OneTwoSierra
Well Known Member
I know there are lots of people interested in the 3-bladed Catto prop and how it performs. Here's my current setup and the numbers I'm seeing:
Fairings/pants: I do not have the main gear wheel pants on, but I have the main leg fairings and upper intersection fairings, and the nose gear leg fairing and nose wheel pant. What I'm missing are the main wheel pants and lower intersection fairings, and the nose gear upper intersection fairing.
At 2450 rpms, I'm getting exactly 140 knots true (161.3 mph) straight and level.
At 2150 rpms, I'm seeing exactly 120 knots true (138.2 mph) and I lean for something less than 5.5 gph (I need more tests to find out exactly the fuel burn.)
Top speed test results aren't in. I did get this prop to spin at 2730 rpms straight and level and that yielded 163 knots true (187.5 mph) on one flight, but I haven't repeated this test.
I should have the 40 hours flown off this week.
Brian
N9612S
Fairings/pants: I do not have the main gear wheel pants on, but I have the main leg fairings and upper intersection fairings, and the nose gear leg fairing and nose wheel pant. What I'm missing are the main wheel pants and lower intersection fairings, and the nose gear upper intersection fairing.
At 2450 rpms, I'm getting exactly 140 knots true (161.3 mph) straight and level.
At 2150 rpms, I'm seeing exactly 120 knots true (138.2 mph) and I lean for something less than 5.5 gph (I need more tests to find out exactly the fuel burn.)
Top speed test results aren't in. I did get this prop to spin at 2730 rpms straight and level and that yielded 163 knots true (187.5 mph) on one flight, but I haven't repeated this test.
I should have the 40 hours flown off this week.
Brian
N9612S