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).

Pilot Side Exhaust Stack

Close-Up Pilot Side

Pilot Side Cowling Cut

Exhaust Mock-Up Looking from Rear

Cowling with Mock-Up from Rear

The Finished Exhaust

Exhaust from Behind

EGT Probes Installed

Exhaust Safety

Posted By: Brett Ferrell
Thursday July 14th, 2005 at 5:28 PM

Categories: Exhaust
Tags: Building Custom Aircraft Exhaust Engine Exhaust Fuselage

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