THUNDER TIGER Titan Raptor 50 Size 3D Heli Assembly & Maintenance Manual page 25

On the left side frame, there are
three pitch scales molded onto
the plastic frame. The three
different scales are designed for
beginner, intermediate or expert
F3C and 3D pilots.
Use the "pointer" on the collective
tray and the plastic molded scales
to set up the initial collective
control.
The actual blade angle in degrees
can be checked using a pitch
gauge (sold seperately).
The total pitch angle range should be at -10˚~ +11˚.
Setting up Main Rotor Blades Pitch Angle
Pointer
24
For Beginners
For Intermediates
For F3C or 3D
Top End Pitch 11˚
Hover 5.5˚
Beginners -2˚
Intermediates -5˚
Bottem End Pitch -10˚