Ran the engine today on test stand with puzzling results, started with a old school TopFlite 9-6 Super-M 7300 rpm, switched to a Master Airscrew 9-6 and it would not reach 7000 rpm, I would have thought the MA would have turned faster than the TF with the wide cord. Tried a Zinger 8.5-4 Max rpm was reached with compression screw all the way to the stop, and it would not turn as fast as the TF 9-6.
I am starting to suspect bad fuel I just bought 2.5 Gallons of Davis Fuel from Tower Hobbies but don’t know how long it’s been on their shelf? Also the cans that Davis use now have a plastic spout and cap assembly. You can smell either when you open the bubble wrap that they ship the cans in. I do have some John Deer Starting Fluid (80% either) could I add some of that to the fuel and see if there is improvement? How much?
Tweedy