Heli-Professional REVOLUTION 500E, Manual

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Preparing the Maiden Flight
Although the helicopter was mounted, adjusted and tested ex works, it is necessary to check the following functions.
·
Check the tail drive belt tension: It is sufficiently tense when you can push it down max. 5 mm in the tail rotor
housing with normal force. Check the tension regularly. Tensing the tail drive belt: Loosen both M3x20 mm bolts
of the tail boom housing in the frame. Loosen the M3x35 mm bolt of the stabilizer fin. Tense the tail drive belt by
pulling the tail boom backwards. Level the tail boom exactly horizontally and tighten all bolts again. A too loose
or too tense tail drive belt can wear out quickly or can even jump out of its guidance (failure of the tail rotor).
·
Check the fastenings of all electronical parts and the wiring. Cables must not come in contact with rotating parts.
·
Check the main and tail rotor blades for firm seating. Tighten the blades until they can only be moved with a lot
of force.
·
Check all bolts for firm seating. Tighten loose bolts if necessary.
·
All bolts must always be secured with thread lock!.
You are finally ready for the maiden flight with your new Revolution 500E RTF.
Adjusting the Rotor Blade Tracking
Although the rotor blade tracking was adjusted ex works, it is absolutely necessary to check it during the maiden flight
and on a regular basis afterwards. In addition, you must adjust the rotor blade tracking after every crash. If the main
blades are running out of track, vibrations, loss of power and instability will be the result. Hence, adjusting the rotor
blade tracking is a crucial process and should be done with special diligence.
Attention: Adjusting the rotor blade tracking is executed with rotating blades. Always keep a safety distance of at
least 10 m between you and the model.
1. Switch the model on and bring the rotor blades to hovering speed. If both blades are running at one level, no
further adjustments will be necessary.
2. If you see two rotor blade levels (as in the illustration below), adjustments will be necessary.
3. Switch the model off and wait until the blades stop to rotate. Mark one rotor blade with thin, colored duct tape
or a clearly visible, colored pen.
4. Switch the model on again and bring the rotor blades to a hovering speed. You can either check the rotor blade
tracking on the ground or in the air at approximately eye level. It is useful to have an assistant who eyeballs the
rotor blade tracking. By targeting the marked rotor blade, you can easily spot whether the rotor blade is running
out of track upwards or downwards.
5. Bring the rotor blades to a standstill.
6. A: The rotor blade, which runs out of track upwards, has too much pitch. This means that you have to shorten
the pitch linkage rod between the blade holder and the swash plate by screwing in one ball link for one full rota-
tion.
Never screw in the ball link for only half a rotation!
7. B: The rotor blade, which runs out of track downwards, has not enough pitch. This means you have to lengthen
the pitch linkage rod between the blade holder and the swash plate by unscrewing one ball link for one full rota-
tion.
Never unscrew the ball link for only half a rotation!
Change the lengths of the linkage rods only on one rotor blade at a time and check the rotor blade tracking
again.
8. Repeat this procedure until the rotor blade tracking is adjusted almost perfectly. Minimal deviations do not com-
promise the flight characteristics.