RESPOND GEORGE ! ! ! ! !
RESPOND GEORGE ! ! ! ! !
George you are right about the conditons but I live in OHIO and it wasn't that hot.
I can't remember what the temp was that day,and the density altitude sure wasn't a problem.I guest what I'm trying to say is that I've owned this plane for 2 years now, and I always felt like it just did'nt climb like the other older planes with the same engine I flew sometime ago.I just need to know that my plane is safe.
I've had everything checked that I think would affect this.Can you give me any additional insight on this matter. I'm going to fly it this weekend to do some comercial maunuvers.I'll take note of the temp & density alt.
Sorry it took so long to get back to you .</HTML>
Re: RESPOND GEORGE ! ! ! ! !
<HTML>Well, Vaughn, keep in mind that the specs for a brand new airplane was only 645 fpm. Many times a pilot will be impressed with his airplane's performance on a particular flight, and that one day's performance will make the impression that is lasting. The pilot may forget that it was a cold day, or gusty wind, etc, when he saw 800 fpm. He just remembers the 800 fpm that he "used to see". If your airplane (and it's guages) are 30 years old, then you must consider all the things that may be influencing the VSI indication on any particular flight.
The correct way to determine engine performance (lacking dynamometer testing) is to set the brakes, and run the engine up to takeoff power and let it stabilize (facing into the wind, and on a dry clean surface) and take a tachometer reading with an accurate tachometer. Your engine, with a EM7653 prop should get a static rpm of 2230 - 2420 with Std Atmospheric conditions (S.L. 59 degrees F.)
If you get that static rpm , then your engine prop is meeting specifications. If your VSI is verified accurate as well as your AS and Tach, and you run the flight test in accordance with the aircraft performance data, then you should see ratings met. Those are a lot of variables for you to undertake. Only after all those are verified, should you begin to consider that your airplane has any problems. Aircraft rigging is the next thing to look for, and there's a very nice article in the October issue of the magazine regarding this.
I'd suggest you perform the static engine run and proceed from there.</HTML>
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