Wills Wing Sport 2 155, Owner'S Service Manual

Page: 47 / 69

— 41 —
The normal sprog cable length is shown below. Any cable which exceeds this measurement by more
than 3/32" should be replaced.
Sport 2 155: Sprog Wire 25.1" (Rear tang rivet center to center of LE mounting bolt).
There are three hinge mechanisms in each sprog assembly that must be free to swivel. One is the
cable attachment to the leading edge. Make sure the cable can swivel in the horizontal plane at this
attachment. Also make sure that the locknut is fully engaged and secure on the bolt. Second is the
junction of the sprog fork and sprog pillar. This junction should be disassembled, cleaned and lightly
lubricated with white grease. When reassembling, take care not to overtighten the nut, as there should
be no clamping effect of the sprog fork on the pillar. Third is the junction of the pillar and the sprog
bracket attached to the leading edge. Service this junction in the same manner, and again, do not
overtighten the nut.
Ever Year
In addition to the normal six month service items, also perform the following:
1. Remove the sail completely from the frame, and disassemble all frame components. Inspect every
part of the glider for any damage or wear. Inspect the tubes for straightness, dents, cracks, and
for signs of corrosion. Inspect each hole or slot in each tube for elongation, cracks, wear, loose
bushings, or other signs of damage.
2. Anytime you have the sail off the frame, turn the sail inside out through the bottom surface center
zipper and inspect all of the batten pockets and batten pocket terminations.
3. Replace bottom side wires and hang loops. Note: The bottom side wires are retained by a lightly
press fit bushing. This bushing is best removed with a special stepped drift, by pushing it out of the
fitting from the rear. Take care not to damage the fitting.
4. Replace the VG ropes.
5. Remove the transverse battens and inspect for damage.
Special circumstances
1. Any time you suffer a crash or extremely hard landing you should have an “annual” inspection
done on your glider to insure that you find all damaged parts. Following any hard landing, be sure
to inspect the apex hardware, the control bar legs and basetube, and all control bar fittings and
fasteners for damage, including the ball lock pins. Any time you replace a control bar leg or
basetube, you must carefully inspect all related fittings and replace any that are bent or damaged.
Hard landings may also impose very high loads on the sprog assemblies and transverse battens.
Inspect accordingly.
2. If your glider is ever exposed to salt water you will need to have the glider completely disas-
sembled in accordance with the recommended annual inspection procedure. All frame parts will
need to be disassembled, including the removal of all sleeves and bushings, flushed liberally with
fresh water, dried completely, and treated for corrosion inhibition with LPS-3 or other suitable
agent.
3. Cleaning Your Sail - Keeping your sail clean will extend the life of the cloth. When cleaning the
entire sail you should generally use only water and a soft brush. You may clean small spots or