UP Trango XC, Owner Manual And Service Booklet

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The UP Trango XC uses the same line
configuration as our competition wings, i.e.
unsheathed Aramide lines at all levels.
The lines are Liros LTC in the diameters
0.8, 0.9 and 1.1mm and have very good
proven records for dimensional stability.
They are also known to be very strong. At
all loops the lines have been spliced to
double their original diameter, thus
strengthening them in these crucial spots.
The line layout is simple, with three levels
(A, B and C) plus brake lines. All line
splicings are sewn, and the looping is
done using the familiar Larks Head knot –
this assembly method reduces the strain
on the loops and the risk of tensile
strength reductions over time. The finished
lines, including stitches, are under
rigorous and continuous control at the
assembly line, assuring the high quality
levels always associated with UP
products.
Each glider ½ has the following line
layout:
A-level: A1-A3
B-level: B1-B3
C-level: C1-C3(Stabilo)
Brake lines
The individual brake lines are gathered in
one main brake line which travels through
a low-friction pulley mounted on the rear
(C) riser. The main brake line has a mark
to show where the brake handle is
attached by factory default.
All main lines of each level are looped
together and attached to delta quick links,
which are connected to the risers. The
quick links have special line collectors to
prevent lines slipping, and are secured
using a strong thread-locking compound
(Loctite©), to prevent unintentional
opening. After maintenance work the delta
quick links should be re-glued with
thread locking Loctite©!
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The A- and B-risers are marked with
colours in order to help the pilot quickly
identify them both on launch and in the
air.
In order to make pulling „BigEars“
easier the A-risers are split so that the
outer A line has its own mini riser (see
ill. 2)
At trim speed all risers are 550mm
long. Upon activation of the speed
system the A1/2, the A3, the B and the
C3 risers are pulled variable amounts,
in order to reduce angle of incidence
more in the centre of the wing than
towards the wing tips. In order to
reduce the power needed to apply
speed we are using a high-grade
pulley from the yachting industry,
made by US manufacturer Ronstan.
A distinctive feature of the UP Trango
XC is the elaborate trimmer system,
known as the UP Pitch Trimmer. By
now in its 2. incarnation Dieser
sogenannte Pitch- Trimmer der 2.
Generation, these trimmers are
normally only seen on full-blown
competition wings due to the
limitations imposed by the LTF
certification procedure. On the Trango
XC it primarily serves to improve
climbing in thermals. Closing the
trimmers slows the canopy down while
simultaneously subtly changing the
airfoil. This in turn ensures that brake
travel and handling remains the same
even with fully closed trimmers. The
trim speed is reduced by about 3 km/h
with fully closed trimmers. We
recommend using the trimmers only in
weak, homogenous climbs as the
benefits aren’t discernible in rough and