Hi Kim,
Thanks for the info. I will try the Governor mode in the near future. It sounds like a good way to get a constant RPM. I seem to have enough "head room" in my system for this to work.
The JMP timer is a very nice unit. At only $30, it delivers a lot of "bang for the buck". I took your earlier advice and did a lot of reseach, and crunched some numbers. ..... It paid off today. I had 7 perfect flights on my Brodak P-40. My goal was to have 5 sec. laps with my 60' (eyelet to eyelet) lines. I set up the JMP timer to run at 82% power for the 1st 2 min. of flight, then to steadily "ramp up" to 92% over the next 5 min. to compensate for the est. power loss from the TP 4200 mAh, 14.8V, 4s2p battery. I used a CF 10x6 prop (an 11x6 will be better, but ground clearance is a problem for now).
Everything worked out perfectly! :-) The full pattern was completed with plenty of power from start to finish. The lap times remained constant throughout the entire flight. I had plenty of power overhead. These were the 1st flights on this plane, so it will need some trim adjustments, but the Elec. system performed flawlessly! :-)
The top flyer in our club, John Wright, flew it. He is used to his .60 size ships with plenty of power, so he always wants "More Power"! He agreed that an 11x6 would be better. He flew his typical "Excellent" pattern with it, and liked flying Electric! He is interested in your power system for his .60 size ships. :-)
I will look into the test equip. you recommended. At $90 it seems like a good investment. I also like Will Moores "On-Board" diagnostic system that gives us real life info. about our systems in flight.
I am looking forward to the next generation of timers with the feed back loop, and true 2/4 break simulation. ....... Who knows, maybe someday we can even turn our motors into generators on the downlines and put some (wind/gravity power) energy back into the batteries? ;-)
Again, thank you for all your help. You, Will, Dean, etc. have all been instrumental in making Electric CL possible for the rest of us. :-)
Rudy