Comment

Comment by Bob McDonald on March 7, 2013 at 2:25pm

Here in Canada I fly with the 2 widths of duct tape over the oil cooler inlet NACA duct. Air temperature 0 F degrees. Do not cover up the oil cooler duct or radiator openings for 1st flight testing. The engine is tightly cowled and will make heat at 5200 - 5800 rpm. Static rpm (brakes ON) should be 5200 - 5250 rpm range. This will give 5800 rpm WOT in straight & level flight. I will take 10 - 15 minutes idle rpm to bring engine oil temps to 120 degrees for normal take off temps.

Comment by Rick George on March 4, 2013 at 7:25pm

John, thanks for the warning. Taxi testing - oil temp = 180 degrees F, during static run ups - started to climb to 200 degrees F. I removed the cover on the oil cooler. CHT 140 degrees F during taxi testing and 190 degreees F during static run ups. I'm use to Lycomings; taking a while to get comfortable with this "new fangled" engine.

Comment by John Marzulli on March 4, 2013 at 12:29pm

Be careful with covering too much of the oil cooler. Also do not worry about low CHTs or coolant temps.

Comment by Rick George on March 3, 2013 at 5:57pm

Thanks Norman. The 750 has been a really fun build. I'm really excited to be approaching the flying phase.

Comment by Normand Lambert on March 3, 2013 at 8:50am

Hi Rick,
Nice plane...isn't it nice to get to this point with something that you've built ?
I guess you already knew since it is not your first build.
Anyhow, always nice toget ther .
Good luck with your tests....
Norm