Rans Inc.
Section 6
Model S-7LS COURIER
Normal Procedures
Original Issue
March 3, 2005
6- 13
When taxing in strong crosswinds a little extra throttle will help the aircraft turn due to the
increased airflow over the rudder. Caution should be used not to use excessive throttle,
sudden throttle movements or excessive braking.
The S-7LS is equipped with a steerable full swivel tail wheel.
To taxi very small radius turns, push the desired rudder pedal and the brake pedal in the
same direction. This will disengage the steering cam and will allow the tail wheel to
swivel 360 degree. To reengage use opposite rudder and brake to stop turn and roll a
few feet straight forward.
BEFORE TAKEOFF
Warm the engine up.
Be careful about parking and taxing with tailwinds as this can reduce the airflow over the
radiator causing the engine to overheat.
Select an area that is clear of persons and property that could be adversely affected by
the propeller and propeller blast. The area should be free of debris that could damage
the propeller. If you are operating around other aircraft, ensure you are clear of runway
and taxiway areas.
Move the control stick and rudder pedals to full deflection in all directions. Ensure that
they move freely. Inspect all flight control surfaces and ensure that they respond in the
correct corresponding directions to the control stick and rudder pedal movements.
The ignition system or "mag" check should be made by running the engine up to 4000 to
4500 RPM as follows. Turn the ignition switch first to the "R" position and note the RPM.
Next move the switch back to "BOTH" to clear the other set of plugs. Then move the
switch to the "L" position, note the RPM then return the switch to the "BOTH" position.
You should observe a slight drop (approximately 100 RPM) in RPM but NO MORE than
300 RPM for either the "L" or "R" position or a differential of 120 RPM between
Magnetos. The flaps should be moved from FULL UP to FULL DOWN, stopping at each
flap setting. Ensure that the flap selector handle seats securely at each setting and
visually verify that each flap moves to the correct corresponding position. Set the trim
Indicator to middle position.
TAKEOFF
Power Check and Takeoff Roll
Prior to commencing the takeoff roll, align the aircraft in the intended direction of takeoff
and allow it to roll forward a few feet to straighten tail wheel and to assure the steer-cam
is engaged -before applying full power. This prevents possible harmful side-loading of
the tail wheel. When full power is applied, immediately verify that proper takeoff thrust is
created. Also feel for any abnormal vibrations and listen for any abnormal noises.
Note:
The hard rubber tail wheel will transmit some noises in the cabin.
If you suspect
any problem at all, discontinue the takeoff run.