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These are the Robart Heavy Duty 635 Series Main Retract Mechanism
20 - 55 lb. Pneumatic Retracts.
These 635 series heavy duty custom pneumatic retracts are designed for
specfic R/C aircraft weighing up to 32 lbs.
Constructed the same as the standard 630 series retracts with heat
treated aluminum alloy frames and trunions, these gears will
accomandate a 1/2" dia. RoboStrut or a custom made 5/8" dia. 4130
alloy steel tubular RoboStruts. Offers long dependable service for
large aircraft flying off grass or paved runways. Powered by a 5/8"
bore triple sealed Robart air cylinder, all of these units feature
positive up and down locks. Easily adjusted for toe-in with the
unique Robart "split-lock" trunion.
One set of 635RS 90 degree pneumatic retracts
Assembly to aircraft
Proper 1/2" dia. RoboStrut to fit aircraft application
Tower Hobbies Has Been Serving Hobbyists Since 1971 • Call 800-637-6050 or 217-398-3636
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