|Name||TDF (Tree Dee Fun)|
|Manufacturing and sales||Henseleit Helicopters|
|Main rotor diameter||up to 1600 mm|
|Rotor blades||680 – 720 mm|
|Recommended rotor blades||710 mm / 175 – 210 g|
|Tail rotor blades||up to 110 mm carbon blades|
|Empty weight of the mechanic||approx 1800 g|
|Total weight – depending on used components||3.6 – 4.8 kg|
|Total length – tip of canopy to end of tail||1390 mm|
|Total height||380 mm|
|Maximum width of skits||190 mm|
|Maximum width of canopy||140 mm|
|Recommended motor|| PYRO 650 – 65 (6S and 7S setup)
PYRO 700 – 52 (for 10S)
PYRO 700 – 45 (for 12S)
Maximum motor PYRO 750 – 45 Competition (for 12S)
|Recommended ESC|| JIVE PRO 80+ HV
JIVE PRO 120+ HV
KOSMIK 160+HV depending on motor and flight syle
|Gear ratio main rotor to tail rotor||1 : 5,56 (tail rotor is running during auto rotation)|
|Gear ratio motor to main rotor||9,27 : 1|
|Maximum flight pack size (L x W x H)|| 340 mm x 60 mm x 62 mm
When using 6S or 7S, the flight pack should be a weight of minimum 800 g.
|Recomended servos and some general things|| In gereral al standard servos can be used, but the TDF can also be flown with mid size servos due to his weight and Linear Drive System, as 80 Ncm torque is more than enough.
Normally these servos are only half in weight of standard ones – so a total saving of about 160 g is possible.
Important is, tha there is no play in the servo and that the are precise in finding and holding their position.
The enormous torque of up to 300 Ncm, the manufacturers are beating each other, I believe in substantial exaggerating. Servos with more than 150 Ncm using in this helicopters are not useful.
Even with 3 mid size servos the swash plate is pushed with nearly 25 kg (2 ½ baskets of water).
Considered that the rotor blade with cyclical pitch and 1800 RPM on the main rotor change from one side to the other about 30 times a second – you can imagine that the forces cannot be as high, as the stud bolts would not stay in the plastic ball link if the force would be as high.