Ok- Digging up an old thread as I have some updates.
I was on a fairly big trip these last few days (6 hours flying one way) and so decided to have a play around with my adjustable prop and take some notes. This is what I found, and I would value your comments.
I took video so I know exactly what the values are.
So my AD is 1000ft up. On the take off roll at full fine on my prop, the RPM sits at about 5600 to 5700 on climb and the MAP is about 27.
Next AD was at sea level. At WOT on the take off roll, MAP hit 29 - similar RPM, maybe a little lower.
Once up in the cruise I started playing around with throttle and pitch and noted the following.
at 5500 feet up and at WOT, with the prop pitched to get RPM at 5200, MAP sat on 26, which going with the above graph is OK. Indicated AS of about 100 to 105kts.
So my question is, being as inexperienced as I am, is there a better way to do what I am doing.
I am not too concerned about fuel burn, but I would like to achieve a couple of things. Get as much speed as possible, treating the engine as kindly as possible - If that makes sense?
If I pitched the prop any more, the RPM would drop below 5200 and MAP would increase, and again, going by the graph above, that would be less than ideal.
So my questions is, should I wind the throttle back and fine the prop back up to get 5200? Would that not result in less speed, and why would it help?
Sorry to go over old ground, but I just want to try and do the best I can here - Always a student. ;)
Cheers
John
