Ron Lee
Well Known Member
Yesterday on the way to Creede Colorado a RV-8 pilot and I decided to check actual speeds side by side....full throttle/best speed possible. We were at 12,500' I believe. There may have been around a 10 knot tailwind component but using GPS groundspeed I reported 176 knots and he reported 177 knots.
So considering the short run and data collection inaccuracies, we were essentially the same speed.
I think both engines are O-360 but I have 9.2:1 pistons, flow matched carbureted engine and FP prop (Catto three blade). His engine is 200 HP and with my improvements mine may approach that.
He has a 3 blade MT prop. (correction from initial erroneous Hartzell prop statement)
I have one Lightspeed ignition and he has two.
So considering the short run and data collection inaccuracies, we were essentially the same speed.
I think both engines are O-360 but I have 9.2:1 pistons, flow matched carbureted engine and FP prop (Catto three blade). His engine is 200 HP and with my improvements mine may approach that.
He has a 3 blade MT prop. (correction from initial erroneous Hartzell prop statement)
I have one Lightspeed ignition and he has two.
Last edited: