skyking1 Posted September 24, 2018 Report Share Posted September 24, 2018 I am curious to see what other people have for cruise speeds at ten and twelve thousand. My eagle has a true of 186-188 at ten and 182-184 at twelve rop Quote Link to comment Share on other sites More sharing options...
carusoam Posted September 24, 2018 Report Share Posted September 24, 2018 Start with the power settings you use... Then throw in FF for fairness... a pic of the instrument panel, because somebody always claims you are going down hill... The O generally cruises. 175 ROP or 165 (a few degrees)LOP... 10-12k’ 2500 rpm 12.5 gph LOP 15gph ROP With The 310hp STC the numbers increase a bit cruising @2550... (from old fuzzy memories) Best regards, -a- 1 Quote Link to comment Share on other sites More sharing options...
Niko182 Posted September 24, 2018 Report Share Posted September 24, 2018 right around 180knots in California were temps are way above ISO. when coming back from kenosha, I saw around 184 to 185 at 10000. 1 Quote Link to comment Share on other sites More sharing options...
kmyfm20s Posted September 24, 2018 Report Share Posted September 24, 2018 Here is my fastest KTAS recorded just this weekend, 203 KTAS. I had an unusual uplift which I assume was from the tail of an oscillating mountain wave. You can see I’m pitched down in cruise on my AI. I have the Screaming Eagle conversation, I usually see 173 KTAS LOP above 7500’ at 2400 rpm and 13.1 gph. As I go up in altitude I increase rpm and decrease FF and stay at 173 KTAS. I have the draggy A/C ducts on the airframe which I hear slow you down about 5 kts. 1 Quote Link to comment Share on other sites More sharing options...
jhbehrens Posted September 24, 2018 Report Share Posted September 24, 2018 I always fly about 15F LOP and get around 176-178 KTAS at 10,000 ft on 13.3 gph or so. If I get down to 50F LOP I get about 175kts TAS. I have the Screamin' Eagle conversion with metal 3-blade Scimitar prop. 1 Quote Link to comment Share on other sites More sharing options...
Chris K Posted September 24, 2018 Report Share Posted September 24, 2018 (edited) I've done mostly flights to/from my avionics shop and mechanic so far with my new Eagle while doing add ons and maintenance so mostly been flying below 4000. Because I'm under class B and flights are short, I'm running 2200-2300 RPM, 20" MAP, FF varies between 12 - 13. At these settings down low seeing 176-177 KTAS. Should manage well over 180 once I do some real cross country flying higher up. My plane is exceptionally clean and I bought it specifically because of its low weight (about 2237). I'm still also checking whether my throttle and fuel flow is correctly set since I seem to be losing 1 inch of MAP on full power takeoff. I will post more as I learn more. Edited September 24, 2018 by Chris K Using 2 RPM settings 1 Quote Link to comment Share on other sites More sharing options...
skyking1 Posted September 25, 2018 Author Report Share Posted September 25, 2018 Thanks for the help. I fly rop and wot 2550 rpm. Ff about 16-17 gals . At 13000 ff 15 100 rop Quote Link to comment Share on other sites More sharing options...
Chris K Posted September 25, 2018 Report Share Posted September 25, 2018 21 hours ago, kmyfm20s said: Here is my fastest KTAS recorded just this weekend, 203 KTAS. I had an unusual uplift which I assume was from the tail of an oscillating mountain wave. You can see I’m pitched down in cruise on my AI. I have the Screaming Eagle conversation, I usually see 173 KTAS LOP above 7500’ at 2400 rpm and 13.1 gph. As I go up in altitude I increase rpm and decrease FF and stay at 173 KTAS. I have the draggy A/C ducts on the airframe which I hear slow you down about 5 kts. What do you typically see for IAS at 15k? Quote Link to comment Share on other sites More sharing options...
kmyfm20s Posted September 25, 2018 Report Share Posted September 25, 2018 24 minutes ago, Chris K said: What do you typically see for IAS at 15k? Quote Link to comment Share on other sites More sharing options...
Chris K Posted September 25, 2018 Report Share Posted September 25, 2018 200 mph at 15.5 with a NA plane is quite nice. I've flown a 252 that can match that speed at 15.5 but burned more fuel. Too bad Mooney still does not build a stripped down version of the Ovation. Quote Link to comment Share on other sites More sharing options...
Chris K Posted September 28, 2018 Report Share Posted September 28, 2018 On 9/24/2018 at 10:48 AM, Chris K said: I've done mostly flights to/from my avionics shop and mechanic so far with my new Eagle while doing add ons and maintenance so mostly been flying below 4000. Because I'm under class B and flights are short, I'm running 2200-2300 RPM, 20" MAP, FF varies between 12 - 13. At these settings down low seeing 176-177 KTAS. Should manage well over 180 once I do some real cross country flying higher up. My plane is exceptionally clean and I bought it specifically because of its low weight (about 2237). I'm still also checking whether my throttle and fuel flow is correctly set since I seem to be losing 1 inch of MAP on full power takeoff. I will post more as I learn more. The MP reported above was indeed incorrect due to the inaccurate MP gauge. My MP gauge has since been adjusted and I will post corrected numbers once well away from Bravo airspace... Quote Link to comment Share on other sites More sharing options...
Chris K Posted September 30, 2018 Report Share Posted September 30, 2018 Here are some shots from yesterday's flight. Could not get above 5,500 on the short flight but these 3 settings were flowing between 13.9 and 14.8 GPH. Was flying through some light chop, so the IAS on the Dynon was off a couple knots from my ASI (the TAS reading was not quite set correctly either - ignore the faulty #3 cylinder reading as well). This was good for mid to high 170's KTAS down low depending on whether you look at the Dynon or the ASI. Higher altitude should be 180+ KTAS which is better than POH book values. This was with the 2 blade McCauley prop. I'm finding that burning more than 14 GPH seems to only gain a knot or two per extra gallon of fuel burned and unless saving a minute of time counts, not worth burning that much fuel. Quote Link to comment Share on other sites More sharing options...
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