Originally Posted by
Pattern_is_Fun
I'm looking for facts about this problem I'm trying to solve. I'm flying the Masters Pattern with a 50 size plane on a 5S, 25C, 5000ma battery. The flight takes 2500ma (2.5A) +/- 200ma depending on wind. I'd like a bit more 'end of flight' power. If I increased the C rating to a 40C or 50C would this give me the desired more power at the end of the flight? The extra weight and size will be no problem.
Thanks for comments
Scott
(I have placed this in the Battery section also - but wanted to check here too)
I decided to go back to the beginning. Here are some facts:
1) Scott's objective is to have more end of flight power.
2) He has more than enough ENERGY in his battery pack.
3) The reason he wants more power at the end of flight is because battery voltage drops as it is discharged. Lower voltage means lower RPM.
4) The way to solve the problem is to take the battery variability out of the equation.
My experience with packs providing 60 to 70 Amps is that the C rating is insignificant and I believe there is no theory that says it will solve his problem. So my answer is no, going to 40C or 50C will not give him the desired more power.
Because he is not energy limited, the solution is straightforward. Get a motor with a higher Kv that is rated at the desired power or go to a 6 cell pack, and then add a Throttle-Tech to regulate the voltage. He can have more power and have it from the beginning to the end of flight and set it to his desire.
I use Throttle-Techs in all my pattern planes. Make sense?
I suggested to Jeti that they build the TT concept into their ESCs. Got no answer.
Jim O