Some phase 1 performance data

[hlangebro]

I now have 20.7hrs on N456HL. Everything is working out well and the Dynon skyview is fantastic! I have a 7A with a O-320 D3G 160hp and a ground adjustable Whirlwind prop.

Test were made with 1 pilot and full fuel. Altitudes are Density altitudes.

5000ft, 65%, 144KTAS, 5000ft, 75%, 155KTAS

7500ft, 65%, 145KTAS, 7500ft, 75%, 161KTAS

10000ft, 65%, 156KTAS, 10000ft, 73% WOT, 164KTAS

12000ft, 66% WOT, 163KTAS

I am pretty happy with these numbers. The D3G is a bit more thirsty than I anticipated, but it runs well for a half time engine!

 

[PIN 37]

Hi, nice aeroplane and looks like good numbers to me. Could I ask you where you got your standby altimeter and what brand is it. I like the look of your panel.

 

[hlangebro]

Altimeter and Airspeed

Hi,
the altimeter and airspeed are 2 1/4" UMA's from aircraft spruce. They seem to work fine.
I also have the short James cowl on this plane and a cowl flap. the cowl flap is a must as I see high CHT's at climbout, even with the flap open. I have adjusted the gaps between the cylinders and baffles, and I am still tweeking this to get more even temps. If I do a power climbout I will see about 405-410 on #1. #3 used to be the hottest, but with more of a gap behind the cylinder it dropped, but #1 went up...
Overall it works fine. The 2 axis autopilot works great too.

 

[Fred.Stucklen]

At 20 hr on the engine, it should be broken in and not consuming too much oil. It's probably thirsty because your still running it full rich. Try leaning it out a bit. At 20 hrs is should be OK to start leaning..... Put a pair of electronic ignitions on it (like P_MAGs) and you can probably lean it out lean of peak. I have an IO-360 with dual P-MAGs and generally get 7.2 GPH down low at 75% power.....

I now have 20.7hrs on N456HL. Everything is working out well and the Dynon skyview is fantastic! I have a 7A with a O-320 D3G 160hp and a ground adjustable Whirlwind prop.

Test were made with 1 pilot and full fuel. Altitudes are Density altitudes.

5000ft, 65%, 144KTAS, 5000ft, 75%, 155KTAS

7500ft, 65%, 145KTAS, 7500ft, 75%, 161KTAS

10000ft, 65%, 156KTAS, 10000ft, 73% WOT, 164KTAS

12000ft, 66% WOT, 163KTAS

I am pretty happy with these numbers. The D3G is a bit more thirsty than I anticipated, but it runs well for a half time engine!

 

[hlangebro]

Engine

Well, as I mentioned, my engine is a half time engine with 1020 hrs on it. Compression is great and the engine runs wonderfully. I agree with the P-mags. Mine is carburated so it will be tricky to run lean of peak.

I do lean it is as much as I can.

Book numbers for the D3G are 10gal/hr at 75% and 8.8 at 65% and that seems to be the case. Very similar to a O-360 as I had in mine previous aircraft, a C177 Cardinal.

Down the road I might have Lycon do some magic on the engine and soup it up to around 190-200hp, still reliable though.
P-mags is also on the wishing list as well as a constant speed Whirlwind.