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Schleicher Ka8 Manual

Field retrieve guide
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Crown Service Gliding Club
Schleicher Ka8 Field Retrieve Guide
This Guide should be treated only as an aide-memoire—it is no substitute for a
briefing and demonstration. De-rigging and fitting the Ka8 on its trailer is very
straightforward if the correct technique is used but it needs at least four people.
These notes are primarily for use during retrieve operations using the trailer.
De-rigging into a workshop will vary only slightly from this—the essential
processes are similar.
This Guide covers the details special to the CSGC open trailer; further details of
derigging and rigging the glider can be found in the manual—
http://csgc.website/documents/manuals/flight/Ka8 Flight Manual.pdf
Preparation and kit needed
Ensure that the trailer is roadworthy (lights, tyres, number plate, etc.). You may
find the wing trestle and fuselage support useful; if you take them make sure
they are stowed securely (probably in the car). In addition to the usual trailer
checks make sure you have the following before setting off for a retrieve–
Holdall with derigging tools:
spanner for the wing main-pin retaining nuts (22mm);
box spanner for the tailplane retaining bolt (17mm);
copper-faced mallet.
Fuselage stretcher bar (with cables and locking pins),
Aileron locks,
Bungee,
Rudder lock (normally kept on the tailplane holder).
A clean bag (such as a sick-bag!) in which to store the main- and drag-pins.
Ensure tailplane, wing root and fuselage restrainer clamp bolts on the trailer are
free and undamaged.
Procedure
1.
Go to the field!
2.
Leave trailer hooked on the car—this stops the trailer rocking end-to-end; it
evens up heights at each end, but the fuselage will need to be lifted a little
higher.
April 2015
Ka8 retrieve guide
section D.
all in toolbox
on trailer
Page 1

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Summary of Contents for Schleicher Ka8

  • Page 1 This Guide should be treated only as an aide-memoire—it is no substitute for a briefing and demonstration. De-rigging and fitting the Ka8 on its trailer is very straightforward if the correct technique is used but it needs at least four people.
  • Page 2 Remove the pin and washer, disengage the rod from the tab, then replace the pin and washer on the rod, securing them with the safety pin. Tie the rod to the rudder cable to avoid its thrashing about. Page 2 Ka8 retrieve guide April 2015...
  • Page 3 (offside) of the trailer. Close and tighten the clamps. Place the safety pin in the tailplane securing bolt head and replace the bolt securely in its nut in the fuselage. Clamps Elevator horn Fuselage side of trailer April 2015 Ka8 retrieve guide Page 3...
  • Page 4 17. Remove the starboard drag-pin (painted green) and place in the bag. 18. With one person holding the wing tip and one each on the leading and trailing edges at the root, gently disengage the starboard wing from the Page 4 Ka8 retrieve guide April 2015...
  • Page 5 (it could bend the fitting) and fasten the locknut. Locknut Clamp tightened using this lever Clamp on strong part of roots Remember to fasten locknut Wing-root clamps Still to be fitted April 2015 Ka8 retrieve guide Page 5...
  • Page 6 21. With both wings on trailer gently but firmly tighten the clamping screw by reaching through the spare wheel. Tighten just enough to prevent the wings moving vertically but no more: Page 6 Ka8 retrieve guide April 2015...
  • Page 7 22. Fit the aileron locks: 23. Keep the bag with the pins (2 main-pins and 2 drag-pins) somewhere safe and clean. April 2015 Ka8 retrieve guide Page 7...
  • Page 8 24. Lastly the fuselage is lifted onto the trailer. First fit the shackle of the inboard fuselage stretcher bar cable to the eye in the centre of the trailer Page 8 Ka8 retrieve guide April 2015...
  • Page 9 Lift by holding only fixed tubes or the nose skid. The wheel goes in a cradle and the tailskid in its holder. April 2015 Ka8 retrieve guide Page 9...
  • Page 10 ...and the shackle of the outboard cable is secured to the eye on the outside trailer tube. The stabiliser bar cables are then tightened to support the fuselage by tightening the turnbuckles on either side. Do not overtighten. Page 10 Ka8 retrieve guide April 2015...
  • Page 11 27. Attached to the keel of the fuselage near the rear is a small securing plate. This secures to a tensioning device on the bottom of the trailer. Attach and tighten (not too tightly to avoid distorting the fuselage). April 2015 Ka8 retrieve guide Page 11...
  • Page 12 28. Tie up aileron and airbrake connections to stop them thrashing around (using bungee provided): 29. Replace centre-section fairing and canopy, making sure it is locked closed. Close the DV hatch. Page 12 Ka8 retrieve guide April 2015...
  • Page 13 Replace the tools in the holdall together with the bag containing the pins. Stow the holdall in kit-box on trailer. Lock kit-box cover. Stow trestle and fuselage support if you have them. Carry out final ground check for any over-looked items. Finished! (apart from getting home) April 2015 Ka8 retrieve guide Page 13...