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The Protar (Italy) 1/9th scale Montesa Cota 247 trials bike is no ordinary plastic kit. Despite its age, it ranks as an engineering masterpiece. For example, the steering head and wheel axles, although made of plastic (some later motorcycle kits have such items in metal) they screw into place. The plastic is strong enough to take the torque that I sometimes found necessary to apply with pliers to finish the screwing in. The flexible plastic chain works (after a fashion). That is, when the rear wheel turns, the chain rotates and turns a sprocket hidden under the engine cover. Even the suspension works!
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