Robart 600 90° mechanical retractable landing gear for RC airplane .15 to .40

Robart 600 90° Mechanical Retractable Landing Gear for RC Airplane

The Robart 600 mechanical retractable landing gear is a set of two main gear designed for small to medium-sized radio-controlled airplanes powered by .15 to .40 engines. Its compact and sturdy design allows for equipping an RC model with a retractable landing gear that operates directly with a control servo. The Robart 600 features a 90° retract mechanism, suitable for models where the landing gear legs need to pivot in the wing to retract. This system is particularly suitable for traditionally built RC airplanes or models requiring retractable main gear without pneumatic installation.

Robart 90° Mechanical Retractable Landing Gear

The Robart 600 operates mechanically: the landing gear retraction and extension are controlled by a standard or mini servo with sufficient power. Robart recommends a servo with over 48 oz-in of torque, approximately 3.46 kg·cm. The mechanism includes positive locks in the retracted and extended positions. Once the gear reaches the stop, the lock limits the forces transmitted to the servo during taxiing and landing. The operation is based on a cam mechanism designed to ensure smooth retraction and reliable locking. This design results in an easy-to-install retractable landing gear that does not require a compressed air tank or pneumatic valve.

Robust Construction with Reinforced Nylon

The Robart 600 chassis is made of fiberglass-reinforced nylon, a material that provides a lightweight and sufficiently rigid mechanism for the intended models. The landing gear legs are made of 1/8-inch hardened steel wire, approximately 3.2 mm in diameter. They can be adapted to the model's geometry based on the required length. The set weighs only 2.7 oz per pair, approximately 77 g, minimizing the impact of the landing gear on the total model weight.

For RC Airplanes up to 2.3 kg

Robart recommends the 600 for models weighing up to 5 lb, approximately 2.27 kg. It is suitable for many RC airplanes powered by .15 to .40 glow engines, as well as electric models of comparable size. Its lightweight and mechanical operation make it a suitable solution for hobbyists seeking a compact RC retractable landing gear without the constraints of a pneumatic system. The 600 model is particularly suitable for sport planes, scale models, and recreational models with a structure that can accommodate a 90° main gear mechanism.

Robart 600 Features

Main mechanical retractable landing gear Robart 600 Reference Set of 2 mechanisms 90° retraction For RC airplanes powered by .15 to .40 engines Maximum model weight: 5 lb / approximately 2.27 kg Construction with fiberglass-reinforced nylon Hardened steel legs Wire diameter: 1/8" / approximately 3.2 mm Positive lock in retracted and extended positions Operates with servo Recommended servo torque: over 48 oz-in / approximately 3.46 kg·cm Weight: 2.7 oz / approximately 77 g per pair Servo not included Main gear suitable for small to medium-sized RC airplanes Operation without pneumatic system