The first of these was the second I/C engine I made. I had bought a copy of the drawings for the 'Morton M5' and this engine is based on that design. I learned a lot from that project. The second engine 'JEMMA' was the first engine I drew from scratch. It was an attempt to design my own radial and at the same time learn to use a cad programme (Turbocad , free with a computer mag).