Puma 13.5
Owner’s Manual
To alter the washout height the split ring should be removed from the clevis pin holding the red washout rod
adjuster in the inner end of the washout rod. The red section can then be turned on the gold eyebolt by ¼
turn increments and the clevis pin and split ring replaced. If the eyebolt is screwed out, making the washout
rod longer, then the rod is raised and visa versa. The opposite adjustment should then be carried out to the
corresponding rod on the opposite side of the glider.
Small adjustments like this are permitted provided that the rod height between left and right wing does not
differ by more than 20mm. After adjustment the sail should be pushed down on both sides to take up any
slack and the heights checked again. Make sure all the pins and split rings are replaced before packing the
glider. It is vital that the average height of both the inner washout rods and outer washout rods remain above
the lower limits given in the technical details section. (Lowering the rods below this limit is likely to make
the glider dangerous in pitch stability. DO NOT BE TEMPTED!)
Batten Tension
The tension pulled into the glider by the battens makes a noticeable difference to the handling of the glider.
(See STANDARD BATTEN TENSIONS page 33 for the factory set-up of batten tensions.) Asymmetry of
the tension particularly at the tip battens will result in a turn in the glider. (e.g. If the No 10 compression
strut is tighter on the right wing the glider will turn to the left.)
The Avian clip batten system was designed to give easy rigging and easy adjustment with maximum sail life.
However it should be noted that due to the easy over-centre nature of the clip it is possible to get extremely
high tensions in the battens. This should be avoided as it gives not advantage and is likely to cause sail
damage. Also note that a ‘tension’ of 2mm on a short batten is greater than one of 2mm on a long batten.
To check the batten tension the glider should be fully rigged with the VG on full.
Each batten is unclipped in turn to check the tension. The batten end should be re-clipped below the sail and
then viewed from above the check the tension. It is best to work symmetrically. I.e. get the tension the same
in both left and right batten number 1 then move to batten number 2 etc. To adjust the tension unclip the
batten and rotate one full turn. One turn alters the tension by 1mm.
When you have the glider flying perfectly mark the battens at the end of the clip ends with an indelible pen.
Thus the batten tensions can easily be returned to standard should the tension on one become inadvertently
adjusted.
Other tuning should NOT be carried out without reference to Avian Ltd., or an approved dealer.
Puma 13.5 hand book-Rev-02
20
Summary of Contents for PUMA 13.5
Page 1: ...PUMA 13 5...
Page 21: ...Puma 13 5 Owner s Manual Figure 4 Checking batten tension Puma 13 5 hand book Rev 02 21...
Page 38: ...Puma 13 5 Owner s Manual Section 3 Assembly Drawings Puma 13 5 hand book Rev 02 38...
Page 39: ...Puma 13 5 Owner s Manual NOSE ASSEMBLY Figure 10 Nose assembly Puma 13 5 hand book Rev 02 39...
