Java Comp 150
Owner’s Manual
Movement in the opposite direction will have the opposite effect. However it should be emphasised that
large movements are not beneficial.
To check the washout at the tips. The glider should be flown clear of the ground and all other aircraft with
the VB. on. The under surface at the extreme tip of the sail should be just tight.
Batten Bungees
The tension of these bungees does make a difference to the handling of the glider. (See Appendix for
batten numbering system.)
Battens number 1 and 2 can be relatively tight.
Batten number 9 can be relatively tight but increasing tightness reduces handling.
The compression strut should be tighter but increasing tightness reduces handling.
The rest should be of medium to light tension.
Other tuning should NOT be carried out without reference to Avian Ltd., or an approved dealer.
Washout
This is factory set and should not be altered by the pilot. It can be checked with reference to the appendix.
The batten profile should be checked then the glider should be rigged on a very flat surface without the
speed bar. With the glider tensioned but the VB fully off the heights can then be measured from the top of
the battens. The heights of the rods alone are for measurement without the sail. Damage to the leading
edge can alter washout heights. If your washout heights are below those specified the glider should not be
flown.
BATTENS AND BATTEN PROFILE
The Java Comp battens should be maintained in the correct profile. Failure to do this could result in
adverse flying characteristics.
Batten Material
The nose batten and compression struts are made from 1/2" OD 6082 aluminium alloy tubing.
All other battens are made from 10.8mm OD 7075 aluminium alloy tubing.
6082 Alloy tubing is softer and easier to bend. 7075 alloy is harder, more difficult to bend and more
brittle but it holds its shape much better.
How often should your battens be checked?
At first check your battens regularly. This will give you some idea of how fast they are changing profile.
The Java Comp has 7075 battens which tend to hold their shape well. The nose and tip battens are made of
a softer 6082 alloy. 6082 battens tend to get harder, and hold their shape better, once they have been re-
profiled a few times. On the Java Comp the batten most likely to require re-profiling is the nose batten.
Don't forget: If you don't know how the glider has been treated while it is out of your care (for instance if it
has been sent by carrier or on an aeroplane) check the battens against the profile and do a very thorough
pre-flight check
BEFORE
flying.
Checking the profile
15
Summary of Contents for JAVA COMP 150 Dacron
Page 27: ...Java Comp 150 Owner s Manual Appendix ASSEMBLY DRAWINGS NOSE ASSEMBLY 27...
Page 28: ...Java Comp 150 Owner s Manual 28...
Page 29: ...Java Comp 150 Owner s Manual CROSS TUBE LEADING EDGE JUNCTION 29...
Page 30: ...Java Comp 150 Owner s Manual 30...
Page 32: ...Java Comp 150 Owner s Manual VARIABLE BILLOW VB OR VARIABLE GEOMETRY VG 32...
Page 33: ...Java Comp 150 Owner s Manual Appendix CHECKING WASHOUT GLIDER MINIMUM REQUIREMENTS 33...
