This Advisory only applies if using EFLB312B ESC which does not have a Switch-mode BEC and was orginally recommended. We now recommend purchaisng our EFLA1040 40A Pro.
We have found, during continued flight testing, the possibility of a rx/servo current overload to the BEC in the speed control, causing the motor and radio to shut down in flight. This has typically happened on extreme high temperature days with continuous extreme flight control inputs. Most speed controls on the market today are designed for use with 4 sub-micro servos with relatively low current draw, like the E-flite S75. The newer sub-micro digital servos, as well as most micro and mini servos, have a higher current draw and can cause a BEC to shut down due to high temperatures. In order to provide the most reliable product, E-flite recommends the use of a separate BEC (like the Ultimate BEC), or receiver pack and switch using the following items to ensure trouble-free operation:
Use these items to power the receiver and servos after disabling the BEC on the ESC (by following the instructions included with the ESC).
E-flite does NOT recommend using the speed controller’s BEC in the applications described above.