Rotor Prerotation - ELA Aviacion ELA 07 Operator's Handbook Manual

ELA 07-07S PILOT OPERATOR´S HANDBOOK
Increase the throttle to give 3500 rpm. Select "R" then "L" at the ignition
switch, then back to "Both". The maximum drop allowed in rpm is 300, and
the difference between "L" and "R" positions must not exceed 150 rpm.
3. Engine parameters: Confirm engine parameters are ready for takeoff.

4.5 ROTOR PREROTATION

1. Alignment: Runway alignment.
2. Engine: Move the throttle until the engine speed reaches 2200 rpm.
3. Flight position: Hold the stick fully forward and centred with your
right hand. With your left hand, select the "Flight" position for the
pneumatic valve. Wait five seconds for the pneumatic system to fully
charge.
4. Pre-rotation: Push and hold the pre-rotator button on the control stick
with your thumb. This causes the prerotator to engage. You will hear the
prerotator belt making some squeak, wait until the prerotator belt
doesn´t make noise, then increase the engine power slowly and
gradually until reaching 220 rotor rpm.
Before engage the prerotator, check area is clear and consider the
risk that passenger's hair or loose garment can be caught by the
prerotator drive shaft.
For shorter takeoff it is advisable to increase the rotor rpm up to
300 but the stress of the prerotation system will be higher so
don´t do it if it's not necessary.
Start the takeoff with the rotor between 150 - 200 rpm requires a
high skill. It is forbidden to proceed with takeoff operations if the
rotor is under 150 rpm.
Version: V07-04
(Max drop 300, difference 150).
Warning
Caution
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