---------------------------------------------------------- RV9-List Digest Archive --- Total Messages Posted Sun 02/27/05: 2 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 06:46 AM - Re: Power Settings (David Edgemon) 2. 09:09 AM - Re: Rpm on 0320 (Neilekins@aol.com) ________________________________ Message 1 _____________________________________ Time: 06:46:00 AM PST US From: David Edgemon Subject: RV9-List: Re: Power Settings --> RV9-List message posted by: David Edgemon Okay lets try this again. Sorry about the formatting last time. Gotta love Microsoft word. I also threw in some data from tests that I did back in December. Gives you a feel for how the 9 does up high and at difference power settings. These flights were made before fairing the nose gear and gear leg but the main wheel pants and leg fairings were in place. I've subsequently installed the nose gear pant and fairings but have not redone the tests. I would "guess" that maybe theirs another couple of knots there but I'm not sure yet. > >________________________________ Message 1 _____________________________________ > > >Time: 05:17:10 PM PST US >From: David Edgemon >Subject: RV9-List: Re: {pwer Settings > >--> RV9-List message posted by: David Edgemon > >Steve, >I've enclose the chart that I use with my RV-9A. I'm using an Aerosport >0-320-D1A with a Hartzell constant speed prop. The data for the table >came straight out of >the Lycoming Users Manual. Their chart is a pain to use but I've done it >and will not have to again. > >I find that normal flying with the guys (3000' to 5000' ) tends to be >done around 23/2300 to 24/2400. By myself I tend >to fly higher (around 7000' to 8000' ) and run wide open at 2300 or 2400. > >Another setting that kind of neat when you're just loafing around is >2200 and 18 or 19 inches. This is about 50 % and is good for 130 - 135 >knots. Just amazing. > > > Power Chart (Percentage) > > > > Power Chart (Percentage) Percent Power vs Density altitude Map RPM 0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 11000 12000 18 2000 0.34 0.37 0.39 0.40 0.42 0.43 0.44 0.45 0.46 0.48 0.49 0.50 0.52 20 2000 0.44 0.45 0.46 0.48 0.49 0.51 0.53 0.54 0.55 0.56 0.58 21 2100 0.51 0.52 0.54 0.55 0.56 0.58 0.59 0.61 0.61 0.63 18 2200 0.41 0.42 0.43 0.44 0.46 0.47 0.48 0.49 0.51 0.52 0.53 0.54 0.56 20 2200 0.49 0.50 0.51 0.53 0.54 0.56 0.58 0.59 0.60 0.61 0.62 21 2200 0.53 0.54 0.55 0.57 0.59 0.60 0.61 0.63 0.64 0.66 22 2200 0.58 0.59 0.61 0.62 0.64 0.65 0.67 0.68 20 2300 0.52 0.53 0.54 0.56 0.58 0.59 0.60 0.61 0.62 0.63 0.65 21 2300 0.56 0.58 0.59 0.61 0.62 0.63 0.64 0.66 0.67 22 2300 0.61 0.62 0.63 0.65 0.67 0.68 0.69 0.71 23 2300 0.66 0.67 0.69 0.70 0.71 0.73 0.74 18 2400 0.47 0.48 0.49 0.50 0.52 0.53 0.54 0.55 0.57 0.58 0.59 0.60 0.61 20 2400 0.56 0.58 0.59 0.60 0.61 0.62 0.63 0.64 0.65 0.66 21 2400 0.60 0.61 0.62 0.64 0.65 0.66 0.68 0.69 0.71 22 2400 0.64 0.66 0.67 0.69 0.71 0.72 0.73 0.74 23 2400 0.69 0.70 0.71 0.73 0.74 0.76 0.77 24 2400 0.74 0.75 0.76 0.78 0.79 0.80 23 2500 0.72 0.73 0.74 0.75 0.76 0.77 0.79 24 2500 0.76 0.78 0.79 0.80 0.81 0.83 25 2500 0.81 0.83 0.84 0.86 0.86 18 2600 0.52 0.53 0.54 0.55 0.57 0.58 0.59 0.61 0.62 0.63 0.64 0.65 24 2600 0.79 0.80 0.81 0.83 0.84 25 2600 0.84 0.86 0.88 0.91 26 2600 0.89 0.90 0.92 20 2700 0.63 0.64 0.65 0.66 0.68 0.69 0.71 0.72 0.73 0.74 21 2700 0.68 0.69 0.70 0.71 0.73 0.73 0.74 0.76 0.77 22 2700 0.72 0.73 0.74 0.76 0.78 0.79 0.80 0.81 23 2700 0.77 0.78 0.79 0.81 0.83 0.84 0.84 24 2700 0.81 0.83 0.84 0.86 0.88 25 2700 0.86 0.88 0.89 0.91 26 2700 0.91 0.93 0.95 27 2700 0.96 0.98 12-27-04 High Altitude flights Notes: No nosewheel pant or nose gear fairing. 8500 msl 8340 DA 2 deg. C OAT 2400 rpm @ 22.1 MAP (Wide Open Throttle) EGTs 1364 1285 1321 1291 spread = 79 CHTs 347 358 352 338 spread = 20 156 knots TAS 10500 msl 10420 DA -1 deg. C OAT 2400 rpm @ 20.4 MAP (Wide Open Throttle) EGTs 1336 1265 1291 1262 spread = 74 CHTs 337 333 336 325 spread = 12 154 knots TAS climb rate at 10500 ~ 1200 fpm 12500 msl 12370 DA -5 deg. C OAT 2400 rpm @ 19.0 MAP (Wide Open Throttle) EGTs 1310 1229 1247 1228 spread = 82 CHTs 343 330 339 325 spread = 18 151 knots TAS climb rate at 12500 ~ 1000 fpm 12/31/04 Misc. power settings Notes: No nosewheel pant or nose gear fairing. Density Alt Power Setting True Airspeed % power 4500 23/2300 144 72 2500 23/2300 143 70 2500 22/2200 135 62 2500 20/2000 125 47 8000 22/2600 162 80 8300 22/2400 156 75 ________________________________ Message 2 _____________________________________ Time: 09:09:56 AM PST US From: Neilekins@aol.com Subject: Re: RV9-List: Rpm on 0320 --> RV9-List message posted by: Neilekins@aol.com Yes, My wheel pants and faring's are on