Based on a study that David Ullman did on VGs for the top of the Velocity, specifically to generate better airflow into the cooling NACA ducts, I’ve decided to replicate his experiences. He determined that larger vortex generators that are typically used on airfoils would be required to get into the high energy air at the edge […]
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Our cooling is generally fine, but on hot days when we stay in the pattern, the CHT’s get warmer than I would like. Luckily we know Terry Schubert, of CSA fame, and he’s just the guy to give us some tips. So, we setup for him to come down with some aquarium hose, air stones, and we […]
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I’m almost done with my modifications to my plenum to improve the cooling air seal. I’m adding silicone everywhere, it seems. Along the way, I decided to see what the SE manual said in this regard, and I have to say, this is a picture that definitely should be in the XL manual. Aside from […]
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So, although we’ve never had issues with our engine really running hot, it’s not been cool either. I’ve been a bit worried about it since our constant-speed prop will be shipping soon. With it, a much higher RPM will be available to us for climb-out, and with higher RPM comes higher engine horsepower. That’s all great, in […]
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It’s Deja Vu all over again. I swore that we wouldn’t fly with these soft aluminum tubes again, and here we are about to do it. So, a couple of things, we’ve studied carefully how you’re supposed to insure that your flares are good. Secondly, if we find that the larger hard tubing does give […]
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Here you can see where we’ve added a couple of vortex generators to each NACA to try and improve cooling to the engine. I also made tabs on my slip joints for the runners to allow us to tighten them down. NACA Vortex Generators
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