The engine is a very important tool for us during the display. Because we are constantly flying lower and slower, so the crowd can get a better view of the planes and wingwalkers, there is little room for error if the engine should stop.
When we first flew the Baby Breitling Stearmans they were fitted with the great sounding Moki 250 radial engines. These engines give a lot of power from quite low throttle settings and have a fantastic sound. Even Sharon who isn't really into engines loved the sound of them. Unfortunately though, whilst using these engines we had a number of engine cuts which led to a few interesting landings.
Several types of fuel mixes and types were tried before we gave in and fitted Desert Aircraft 150 engines. Since the fitment of these we haven't missed a display or even had any uncomfortable moments with them. The DAs don't sound or look as good but they keep going, allowing us to concentrate on flying a good display.