766 Flybarless Torque Tube Electric Helicopter Kit by Synergy

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This is the Synergy 766 Flybarless Torque Tube Electric Helicopter Kit. Countless development and design hours have been invested to bring the rc heli community a versatile and flexible machine. Lightweight and capable of running 716, 766 or 806mm blades, the 766 provides an upgrade path for pilots venturing into 776 and 806 class without the expense of 14S electronics. Innovative features include the dual main shaft thrust bearings, tune-able head dampening, and an adjustable battery tray system for quick CG tuning.



  • Machined helical mod 1.0 main and auto gears
  • Monster-mod 1.25 24T front and rear TT gears
  • Torque tube tail drive for high efficiency
  • Ultra-wide head system for rigid, precise control
  • Tunable blade grip pitch arm geometry
  • 12mm Main Shaft / 10mm Spindle with rocker support
  • Dual main shaft thrust bearings
  • Serviceable dual-bearing swash plate system
  • Quad progressive and adjustable head dampening
  • Turnbuckle linkage adjustments
  • Low disk loading
  • Multiple tail drive ratios
  • 6mm and 8mm pinions available
  • Locking battery tray with CG adjustment
  • Optimized tail arm geometry
  • Optimum boom sizes options for each blade size
  • Triple panel canopy system with high visibility paint
  • Grease ports for all 6 thrust bearings
  • Delrin gears, links, and components throughout
  • Designed and supported in the U.S.

Main Blades:
Main Gear Ratio: 9.27-11.58
Tail Gear Ratios: 4.5 / 4.7 / 5.1
Boom sizes: 716 / 766 / 806
Tail blades: 106-116mm
Battery Configuration: 12s-14s
Frame width: 64mm

This product was added to our catalog on February 12, 2016.

Verified Owner
Monday, Mar 7 2016 (7 months ago)
Synergy 766 Flybarless Torque Tube Electric Helicopter Kit
So, after building and flying my 766, here's a honest review. Truly impressive when you open the box. The head and main gear are huge. Lots of great features like thrust main bearings and grease ports for all the thrust bearings. I'm not a fan of the online manual. One thing that I must give a hit for is the battery tray. This is the only cheesy part of the kit. It uses a spring loaded pin inside the frames at the rear for adjustable CG. The tray is tight and a bit of a pain to reach inside the frames. You can cut your self pulling the tray out. Trust me, I know. Other then that a terrific flying 750 class at a reasonable price. My maiden felt like I've been flying it for years. It felt very familiar and comfortable.