Lars, Thank you for the great pictures. That engine looks to be just the right size for that plane. I bet that Stearman loves the near zero vibration. Pete thanks for your better directions helping Lars.

My topic for today has to do with corrosion prevention. I do like running my radials on 8% oil and 7% nitro. That is part of the reason I do not use one-board glow power. When I am finished for the day I will start the engine after the tank is drained and let it quit on its own. I will then start it again and it will run a bit and quit. I will do this until it will not fire. Now I know there is no residual fuel in the engine. Now I remove one of the top pushrods and the follower so I have a hole directly over the cam ring and the rear main bearing. Into that hole I squirt about 10 ml of air tool oil chased with 2 ml of Evolutions Blue-block. I put the follower and the pushrod back and turn the prop over 3 to 5 times. The engine several days later is still creamy smooth indicating no corrosion. A major discovery I found. DO NOT use exhaust back pressure. The exhaust has highly corrosive effects on the engine. The carbs on these engines have plenty of draw if the tank is at the correct height and close to the engine. -Tom