RE: Pitch up with new prop!
I just weighed the 16/6. It weighed 3.25oz. The 16/4 is on the plane, but it is thinner than the 16/6. I had to cut out the spinner for the 16/6. It is a lot heavier in the hub and has thicker blades to hold the added thrust. I don't believe there is enough weight difference to cause what I saw. It also had a full fuel load near 16oz at takeoff. I was flying it 4oz. tailheavy then I added 4oz of lead to the firewall to get it to land without dropping the tail. It didn't fly like I saw yesterday before I added the weight. I'm still pondering on iy.