AircraftBoatsEngines / E-MotorsElectronicsMulti-Mos mcHand-Launch-Glider
Product pictures

Multi-Mos mc

Smaller, better performance and easy to program: those were the goals we set ourselves in developing this new generation of “aero-naut” speed controls. The Multi series is designed for ground-based models, and therefore features reverse mode as well as forward.

Most speed controls produce an annoying whistle from the motor, but this is not audible with these units as the pulse frequency is so high at 16 kHz. This new generation of speed controls exploits digital techniques and incorporates the latest micro-controller technology. Programmed data is stored permanently in an E²prom until and unless the settings are changed. All the operator has to “tell” the speed control is the neutral position, full-throttle position and battery type (NiCd, NiMH or lead-acid). A jumper is used to select the EMF brake function: when set to free-wheel mode the motor is not braked at the neutral setting; the proportional EMF brake only slows the model if the stick is moved beyond the zero point in the opposite direction of travel. LEDs can be connected to the speed control, in which case they operate as brake lights in this mode. Reversing the direction of running is only possible once the motor has stopped. In motor brake mode the motor is slowed normally as with an active EMF brake. In this mode it is possible to reverse the direction of running at any time.


Specification
controler Multi 25 Multi 40 Truck (Plus) Multi 40 Multi 75 Navy
Order no. 7019/71 7019/73 7019/72 7019/76
No. of cells 6 - 18 6 - 18 16-32 6 - 18
Continuous current [A] 25 40 40 75
Continuous current [A], reverse 25 25 20 25
Max. current [A], 5 sec. 50 80 80 100
Unlimited part-throttle operation yes yes yes yes
Direction, forward-stop-reverse f/s/r f/s/r f/s/r f/s/r
Reverse only after motor stop yes yes yes yes
Current limiting yes yes yes yes
BEC / opto-coupler BEC BEC Optokoppler BEC
Max. BEC load [A] 1,5 1,5 - 1,5
Max. number of servos (according to cell count) 4 4 - 4
BEC overload guard yes yes - yes
EMF brake on/off yes yes yes yes
Proportional EMF brake yes yes yes yes
Output for brake light LED yes yes yes -
Output for reverse light yes yes yes -
Pulse frequency [kHz] 16 16 16 16
Power-on pulse suppression yes yes yes yes
Overheating cut-off yes yes yes yes
- to re-activate: stop, allow to cool yes yes yes yes
Low-voltage cut-off yes yes yes yes
- based on automatic cell countg yes yes yes yes
- proportional throttle reduction yes yes yes yes
- initial current by-pass yes yes yes yes
Input signal check yes yes yes yes
Programmable stick travels yes yes yes yes
Weight excl./incl. cables [g] 27/42 30/45 30/45 30/45
Dimensions [mm] 25x40x15 25x40x15 25x40x15 25x40x15
Power-On/Off reset: when switched on and off, when battery is connected yes yes yes yes
LED for error indication + programming yes yes yes yes