ORIGINAL: acdii
Well, after flying my Kadet yesterday for the first time in hot humid weather, I can definitely say the temp and humidity play a big role. The plane was just not the same. It lost altitude quickly, the motor wasn't producing as much power, I normally fly at half throttle, but I was almost at full to get at near same performance. My last flight I was doing some T&G and after the last touch, I went to go, and the motor just didnt want to spool up fast enough. By the time it produced enough power the plane was brushing the tops of the corn and took out 1 plant to the root. There were 2'' pieces of corn plant scattered around the plane. Thankfully nothing got damaged.
Live and learn.
I had tuned my DLE20 yesterday too. It seems to run ok, but after taxiing about at small throttle inputs, when I went to throttle up it died, twice, in the same spot. Just wondering if the humidity and heat played a art in that.
If the HS needle is correct for good power without overheating and sagging, quitting or stuttering on spool up usually indicates a too lean LS needle.
The upper half of throttle generally controls abt 25-33% of power. For this reason I like to usually set throttle throws with a disparity between up and down with numbers like 100% up and 50% down. Doing so, moves the center stick position to less than center of the servo throw to yield more linear power control.