicity. A Predator 212cc engine drives the rear axle through a torque converter and a chain and sprocket.

Bolted the front axle to wooden extensions to give the steering a greater range of rotation.

Close-up of a steering spindle with a castle nut and tie-rod end — Fig. 1Steering spindle

Close-up of the torque converter with its drive belt — Fig. 2Torque converter

Construction

Built the frame first, then assembled the rear axle, sprocket, brakes and bearings and bolted the rear assembly to the frame.

Mounted the steering, seat and engine on planks fixed with wood glue and screws.

Timber frame with the rear axle and bearings mounted across it — Fig. 3Frame with rear axle and bearings

Top-down view of the frame with the engine, rear wheels and axle fitted — Fig. 4Engine and rear wheels fitted

Kneeling beside the frame, working on the brake assembly — Fig. 5Fitting the brake assembly

Brakes, throttle and safety

Linked the master cylinder to the left pedal with braided steel cable, run through screw eyes so it cannot tangle.

A 5 kg return spring on the throttle cable and a 6 kg spring on the pedal bring both back reliably.

Added a backup handbrake in case the main brake fails and an emergency throttle release in case the engine misbehaves.

Hydraulic brake master cylinder and caliper with braided brake line on a workbench — Fig. 6Brake master cylinder and braided line

Side view of the finished go-kart in the garage — Fig. 7Finished kart, side view

Results

24 mph
Top speed: 175 lb
Weight: 12 hp
Power

What I learned: how subsystems like the drivetrain and steering work together, and that I could take a project from pieces of wood to something that actually drives.