This Collectors' Series model illustrates the principle of the four-stroke cycle in an internal combustion engine.
Once built, this marvellous kit moves as an internal combustion engine does, with the piston completing four separate strokes intake,compression, power, and exhaust. All the movement can be seen through the cut-outs in the model.
No of parts: 68, Dimensions: W 122 x H 198. Skill Level: 3. Requires painting.
Age: 8+ years. Part of the Airfix Kitset Collection.