Rans COYOTE II S-6ES, Technical Manual

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013-1
020130em 4/27/06
S-6ES ENGINE MOUNT GENERAL INSTRUCTIONS
1.
Select the proper hardware and components depicted on the parts page.
2.
Assemble the barry mounts and plates as illustrated. Torque these bolts 5 to 7 ft.lbs.
3.
Bolt on the propeller (see engine for correct hardware). NOTE: Some installations have large spinners,
refer to Spinner Installation for details to complete prop attachment. Use 10 ft. lbs. for proper propeller torque.
4.
Check the face of the prop with a protractor and firewall. 0 degrees of down thrust is used on the S-
6ES. Adjust by adding or removing the shims between the engine and mount plates.
5.
Next check the prop tracking by measuring from a reference point on the fuselage to the prop tip. Have
the prop positioned level when measuring. Turn through the prop (ignition off?) and check the other tip. Both
should read the same distance from the reference point. If they don't, try re-torquing the prop bolts until the
prop is in track.
6.
Check for offset by using a reference point on each side of the fuselage such as the strut attachments
on the S-6ES & S-6XL. The right side should measure 1/8" to 1/4" more than the left to add a little left thrust on
503's and 582's . The exact amount can only be determined by flight testing. Add washers between the mount
and firewall on the RH side to adjust. The right amount is when the plane flies straight in level flight at its
normal cruise speed.
Other factors such as wing set (wash out), aileron, flap, and tail rigging will effect the aircraft's ability to fly
straight. Consider these factors when rigging offset. You'll know it's not the engine angle if the offset exceeds
5/8 of an inch.
IMPORTANT: The firewall engine bolts must have (3) threads or more showing after torquing
to be acceptable.
912 DYNAFOCAL ENGINE MOUNT INSTRUCTIONS
1.
The 912 dynafocal engine mount will attach to the firewall in the same manner as previously detailed for
all engine mounts. Refer to the parts drawing and select the hardware to attach the top two mounts to the
firewall. After bolting these in place, use the bushings on the lower two mount points as drill guides and drill the
firewall attach points 1/4", install hardware and torque all (4) bolts to 7 lbs.
2.
Before installing the engine onto the mount, the 912 engine attachments need to be bolted to the
engine. Slide the 3/8" bolt and washer through the bushing before attaching the brackets to the engine with the
10MM bolts. When installing the engine, slide the 3/8" bolts up as far as possible, have the upper rubber
bushing and steel bushing in place, then lower the engine into its approximate location and gently feed the
bolts into place. Install the lower rubber and steel bushing and tighten them in place.
3.
IMPORTANT: Install the “S” shaped radiator hoses to the aft cylinder head coolant fittings. The “S”
hose prevents coolant hose conflict with the engine mount. Install on both right and left aft fittings. Trim hose
as required to prevent binding.
IMPORTANT: Rotate the water pump inlet to the 8 o’clock position.
4.
Shim the left side of the 912 engine mount as shown in the parts drawing. 1/8" to 1/4" is desired at the
left tip of the prop from a reference point on the fuselage. The prop should be horizontal for measurements to
be taken.