Originally Posted by dtw_rv6
Would it capture the intent of your design if I were to shell out the existing outlet bump? That would eliminate the large flat area on my exit plug. Or are you implying that the exhaust tubes need to be much further apart (as in straight down from the cylinder ports)? My glasswork isn't necessarily pretty, but I'm working on it. The real issue for me would be custom exhaust fabrication.
However, now that I'm thinking of it, that might make for a very clean exit path for the cooling air -- straight back and down.
Larry and I think so too.
It's not really a design, but rather a concept. If developed further, yes, I would shrink the inlet scoop body as much as possible, and remove all of the outlet "coal shovel", leaving the least possible bump fairing for the nose gear.
Originally Posted by vetterman
One more note of interest. The turndowns offered as an option for the RV-8 only do to the tunnel design and exhaust pulsing on it.
That would be another case of your design desires being compromised by stock airframe considerations. Swapping the aluminum ramp for a one piece SS ramp, then damping the backside of the ramp and the first belly panel allows a slash cut tailpipe. Best way to damp the rearmost rivet in the floor stiffener (the one that cracks the skin) is to drill a .25" hole in the floor just above it and inject a small blob of Firebarrier 2000 into the enclosed space.