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On 3/5/2011 10:00 AM, Chris Barber wrote:
While some of the stuff can sting a bit (since I may have a tinge of feeling stupid), never, more than it helps.
Hey, Chris. I've been there and done that. It ain't no fun. And, I eliminated many of the tears by having Bruce T build my engine, so I didn't have to venture as far and deep as you have. As you may recall, it took me about 2 years from engine start to take-off, with many trials and tribulations between (many of my own making). I too learned a great deal from the experience - but I admin I got to the point that I really didn't care to learn anything else. I think your boost is very low. It'll barely be enough to make up for what the turbo uses. I use 6 psi (44 MAP) on take-off, and that second 3 psi make a whole bunch of difference.
Discovering the failure modes on the ground (and above the field) makes this a much safer endeavor. Keep doing what you're doing... but I do think it's possible to over test. At some point you have to just point the thing down the runway, grit your teeth and push the throttle (but be ready to back off if everything isn't perfect). One tip I might add before you do that - sit in the plane at night with the engine running and no interior lights on. Can you find the mixture, ignition and fuel pump switches, injector switches and EC2 a/b switch etc. quickly, by feel alone? Turn the lights on and off until you can. Run the possible failure modes and corrective actions over in your head. An example from my testing would be - you're at 200 feet and boost goes to zero - what do you do?
Kelly. I think I recall about 110 intake temp in high power cruise at altitude. Boost on take-off is 44 map (6 psi) max, but I often use less if I don't need it. Climb, about 40. Cruise at 10,000 feet is about 30 MAP (ie equalized). EGT at cruise is around 1650. Keep in mind that all this is from memory - I haven't even SEEN the plane since October. It's sitting in a hangar in Rutland, VT with 3 feet of snow blocking the doors. (77F in West Palm Beach today :). I hope to get back to it later this month or early next.
Regards,
John
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