Avian JAVA COMP 150 Dacron, Owner'S Manual, Page: 23 / 34

Java Comp 150 Owner’s Manual
Other problems with the VB.
The VB. may also be difficult to pull if mud or stones get into the lower casting. Remove the obstruction.
Other problems are unusual but are most easily cured by following the VB. cord until you find an
obstruction.
The wings are difficult to close when de-rigging the glider
If de-rigging on the keel the weight of the wings is transferred to the keel. This stops the cross tube
junction from sliding so easily on the keel so easily when the tension is released. (See above.) The easy
remedy is to unzip the under surface and pull the cross tube junction forwards. The wings can then easily
be moved inwards.
When the tension strop is released it should be pushed towards the keel pocket to feed some slack into it.
This allows the wings to move together more easily. It is possible for the tension strop to get caught. Find
the obstruction and release the tension strop and continue to move the wings inboard.
The glider has a turn
Check for crash damage then see tuning instructions.
The glider has become more difficult to turn
1. This can be caused by an incorrect but symmetrical batten profile. (Asymmetrical battens tend to cause
turns.) The glider handling does deteriorate significantly if battens are out of profile. Check the
battens (don't forget the nose batten) against the profile more regularly.
2. This may also be caused by an incorrect trim position. (The position of the hang loop.) The glider
might be trimmed too slow "hands off" and be flying in a semi-stalled condition. See tuning
instructions.
3. This can also be caused by foreign bodies in the cross tube junction area. Remove.
The glider is heavy or "strange" in pitch
The glider is heavy or handling badly despite the hang point apparently being in the correct position. The
backup hang loop might caught in such a way that it interferes with the main loop when moving the bar (in
or out depending on the position of the backup loop relative to the main loop.) Free the backup loop so that
it is loose at any flying speed. Always fly with a backup loop.
The glider appears to be trimmed too fast despite having the hang loop at its furthest rearward
position
1. If you are new to the glider and have previously flown a glider which has a heavier pitch response you
may actually be pulling the bar in with out realising. On a smooth day, when you have a safe ground
clearance and are clear of all other aircraft, slowly release your grip on the base bar and check the bar
position and trim speed without putting any load on the speed bar.
2. As above this might be caused by a backup loop that is caught and interfering with the main loop when
flying. Free the loop so that you are sure it is loose in flight.
The short under surface batten has been put in the long under surface batten pocket
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