Sunday morning free flight

This morning, we had beautiful weather with sunshine, clear sky and no wind. The cereals in the field across the road are long gone. I took my nephew aged 9 out to the field for some free flight sessions.

The Flying Sorcerer had an engine problem and was underpowered. The engine started immediately on priming but ran too slow with variable revs and finally stopped each time. I had this a few weeks ago already. I then found out that 1 of the bosses of the back plate screws broke. That’s the second time I have this happen. Today, after replacing the back plate, it wasn’t any better. I suspected an air leak somewhere.
I put the plane aside and flew my Wing Ding with more success. Although the rear part of the rudder is missing, this did not influence flights. After a few flights I changed prop and mounted a 3 bladed prop  backwards; 3.125x2.5 that Bernie sells but for this plane wasn’t any good. The reduced prop diameter gave higher revs and too much power. The plane made loops and crashed before the tank was empty. In circles but gliding down was too much in a straight line. After flying, I moved the coin, stuck on the right wing further out towards the tip. This should be better but need to confirm at the next flight.