Adjusting The Main Rotor Blades; Self-Adhesive Marker Stripes; Checking And Balancing The Main Rotor Blades - ROBBE BLUE ARROW Operating Instructions Manual

Adjusting the swashplate
Caution: disconnect both motor wires from the speed controller to avoid the motor bursting into life unexpectedly, as this could cause in-
jury. At half-throttle (throttle stick central) the servo output arms must be horizontal (parallel to the servo case), and the swashplate should
be in the centre of the collective pitch travel. If the swashplate is not straight, you can use either of the following two options to correct it.
1. Correct the output arm position at the servo: disconnect the battery from the receiver, and switch the radio control system off. Unscrew
the servo output arm and remove it from the servo. Now switch the radio control transmitter on, followed by the receiver . When the
system has initialised itself, fit the output arm on the servo at 90° to the pushrod, and re-tighten the output arm retaining screw.
2. Adjust the linkage, i.e. lengthen or shorten the pushrod between servo and swashplate until the swashplate is straight.
Adjusting the main rotor blades (blade tracking):
The purpose of this adjustment is to avoid imbalance in the main rotor blades, and to set the blade tracking accurately.

Self-adhesive marker stripes

Two self-adhesive stripes of different colour are applied to the rotor blades in order to simplify the adjustment of blade tracking. When
the main rotor is spinning, you can check which blade has to be adjusted by observing the coloured stripes, i.e. the blade to which an
adjustment needs to be made.

Checking and balancing the main rotor blades

Take the two rotor blades and fit one of the blade screws through the mounting holes of both blades. Tighten the nut on the screw to join
the blades. Set the blades parallel to each other (see picture), and use the central screw as the pivot point in order to establish whether
one of the blades is heavier. If the blades remain horizontal,
the blades are evenly balanced. If the blades tip in one direc-
tion, you can apply a strip of adhesive tape to the lighter blade
to make it heavier.
Operating Instructions - BLUE ARROW Trainer CP S-FHSS RTB 2.4 GHz No. S2537
13