hiddenhearth
Member
I am a new member in need of some info. I recently purchased a beautiful RV-6 with an Aerosport O-360 w/ 9.2 pistons and C/S prop. The engine has one EI and one mag. I just finished installing a new EI graphic engine monitor and a EI fuel flow/totalizer. I am beginning to get used to the aircraft and trying to get a handle on appropriate power settings, leaning techniques, and fuel flow readings.
Even with the EI analyzer, leaning by CHT seems a bit inaccurate. Not sure if I am getting the false peaks the manual talks about. If I had some fuel flow numbers to shoot for it would be a big help. I thought this airplane burned about 9.0 gal at 75% at 8000. My numbers seem about 20% higher.
I have been cruising at about 23 inches and 2350 RPM and have found the egt's to be in the 1150 range and the fuel flow to be about 11.5 at 6500 feet. This is about 100 ROP on the leanest cylinder. These numbers seem cool on the EGT and high o the fuel flow to me!
If anyone has the same engine I would be interested to know your power settings and EGT/fuel flow numbers. Here are some of my related questions?
My 0-360 manual does not take the higher compression pistons into account on the power charts. What would 65% and 75% power settings be? Is it considered appropriate to operate at cruise using 75% power with the higher compressiion pistons? What cruise power settings are recomended with these pistons?
How many degrees ROP is recomended with this engine? 100 degrees seems to produce very cool EGT's and high fuel flows.
What kind of EGT's and fuel flows show I be showing at the recomended cruise power settings at 3, 6, and 9K.
I would really appreciate some help or a good reference for these questions
I live in the Washington DC area and would love to go for a ride who is an expert on this stuff.
Most of my flying experience is with jet fuel and I am feeling a bit rusty on the recip engine particulars.
Thanks for the help!
John C
Even with the EI analyzer, leaning by CHT seems a bit inaccurate. Not sure if I am getting the false peaks the manual talks about. If I had some fuel flow numbers to shoot for it would be a big help. I thought this airplane burned about 9.0 gal at 75% at 8000. My numbers seem about 20% higher.
I have been cruising at about 23 inches and 2350 RPM and have found the egt's to be in the 1150 range and the fuel flow to be about 11.5 at 6500 feet. This is about 100 ROP on the leanest cylinder. These numbers seem cool on the EGT and high o the fuel flow to me!
If anyone has the same engine I would be interested to know your power settings and EGT/fuel flow numbers. Here are some of my related questions?
My 0-360 manual does not take the higher compression pistons into account on the power charts. What would 65% and 75% power settings be? Is it considered appropriate to operate at cruise using 75% power with the higher compressiion pistons? What cruise power settings are recomended with these pistons?
How many degrees ROP is recomended with this engine? 100 degrees seems to produce very cool EGT's and high fuel flows.
What kind of EGT's and fuel flows show I be showing at the recomended cruise power settings at 3, 6, and 9K.
I would really appreciate some help or a good reference for these questions
I live in the Washington DC area and would love to go for a ride who is an expert on this stuff.
Most of my flying experience is with jet fuel and I am feeling a bit rusty on the recip engine particulars.
Thanks for the help!
John C