Helos Aviation Technologies is proud to the be the Sole Distributor in North Americia for Concept Helicopter's Line of Sfour Helicopters!
The Concept Helicopter Sfour Professional Level German & Swiss Engineered and Manufactured Available in Standard ( 1055mm Rotor Dia., 465mm Bladesand a Stretched Version which allows the use of 515 to 520mm blades and available in both Flybar and Flybarless Versions
After much flight testing James Wang recommends the Scorpion HKIII 4020-890 to give 2050 RPM for general flying and the Scorpion HKIII 4020-1100 to give 2500 RPM for Hard 3D.
Will be available with µRondo SAS and other Money Saving CombosLength 995mm ( Standard Length )Weight 2150g --- 4.74 lbs.Main Rotor Dia.
1055mm or 1150 with Stretched option Tail Rotor Dia. 215mmThe Flybar and FBL Sfour kits include the following:Main BladesTail BladesThe Flybar Kit also includes: Motor - 1100KV, Approx. 1000W, 14-Pole, using 4 to 5 Lipos
Best Phase setting for the Standard Motor when setting your ESC is 18 to 25ºIn the Standard configuration as shipped the RPM when using a 4-cell battery is 2061 RPM w/ Flybar Paddles or Flbarless
Check out Flight Videos:
Concept Sfour
