Find Hansen lives in Denmark and likes to build things for fun. Take this 12 centimeter true diesel model engine for example. He built a frame four stroke diesel and after several experiments he was able to adjust the injection timing when the engine is running and is now able to cold start the thing by hand. It is a Bore-stroke 20-40. Compression ration 21-1 and runs on Kerosene. Makes you want to see what else this guy has in his work shop.