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JP Hobby ER-120 Main Struts Full Set with Brakes (Carf Joker 1.6m / Rookie 1.7m)+ Controller (optional)


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JP Hobby

Electric Main Retract ER-120S/CJ
> Model Weight: until 12kg
> Struts diameter: 12mm
> Angle: 2x 90 degrees
> Rotation direction: 2x Inside (jack side)
> Mouting: 2x Low
> Wheels: 2x 65mm (with brakes)

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Must have accessories and options


Data sheet

SerialJP Hobby ER-120 (12kg)
Strut(s) Diameter(s) (mm):12
Wheel(s) axle(s) diameter(s) (mm)5
Weight (gr):504 gr
Max weightUp to 12kg
Rotation angle90°
Rotation directionInside (jack side)
Working voltage (Volts):5 to 8.4v (2s LiPo recommended)
Connection:JP Hobby JST type plug (+/-) for JP Hobby retracts
MaterialAluminium, Rubber

More info

Bicycle full set JP Hobby ER-120S/CJ with brakes and optional sequencer for Carf Joker 1.6m or Rookie 1.7m planes up to 12kg

CNC Machined aluminium articulated and mecanical suspended « scale » electric landing complete gear set including 65mm wheels with brakes system and 2 retracts with your choice of sequencer (optional). For planes up to 12kg.

This set does not include the necessary sequencer for retracts and doors operation. You can choose the type and model of sequencer according to your needs. Either Version 1 (V1 type) keeps the doors opened when the gear is down, or, Version 2 (V2 type) keeps the doors closed when the gear is down. If you place an order without any sequencer, you will receive a module of brakes function with your order.


  • Materials: Aluminium
  • Suspension: mecanical
  • Wheels: ball bearings mounted
  • For planes up to 12kg

Technical Specifications

  • Struts diameter: 12mm
  • Wheel axle diameter: 5mm
  • Main gears wheels diameter: 65mm
  • Weight: 504g (2 struts, 2 retracts, wheels and 2 modules)
  • Dimensions: for detailed dimensions, please refer to the pictures
  • Working voltage: 5-8.4V


  • 2x Scale metal struts for main landing gear equiped with 65mm wheels & brakes system
  • 2x Electric Retracts JP Hobby ER-120 12mm (12kg/Low/Inside)
  • 1x Electronic brake system control module


  • JP Hobby sequencer (option to be selected on this page) Please pay attention that only JP Hobby sequencers are qualify to work in accordance of the JP Hobby products.
  • 2 cells battery (if used with HV sequencer - recommended)


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