Robart 551RS 85 Degree Main Gear RoboStrut Ready

Tower Stock# LXMRR0  •  Manufacturer Stock# 551RS
Robart 551RS 85 Degree Main Gear RoboStrut Ready (large view)
Regularly Purchased Together
Although customers also purchased these, compatibility is not guaranteed. Click an item for product details.

Notes from our tech department:
This is a set of Robart 85 Non-Rotating Main Retracts for
model airplanes weighing 8-18 pounds.


These are Robostrut ready
Positive UP and DOWN lock and smooth cam action mechanism.
Aluminum housing supports an aluminum pivot bearing.
Retract unit only with NO struts


One 85 Heavy Duty Retract unit right side
One 85 Heavy Duty Retract unit left side
One detailed installation instruction sheet


Air Control Kit (Tubing, Valves, Air Vessel).
Hand pump with gauge, use ROBQ2363.
Wheels, struts.


Retract Unit: Length: 3.69" (93mm) (including air cylinder)
Length: 1.5" (38mm) (mounting plate)
Width: 1.75"
Depth: 1.125"


Optional Quick Connector (ROBQ2395)
(for ease in connecting and disconnecting the lines to the wings)
Optional Air Restrictors (ROBQ2389)
(restricts air flow to the Retract for a realistic movement,
and slows down the Retract Mechanism to scale speed).
A standard servo may be used to operate these Retracts.
Axles are not included (The instructions state how to bend the struts
with heat)

ajw 8/22/06

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