Ovation 1&2 Power Settings

[Txbyker]

I have been searching through post trying to ascertain good power settings everyone is using in their O1 and O2's.  Would any O drivers care to comment on what power settings you use for MP, RPM, and Mixture?  Specifically,

 

Take Off - I use WOT, full prop and keep the CHT in the white bar on the G1000 which is around 1375 all the way to level off

 

Cruise - 8000-12000 feet - I use WOT, 2400 RPM, and I lean to 100 degree ROP.  I am interested in your mixture settings for ROP and LOP.

 

Thanks!

 

Russ

 

[Cruiser]

I have the 310 HP conversion but that should not make any difference.

 

Take Off is WOT x full prop till 1000 AGL then I pull the RPM back to 2550 (max cruise setting) and use the APS leaning method to hold EGT to 1300°F on the way up.

 

Cruise - 6000 to 11,000 MSL depending on winds, my last trip was 6000' at 22.9 x 2430 @ 14.3 gph or 70% power making 168 KTAS @ 70°F LOP 

[N222VS]

I have been searching through post trying to ascertain good power settings everyone is using in their O1 and O2's.  Would any O drivers care to comment on what power settings you use for MP, RPM, and Mixture?  Specifically,

 

Take Off - I use WOT, full prop and keep the CHT in the white bar on the G1000 which is around 1375 all the way to level off

 

Cruise - 8000-12000 feet - I use WOT, 2400 RPM, and I lean to 100 degree ROP.  I am interested in your mixture settings for ROP and LOP.

 

Thanks!

 

Russ

I do everything the same , I don't have the G1000 so I keep mixture @ the top of the blue 1450 EGT

[carusoam]

O1, IO550(g), 280hp is limited to 2500 RPM. Standard 3 blade.

EGT kept in the blue box for climb (200-300 ROP)

Cruise 2500rpm, 100ROP at 11,500'. 175kts

Cruise 50 to 10 LOP at 11,500'. 165kts

Generally max throttle, max rpm, adjust mixture as required/desired.

O3, IO550(n), 310hp is limited to 2700 RPM. Hartzell Scimitar.

Cruise at 2550.

This is from memory, so it may not be all that accurate.

I will be trying to collect better data after engine Break-in over the next few months.

I have some learning to do still.

Best regards,

-a-

Russ,

Your EGT has a white box on the G1000 similar to the O1 EGT gauge, exept the box is blue. This is based on a 7th EGT sensor on one side of the engine at the confluence of three cylinders.

[ghovey]

Ovation 2 with the 310 STC. WOT and max RPM to 1500 ft then usually reduce rpm to 2400 to keep the CHT's under 400, at 5 k then I lean to the white line on the EGT. I run 15 degrees ROP up to 8500 then I run LOP 25 degrees lean. I also have GAMI injectors but I don't think there should be any difference. Cylinders made it to 1500 hours before replacement.

[jetdriven]

I have the 310 HP conversion but that should not make any difference.

 

Take Off is WOT x full prop till 1000 AGL then I pull the RPM back to 2550 (max cruise setting) and use the APS leaning method to hold EGT to 1300°F on the way up.

 

Cruise - 6000 to 11,000 MSL depending on winds, my last trip was 6000' at 22.9 x 2430 @ 14.3 gph or 70% power making 168 KTAS @ 70°F LOP 

70F LOP seems like it may be quite a bit leaner than BSFC_MIN

[Hondo]

Ovation 2 with the 310 STC. WOT and max RPM to 1500 ft then usually reduce rpm to 2400 to keep the CHT's under 400, at 5 k then I lean to the white line on the EGT. I run 15 degrees ROP up to 8500 then I run LOP 25 degrees lean. I also have GAMI injectors but I don't think there should be any difference. Cylinders made it to 1500 hours before replacement.

Barrett Performance Engines nickel treats Continental cylinders to extend their life.  Stock cylinders usually will not reach 2000 hours.

[harrispa]

See attached.  IO550G, 2400 rpm WOT (about 24")  LOP.

Paul