Windtech serak User Manual
manual
SERAK
3
Windtech
w w w . w i n d t e c h . e s
SERAK
24-25-27-29
flight manual
4
> index
> congratulations –––––––––––––––––––––––––––––– 05
> warning & liability ––––––––––––––––––––––––––– 06
> construction & materials –––––––––––––––––––––– 06
> certification ––––––––––––––––––––––––––––––––– 07
> best glide ––––––––––––––––––––––––––––––––––– 07
> flight –––––––––––––––––––––––––––––––––––––– 08
--launch –––––––––––––––––––––––––––––––––––––– 08
--strong wind ––––––––––––––––––––––––––––––––––– 08
> thermal flying ––––––––––––––––––––––––––––––– 09
> flying in turbulence –––––––––––––––––––––––––– 09
--asymmetric tuck ––––––––––––––––––––––––––––––– 10
--frontal tuck ––––––––––––––––––––––––––––––––––– 10
--asymmetric stall (spin) –––––––––––––––––––––––––––– 11
--landing –––––––––––––––––––––––––––––––––––––– 11
> weather to fly ––––––––––––––––––––––––––––––– 12
> emergency procedures & quick descent techniques – 12
--big ears –––––––––––––––––––––––––––––––––––––– 12
--spiral drive ––––––––––––––––––––––––––––––––––– 12
--b stall ––––––––––––––––––––––––––––––––––––––– 13
> maintenance –––––––––––––––––––––––––––––––– 14
> warranty ––––––––––––––––––––––––––––––––––– 14
> technical specifications–––––––––––––––––––––––––15
> line measurements ––––––––––––––––––––––––––––16
> flight log ––––––––––––––––––––––––––––––––––– 22
5
> congratulations
Congratulations on the purchase of your new SERAK DHV 1-2.
The SERAK has been designed for intermediate and experienced pilots that are looking
for a superb all round performing wing with incredibly sweet, dynamic handling , and
absolutely minimal compromise in stability. The SERAK's amazing balance of performance, ease of use and stabilty with give your flying skills and confidence a massive
boost, and take you easily to new levels of acheivement!
We strongly recommend that before you even unfold the SERAK you carefully read this
manual in order to be aware of any limitations, performances, take off and flight characteristics, landing procedures, emergency situation and maintenance.
We always appreciate your feedback, so please send us your comments, positive or negative, in regard to the
Windtech
range.
You are the best feedback and support for future products, and please remember that we
are always happy to give you any help & advice.
Best winds
>
Windtech
team
6
> warning & liability
This manual has been created to give the pilot help and hints to help with the correct
operation of this wing. By no means is this a substitute of a training course, or appropriate experience gained with years and hours of airtime, nor is this manual intended to
give pilot´s knowledge regarding flight safety.
Windtech
assumes that the purchasing pilot has the appropriate pilot's licence, has
taken a training course, and has the suitable ability and enough experience to safely fly
the SERAK.
This manual cannot be used for operational purposes. The flight log & registration card
must be filled and stamped by the dealer & returned to
Windtech
in order to claim on
the guarantee.
The use of this paraglider is entirely at the user's own risk. As with any adventure sport
paragliding is a high risk activity-especially without taking the appropriate precautionstherefore it must be absolutely understood that
Windtech
& the dealer do not accept
any responsibility for accidents, losses, injuries, direct or indirect damage following the
use or misuse of this product.
> desing materials
The SERAK is a DHV 1-2 glider that offers
total security with beautiful handling & performance. The performance is very high due to a
well-defined structure with 52 cells, with an
internal structure comprised of diagonals of different types, depending on the width of the cell
and an optimized line layout to reduce the ove-
rall number of lines.
--cloth
The upper and lower panels are made with 44
gr. Porcher Marine Skytex nylon. The ribs are made with stronger nylon of to prevent airofoil deformation, even after several years of intensive use. Rib (cell wall) reinforcements
are made of Dacron 310 &180 gr. Line attachment points are made of polyester.
--lines
The lines are made of Kevlar covered with polyester sheath for protection against wear,
UV and abrasion. The lower section of the brake lines is made from Dyneema. This material is less prone to failure after repeated use through the brake pulleys. The riser karabiners, also called, are made with stainless steel of 800 Dan. Risers are made of pre-stret-
ched polyester of 900 Dan.
7
> certification
The SERAK is a paraglider of an intermediate level that has passed easily the tests of
the DHV level 1-2. This glider has successfully passed the DHV shock test with a weight
equal to the maximum total (all up) take-off weight. This means that the paraglider is
certified to resist to a load of 8 (eight) times the gravitational acceleration (8 G´s).
As regards the weight range of the glider, ALWAYS be certain that you are within the
correct weight range of the glider. To fly under, or over, weight can adversely affect the
stability of the SERAK & flown as such will no longer be a certified glider.
> best glide
Best glide in nil wind, and still air, is obtained at “trim” speed- that is brakes fully released and no accelerator (speed bar) applied. It is always best to fly with a light pressure
on the brakes, keeping a “feel” on the wing in case of unexpected turbulence.
When flying into (against the) wind a better glide can be obtained by using the speed
system. The following is rough guide line as to how much to apply.
-With around 10 km/h of head wind, best glide is obtained with 25% accelerator applied.
-With around 15-25 km/h of head wind, best glide is obtained with 50% accelerator.
-With around +25 km/h of head wind, best glide is
obtained with 75-100% accelerator.
When flying downwind (wind from behind ) the best
glide is obtained between 0% brake and 10% of
brake.
The SERAK is a DHV
1-2 accelerated but using the
accelerator system close to the ground is not advisable & it should be released as soon as turbulent air
is encountered.
Note that the glide angle is not affected by the wing
loading, but that the security is.
Always fly a glider that is the correct size for you, and
remember that if your flying weight is below the stated minimum, the speed range will diminish and
inflation problems may appear. Also the handling will
degrade in turbulent conditions, and it will be easier
to sustain collapses. If your flying weight is above the
stipulated weight range, this will result in a higher
minimum speed and faster landing speed and the
stall speed of the glider will also be higher.
8
> flight
Each and every glider has a checklist note passed though our strict quality control in the
factory. This includes line measurement, ground inflation and flight testing. Contact your
distributor for more information about this, and if your glider has not been pre-inflated
ask them to do so for you. Every glider should be test flow before it is sold.
Note that each glider has a unique sticker attached to the centre cell with the serial
number, type of glider, size and weight range.
We recommend that your first flight on your new glider be on a gentle slope in calm conditions before making any further higher flights, just to check the glider and for you to
get used to flying it.
We also recommended that you use a harness that has an ABS cross strap system and
the maximum width possible for the chest strap is 38 cm between karabiners.
For you own safety, we strongly recommend the use of back protection, helmet and
Windtech
WindSOS reserve.
> launch
Choose an open space free of any obstacles, especially trees and power lines.
Open your glider in a slight horseshoe
arc (semi-circle) & thoroughly check
that you have no knots or line twists.
Make sure your helmet is securely fastened & clip into your harness making
sure all straps are securely fastened.
Connect risers to your harness making
certain that your karabiners are fully
closed & you have no twists in the
risers.
> strong wind
We do not recommend taking off, or
flying, with a wind speed higher than
25 km/h; this may change depending of
pilot´s experience, but we remind you
that flying in poor weather conditions is the single greatest cause or accidents in freeflying.
We recommended that the reverse launch is the best technique when the wind is strong
at take off.
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