SXT MAIN ROTOR HEAD SYSTEM
FOR ALIGN TREX 700/800 SERIES HELICOPTERS
Item Number: AT700-SXTS
Installation Diagram: CLICK HERE
Material: Aluminum 6061-T6, Stainless Steel 416
Models: all ALIGN TREX 700, 700N, and 800 series. Also compatible with other 700/800-class
helicopters with 12.0 mm O.D. main drive shafts (see Design Notice below for additional required
components as needed).
See the Design Geometry Diagram for comparisons to the XTS and MRHFB Flybarless Systems.
Need Replacement or Extra Heavy-Duty Ball Links? CLICK HERE (AT550/600/700-XTSRK)
Note: the new KDE Direct 700/800 Series SXT Main Rotor Head System provides the most innovative and engineered
control mechanics to install confidence in any flying style. Every detail was scrutinized and continually reviewed to provide
the ultimate system for Flybarless flight control, providing the latest technology for fast-response and smooth flight
characteristics tailored to your own flying style.
The system includes: (1) a strengthened housing design (no more wear from extreme-flying styles and larger 800-class
helicopters), (2) optimized main rotor grip arms for Flybarless control, (3) innovative clamping mechanism signature to all
KDE Direct head designs, (4) custom heavy-duty ball links for high strength and durability, and (5) true turnbuckle control
links (clockwise and counter-clockwise M3 threaded) for precision adjustment and perfect blade tracking capability.
- Two (2) TREX 700/800 Series Stainless Steel Main Rotor Grip Control Links, SXT Version
- Two (2) KDE Direct 700/800 Series Hexagonal Turnbuckles, Heavy-Duty 3mm (Stainless Steel 416)
- Six (6) KDE Direct 550/600/700/800 Series Ball Links, Heavy-Duty 4.95mm
- Two (2) TREX 700/800 Series Aluminum Main Rotor Holder Arms, SXT Version
- Two (2) KDE Direct 550/600/700/800 Series Control Linkage Balls, SXT (Stainless Steel 416)
- Four (4) M3 x 0.5 x 6 mm Socket Head Cap Screws (Class 12.9 BP Alloy Steel)
- One (1) TREX 700/800 Series Aluminum Flybarless Main Rotor Housing, SXT Version
- One (1) M4 x 0.7 x 18 mm Button Head Socket Head Cap Screw (Class 12.9 BP Alloy Steel)
- Four (4) M3 x 0.5 x 16 mm Socket Head Cap Screws (Class 12.9 BP Alloy Steel)
Full Page Descriptions:
KDE DIRECT TREX 700/800 Series Stainless Steel Main Rotor Grip Control Links, SXT Version
KDE DIRECT TREX 700/800 Series Aluminum Main Rotor Holder Arms, SXT Version
KDE DIRECT TREX 700/800 Series Aluminum Flybarless Main Rotor Housing, SXT Version
Clear anodize, mirror-polish CNC gloss
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Design Notice: to achieve the best possible setup and perfect alignment of the flight mechanics, it is
recommended to use the following ALIGN Flybarless components with the new design:
*Main Shaft: H70093 or H80H001XX, TREX 700/800 DFC Main Shafts
Dampers: HN7024, TREX 700 Head Damper
Flybarless Grips: HN7116, TREX 700 Newly Main Rotor Holder
Washout Arms: HN7124, TREX 700FL Control Arm Set
Swashplate: HN7017QF, TREX 700FL CCPM Metal Swashplate
*When using the 800 DFC Main Shaft, the washout arms will not be perpendicular to the main shaft at zero pitch (due to
the 10 mm longer length of the shaft in comparison to the 700 DFC version). This does not affect flight performance or
durability in any manner, as the washout arms are solely used for swashplate phase alignment in Flybarless setups.