The first ever soft mounted engine
This was the first aerobatic (may be even the first model aircraft) to have a soft mounted engine. This was the late seventies and little had been done to reduce noise levels, indeed aerobatic models generally had a bad name for high noise levels. We we sill running at high RPM levels with 11 x 7 1/3 propellers. The idea was born when Schluter helicopters used a small hard rubber bobbin on their undercarriage mounts. I managed to buy four as spares and the soft mount was born. Noise levels dropped from a 106 dbA to 96 dbA. A two metre aerobatic model of today is one of the quietest aircraft in the competition scene, a tribute to those who took on the idea and developed so many new innovations to reduce noise levels.