Rans S-7S COURIER, Text Manual

Page: 202 / 203

09/05/2008
11D-01
S-7S WARP DRIVE PROP INSTALLATION
(REFER TO PARTS PAGE # 011-10 FOR PARTS SELECTION)
Refer to FIGURES 06-13, 06-14, 06-15 and 11D-01 .
Install the flange bushings into the prop flange on the engine from the aft side.
Use a “C” clamp to completely seat the bushings into the flange if needed. Place
a small wood block between the pad of the clamp and the aluminum bushing to
protect them from being damaged. Use a piece of tubing approximately 1" long
over the flange bushings to allow them to seat as the “C” clamp is tightened. See
FIGURE 06-13 .
Inspect the prop for any nicks, cracks, or dings.
Mount the propeller as per parts drawing and information provided with the prop.
Note the length of the bolts is critical. Use washers to be certain the bolts are not
bottomed out on the threads.
DANGER: If bolts are bottomed out on the
threads, the prop is not properly torqued, separation from the aircraft during
operation may occur.
Adjust the blade angle and torque the 1/4” bolts retaining
the blades to 120 inch-pounds. Torque the 5/16” bolts to 200 inch-pounds in the
pattern shown in
FIGURE 06-14 . NOTE: Check the specifications provided with
the prop for torque updates. Re-torque bolts after 5 hours of flight and thereafter
according to manufacturer’s instructions.
Check prop for tracking by turning blade into a vertical position and placing an
object at the tip. Pull the prop to the next blade and check position. If the position
is the same, the prop is in track. If not, loosen prop bolts and re-torque until
proper tracking is achieved.
HINT: Start torque pattern on the blade that is out of
track. See FIGURE 06-15 .
DANGER: Track prop with ignition OFF!!
Using the template from FIGURE 11D-01 , mark and cut out the openings in the
spinner dome.
Drill and install the spinner dome to the backing plate. Refer to
SECTION 06 –
SPINNER and PROPELLOR INSTALLATION sections.
Best adjustment is normally about 13 degrees at the prop tip. This should yield a
ground static of about 5400 RPM.
Final setting will be determined during flight testing to yield about 5600 RPM in
level flight at full throttle.