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Load is one of the key factors in producing the exhaust flow necessary to get your turbine spinning. High load = High exhaust flow. So seeing as how your rpm was limited to 4000+ with 50" manifold pressure, I would say your prop is putting way too much load on the engine. For the rotary this is almost in the "Lugging" stage rpm wise. For 50" I would like to see closer to 5500- 6000 rpm on the engine. Remember that your coolant flow and oil flow are directly dependent on RPM, so if the prop is holding the engine down in rpm BUT producing the power and associated heat - be careful that your coolant and oil temps are closely monitored. Just my 0.02 worth.
Ed
----- Original Message ----- From: "Bulent Aliev" <atlasyts@bellsouth.net>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent: Wednesday, December 14, 2005 10:11 PM
Subject: [FlyRotary] Another run-up
Today I decided to fire up the engine again and see how far I can go on the static rpm. As you may remember I totally removed the wastegate from my stock turbo. This time I was able to rich 4000+ RPM and 50" MP. Further advancement of the throttle did reduce the RPM slightly? Looks like the prop was too much for the engine? I was surprised to see such a high MP with two rather big holes below the turbine wide open.
Any comments?
Buly
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