Cheetah 160
Owner’s Manual
Appendix
GLIDER OPTIONS
Rear Mounted Top of Uprights
If you generally fly in light wind conditions and do not need the facility to rig your glider flat an
alternative position of the top of the uprights is possible.
The top of uprights is moved back 3". This prevents easy flat rigging but improves the static balance of
the glider. It also makes nil wind landing easier; the uprights are nearer to the pilot giving greater flare
authority.
To change the position of the uprights a new set of rear rigging is required to maintain the same tension in
the lower front to back wires.
Thin Lower Rigging For Competition Gliders Only
.
Rigging Cables: Thinner 1 * 19 none plastic covered wires.
These wires are slightly thinner than standard and their use is recommended only for competition flying.
The main problem with these rigging wire lies in the fact that they are less flexible than 7*7 wires and
need replacing much more frequently. In addition, without a protective plastic coating, it is highly
recommended that a pilot using these wires flies with suitable face protection (i.e. Full Face helmet) and
gloves. Gloves may also be required for ground handling.
Strength and Life
This galvanised steel wire rope is theoretically the same strength as normal the normal rigging used.
However Avian's testing suggests that, when made into rigging, the resulting cables are not as strong, even
when brand new. Thus it is even very important that kinked cables should be replaced immediately. Once
a cable has a kink the strands are damaged and replacement is the only cure. Before every flight check for
cable damage along the entire wire length. The most likely failure area lies immediately adjacent to the
swaged fitting. Look carefully for signs of strand fracture at this position. These wires are much less
flexible and extra care should be taken not to kink the wires when packing or rigging the glider. Due to
the shorter 'life' of these wires it is especially important to replace, even apparently undamaged rigging
wires, every 100 hours of flying or more frequently.
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