I built a Brodak Electric Ringmaster using the recommended package with the 9 x 4.5 prop. The plane just seems to have no authority. Line pull on 60' lines felt too light. I put two flights on it and didn't want to try anything more than a wingover and a loop. The plane barely pulled through the loop. I'll give it a couple more flights, maybe max out the RPM, but I'm wondering about an alternate prop to the 9 x 4.5. Looks like my only APC alternatives are a 9 x 6 or a 10 x 5 prop. Seems a 6" prop would be too fast, and a 10" prop might be too much current draw.
What do Y'all think? Try a different prop? Or is it just me and I need to learn to fly the recommended setup?
Mark