Compass Model Chronos 700 Flybarless Helicopter Kit w/CF Blades

Compass Model
This item is discontinued and no longer available for purchase. You may want to search our site for a similar item.

This is the Compass Chronos 700 Flybarless Helicopter Kit. This 700 sized helicopter is the evolution of 7HV Ultimate and also has some features that are very unique.

Most notably, the Chronos uses the CRS* rotor head which features a completely updated design over previous systems. The hardness of the head damping is infinitely adjustable. This allows the Chronos to get optimized to all the different flybarless system and on each flying style.

In addition to the hardness adjustment, the CRS rotor head eliminates a big part of angular errors by using an updated geometry. Tracking errors at high cyclic deflections are reduced and the helicopter gains precision. Exactly parallel linkages between the swash plate and blade holder and angled linkages between the servos and the swash plate are to thank.

The Chronos also uses the same indestructible main gear made from Delrin. With 127 teeth, the gear is CNC machined in module 1 pitch. This ensures quiet operation and an effective load transfer.

The Chronos frame is very easy to maintain. It features bushings and mounting points for the cables and is designed in two parts. This makes repairs very cost effective in the unfortunate event of a crash, as well as make repairs easy to fix. The automatic belt tensioner, and the perfect working tail rotor of the 7HV Ultimate is used in the Chronos as well. A hollow-drilled 14mm main rotor shaft and a 10mm spindle make the Chronos incredibly stiff and again giving a noticeable gain in precision. The CF landing gear saves weight and offers a great optics. Of course, the plastic struts can still be used.

Whether your style is hardcore 3D or soft low head speed cruising, the Chronos is perfectly adapted for all circumstances and pilots. 
*CRS (Compass-Rotorhead-System) High precision rotor head geometry


  • Automatic belt tensioner
  • Sliding battery tray
  • Mod 1.0 Gears
  • Optimized for flybarless
  • High center of gravity
  • Updated CRS rotorhead design
  • increased stability with CF stiffeners & 14mm mainshaft

Width: 213mm (170mm)
Gear Ratio (13T):
Take Off Weight with Battery:
4800 - 5800g
Motor specs:
brussless outrunner - shaft length: 34mm (33mm is possible too) 400 to 600kV
Rotor Blades:
685 - 710mm
Rotor Diameter:
1570mm (with 700mm rotor blades)
Battery Capacity (12S):
4500 - 6000 mAh*
Battery Capacity (14S:
4000 - 5000 mAh*
25 - 60C
Maximum Headspeed:
Maximum Collective Pitch:
+/- 13***
Electronic Speed Controller:
min. 120A HV****
Teeth Count (Main gear):
Drill Size Motor Pinion:
= The weight of the battery should be about 1350 - 2000g!
= The helicopter is able to hold higher headspeeds. The manufacturer limited the headspeed for safety reasons.
The maximum allowed headspeed is 2200 rounds per minute!
= For safety reasons and for long lifetime the maximum allowed collectiv pitch is +/- 13!
= Minimum continous current is 120A. We recommend to use a 120-200A ESC!

Needed to Complete:

  • Helicopter Transmitter & Receiver 
  • (3) Cyclic Servos
  • (1) Tail Servo
  • 700 Class Helicopter ESC & Motor
  • (2) 6S 4000-6000mAh LiPo Batteries & Charger
  • Flybarless Control Unit

This product was added to our catalog on September 3, 2015.