Grob Acro II, Rigging Instructions

Page: 4 / 6

Points to Note on De-Rigging:
1. Remove tape from wing roots and tailplane/fin.
2. Remove pitot tube and total energy tube and place in front cockpit (closing the trailer lid
with them still on the fin will damage them and the surrounding gel).
3. Manoeuvre glider onto the belly dolly such that the rear of the dolly aligns with the rear of
the red pattern on the side of the fuselage. Use the tool (located in the trailer tailgate) to
raise the belly dolly to the high position so that the fuselage no longer rests on the
mainwheel.
4. Remove the tailplane and stow it in the ceiling of the trailer.
5. Remove the central pad and undo the side pads on the rear seat. Open the baggage
area floor panel.
6. Disconnect all four controls (2 x ailerons and 2 x airbrakes). Unscrew the nuts on all 4
wing mounts, slide the sleaves outwards so that the clear the pins then rotate them so
that the pins can’t drop back into the sleave grooves.
If you don’t do this the wings will
remain attached regardless of pulling.
7. Remove the wings in any order. Note when sliding the starboard wing into the trailer it
may be necessary to get a couple of helpers to lift the root end slightly to clear the felt
leading edge holder half-way down the trailer. Put the aileron locks on both wings.
8. Slide the fuselage into the trailer, lifting the tail with the double-handled strap to ensure it
goes in without scraping the underside of the fuselage on the trailer floor. Roll the
fuselage forward until the tail wheel drops into its retaining hole then secure with the
strap.
9. Remember that the trailer is an Anschau, not a Cobra, so the roof must be lowered
before the tailgate is lifted. This is because the tailgate engages in the two spigots on the
back of the roof.