Hello Joseph,
Congratulations!
I have used Cobra 3515/18 last year flying another full size (59-60" span and 64.5 oz. RTF weight ) plane and, unfortunately, I have burned this motor. To this day I do not know why because I did not push it to its limits (36 Amps. continuous). I was and I am using Igor's active timer, Spin66 ESC, 6s 2800 mAh. Thunder Power batteries and Igor's 12x5x3 narrow carbon composite props.
I wonder if you are willing to share some technical details regarding your setup. If yes, please answer the following questions:
What is the RTF weight and the wings total area (with flaps) of your newest plane? What prop. are you using? What are the launch RPM? What is the 6S battery drain after the pattern? What is the lap time and the lines length eye-to-eye? Are you using the active timer boost and, if yes, what sensitivity are you using?
I have another, almost new, Cobra 3515/18 but after burning the first one I was reluctant to use it in my newest plane (attached). This plane will be powered by either Plettenberg 15-22 with the cooling fan or MVVS 8.0 or Cobra C-3520/14 and 6S 2800 mAh. Thunder Power batteries.
Happy Flying,
Matt