Good morning,
You guys were instrumental in resolving my Motor/Transmission problem a month back, so I thought I would ask you for more help.
I have a 1/48 O class submarine with a 4" OD WTC. The sub works well in the water for 5 to 10 minutes (surfaces and/or submerged) , and then she shuts down, as though it has lost all power. This happens above or below the surface.
I initially though that the problem was related to the internal BEC of my speed control, so I disabled the feature and installed a 5 Volt 1A regulator (model 7805). Same problem. Thinking that the issue could be related to the HITEC Radio I am using, I contacted their support team who confirmed that they have never had receiver problems on this radio model (Laser 6 6ch FM 75mHz Radio).
As a last resort, I installed a new set of 4 Nicad batteries and tried her again. Same problem.
As an FYI, the sub uses 5 Hitec HS-325 servos and an Mtronics 40A speed control.
The maximum amperage draw using all servos/sc at once is just over 1A.
Appreciate your help