HDM's Trailer and Derigging Instructions

HDM's trailer
HDM's trailer in the trailer park.
De-Rigging Steps For LS6-b ÒHDMÓ

These de-rigging steps are to assist with HDM being put in its
trailer without damage. Following these steps should mean that it
will able to fly the next day (and there shouldnÕt be damage or
losses to be paid for).

TRAILER PREPARATION
1. With the trailer still on the carÕs towbar unscrew (remove) the
large red handled locating bolt under the front of the trailer.
Partially raise the front of the trailer by winding the jack handle.
Open tail-fin door. Lower rear door (tail-gate). Jack-up front of
trailer until the bracket on the rear door encounters the ground.
2. Remove tailplane stand and lay down on LHS of trailer (stand will
go under left wing for de-rigging).
3. Unscrew clamp on rear door ramp (store safely) and fold ramp out.
Adjust height of ramp jack so that ramp just lifts off rear door.
4. Roll out fuselage cradle onto rear door ramp. Fold in the
cradle-stop on LHS of rear door ramp to locate cradle (if not done
it will be difficult to position fuselage correctly in cradle).
5. Remove wing root dollies from trailer. Sit on each side of rear
door with locating pins inserted in square tubes.
6. Remove (30 mm diameter) taped plastic tube pair (for storage of
main pins) from box in front of trailer and place in cockpit in
readiness for removal of wings.
7. If necessary, remove tail-fin bracket in fin box and store bracket
pointing forward in right post with yellow paint pointing to rear of
trailer. Store both pins securely.
8. If necessary, unclip wing-tip clamps on each side of trailer and
lift to top of square tubes and reclip pointing to rear (so as not to
be in the way as the wing is rolled in).

COCKPIT AREA
9. Remove battery and store in safe place.
10. Undo both water ballast plastic nuts in front of spar roots.
11. Disconnect the four flaperon and dive brake couplings behind the
spar roots:
a. wind cylindrical sleeve away from snap coupling,
b. depress snap slide and lift coupling away from ball.
12. Remove plastic tape from wing-fuselage joints. Use old tape to
tape down each dive-brake so it wonÕt vibrate out during trailering.

DISMANTLING OF GLIDER
13. Line-up fuselage with cradle. Pull fuselage into cradle so that
the back edge of the cradle is in-line with the middle of the blue
sloping trim lines on the fuselage.
14. Put tailplane stand under left wing about 3 m in from tip to act
as wing stand.
15. Wind-up rear door ramp jack so that main wheel is clear of the
ground. Retract under-carriage.

Tail
16. Remove upper total energy tube from tail-fin and store in cockpit
(IMPORTANT - otherwise tube will be bent when fuselage is rolled into
trailer - EXPENSIVE!).
17. Remove sealing tape from fin-tailplane joint and then remove
tailplane:
a. Through access hole in top surface of tailplane use a 10¢ piece to
carefully wind the large slotted nut towards left-hand tip. At the
same time gently rock tailplane tip forwards and back to break grip
of tailplane tapered mounts (IMPORTANT - otherwise unwinding of
slotted nut can damage itself - DANGEROUS and INCONVENIENT!),
b. Lift tailplane up at front and lift away towards rudder.
18. Store tailplane in tailplane stand (should be under left-wing by
now).

Right Wing
19. With the tailplane stand under the left wing, pull out the two
main pins and store in taped plastic tube pair.
20. Remove right wing and attach to wing-root dolly. Roll wing into
trailer and, when fully in, lower onto leading edge support half way
along trailer.
21. Through front door of trailer, check that locating bolt of
wing-root dolley is through trailer bracket. Insert safety pin (on
chain) through locating bolt hole and secure with over-centre ring.
22. Back at rear of trailer, clip wing-tip clamp over trailing edge
of wing-tip.

Left Wing
23. After removing tailplane stand, repeat steps 20 - 22 for left
wing.

FUSELAGE & TAILPLANE STAND
24. Feed cord through spar root opening in fuselage and clip to
cradle leg.
25. IMPORTANT: check upper pitot tube in tail-fin has been
removed (see 16).
26. Secure canopy. Fold out cradle stop on LHS of of rear door ramp.
Lift tail and roll fuselage into trailer.
27. Fit tailplane bracket over tail-fin in fin box (matching the
yellow colours) and insert and secure both safety pins.
28. Slide tailplane stand into trailer on RHS of fuselage ensuring
it engages both securing pins on floor.
29. Before folding rear door ramp back onto the door, make sure the
ramp jack is wound fully down (IMPORTANT - otherwise the jack could
damage the rudder when the rear door is closed - EXPENSIVE!).
30. Lift and clip rear door. Close and lock fin box door. At front
of trailer wind jack down. Screw in and tighten red handled locating
bolt. Finally, lock front door.
31. LOOK AROUND. HAS ANYTHING BEEN LEFT ON TOP OF TRAILER, OR ON
THE GROUND?


							Robert Dorning
							January 6, 2007