Retract unit "JK" with programming adapter, universal connector, SM # 1000"
As of April 2026 · Prices incl. VAT unless stated otherwise.
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Delivery time Germany: 1-3 business days.
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Free shipping on orders over 129 EUR (within Germany, excluding product-dependent surcharges!)
Retract unit "JK" with programming adapter, universal connector, SM # 1000"
"JK" Retract Engine Control with Programming Adapter, Uni Connection SM # 1000
For the fully automatic control of electric retract engines in large gliders.
Version for engines of the type Köllner / Braekler and similar.
A three-position switch on the transmitter controls the entire retract engine with three servos (1x engine arm and 2x cover flap) plus speed controller and tow release servo via a single receiver channel! Three additional limit switches prevent malfunctions even if, for example, a servo or the mechanism is defective. All servo values are programmed with the included programming adapter and permanently stored in the non-volatile memory of the processor.
An extension process proceeds as follows:
- Three-position switch on the transmitter forward
- the engine's cover flaps open, the engine arm slowly extends
- the engine's cover flaps close again
- the motor slowly accelerates to full throttle
The retraction process is analogous:
- Three-position switch on the transmitter back
- the motor slowly decelerates, the engine's cover flaps open
- the engine arm slowly retracts
- the engine's cover flaps close again
For the entire process, you only need to flip a single switch on the transmitter!
This makes a retract engine as simple as a direct drive in the fuselage nose!
- Control of 5 servos
- Safety circuits with limit switches prevent errors
- only one receiver channel required
- simple programming
- also controls a tow release
- high-quality, extra-long receiver connection cable
- stress-free retract engine operation
- prepared for software updates
Scope of delivery:
- Main electronics for controlling 5 servos
- Limit switch set pre-connected
- Programming adapter
- detailed color instruction manual
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