Here I’m fitting up the prototyping components from Aircraft Exhaust.Net. They sent use 6 stubs to mount to the engine exhaust ports and a collector, though I elected not to use the collector. The nice thing about this system, is you can get what you think you want exactly in cheap PVC, and then send it to them for fabrication to your specifications. I think that this is going to work out really well for us. We’re going to eventually mold exhaust augmenting ducts on to the cowling so the high pressure exhaust flow pulls a slight vacuum on the cowling (and lower portion of the engine) to improve cooling air flow, especially on the ground. This will also cool the exhaust stream before it reaches the prop, and provide some thrust (rather than the typical aerodynamically ruinous rooster-tail effect the factory exhausts create). Jack Morrison of E-Racer fame has done this sort of thing with his supercharged Magnum engine, and is very pleased with the result, so we’re hopeful (check him out in the November 2003 Sport Planes Magazine).