DaVinci Rhythm Manuale utente
DAVINCI GLIDERS / RHYTHM
1
REV. 5
20 August 2017
Davinci Products Inc.
53 Sinchon-gil, Okcheon-myeon, Yangpyeong-gun, Gyeonggi-do, South Korea. (12505)
Tel. +82(0)10-9799-3472 Fax. +82(0)10-9799-3472
DAVINCI GLIDERS / RHYTHM
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Congratulations!
Thank you for choosing the RHYTHM.
The RHYTHM has been designed for newcomers and accu-
racy competition pilots who want to be a winner.
This manual will help you to get all information about your
glider. We strongly recommend that you read this manual
carefully in order to be aware of any general limitations,
performance characteristics, take off and ight character-
istics, landing procedures, dealing with emergency situa-
tions and general maintenance.
This is information about the design of the RHYTHM, advice
how to use it best and how to care for it to ensure it has a
long life, We hope that the RHYTHM will give you a lot of
satisfactory ying times.
WARNING!
THIS IS NOT TRAINING MANUAL. ATTEMPTING TO FLY THIS
OR ANY OTHER PARAGLIDER WITHOUT PROPER INSTRUC-
TION FROM A CERTIFIED PROFESSIONAL INSTRUCTOR IS
EXTREMELY DANGEROUS TO YOURSELF AND BYSTANDERS.
DAVINCI GLIDERS are carefully manufactured and inspect-
ed at the factory. Please use the glider only as described in
this manual.
Do not make any modications to the glider.
As with any sport – without taking the necessary safety pre-
cautions, paragliding can be dangerous.
Congratulations!
-DAVINCI GLIDERS TEAM-
DAVINCI GLIDERS / RHYTHM
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INDEX
1. Technical DATA
2. Materials DATA
3. Introduction and
Pilot Target
12
11
10
9
7
6
5
4
3
14. Packing your RHYTHM
15. Maintenance and
cleaning
16. Caring tips
13. Landing
17. Warrantee
18. Respecting nature
and environment
8
4. Harness
6. Lines
7. Accelerator system
5. Risers
8. Pre-ight check
9. Take-0ff
9.1 Tow launch
11.2 Frontal collapse
10. In ight characteristics
11. Deations
11.1 Asymmetric collapse
11.5 Asymmetrical stall
11.6 B stall
11.4 Deep stall
11.3 Full stall
12.2 Spiral dive
12. Descent Techniques
12.1 Big ears
11.7 Cravat
DAVINCI GLIDERS / RHYTHM
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1. Technical DATA
RHYTHM XS S M L
CELLS
NUMBER 36 36 36 36
CLOSED 8 8 8 8
FLAT
AREA m² 21.9 25.4 27.5 29.8
SPAN m 10.2 10.9 11.3 11.8
ASPECT RATIO 4.7 4.7 4.7 4.7
PROJECTED
AREA m² 18.9 21.9 23.7 25.7
SPAN m 8.0 8.6 8.9 9.3
ASPECT RATIO 3.38 3.38 3.38 3.38
FLATTENING % 13.7 13.7 13.7 13.7
CORD
MAX m 2.8 3.0 3.1 3.3
MIN m 0.60 0.65 0.67 0.7
AVER m 2.2 2.3 2.4 2.5
LINES
HEIGHT m 6.38 6.87 7.15 7.4
MAIN 3/4/3
RISERS
NUMBER 3 A,A’/B/C
TRIMS NO NO NO NO
ACCELERATOR 120 120 120 120
WEIGHT RANGE MIN-MAX KG 55-75 70-95 80-105 95-120
CERTIFICATION EN-926-1/2
LTF KG EN-A EN-A EN-A EN-A
GLIDER WEIGHT KG 4.3 4.6 5.3 5.4
DAVINCI GLIDERS / RHYTHM
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2. Materials DATA
CANOPY FABRIC CODE SUPPLIER
UPPER SURFACE 30D FM DOMINICO TEXTILE CO
BOTTOM SURFACE 30D FM DOMINICO TEXTILE CO
PROFILES 30D FM(NON WR) DOMINICO TEXTILE CO
DIAGONALS 30D FM(NON WR) DOMINICO TEXTILE CO
RISERS FABRIC CODE SUPPLIER
MATERIAL WEBBING 20MM GUTH&WOLF GMBH
PULLEYS RIELY LW RILEY PTY LTD
SUSPENSION LINES FABRIC CODE SUPPLIER
UPPER CASCADES DSL-70 LIROS
MIDDLE CASCADES PPSL-120 LIROS
MAIN 7343-280 EDELRID
UPPER STABLE DSL-70 LIROS
MAIN STABLE 6843-160 EDELRID
UPPER BRAKE DSL-70 LIROS
MIDDLE BRAKE PPSL-120 LIROS
MAIN BREAK 10N-200 EDELRID
DAVINCI GLIDERS / RHYTHM
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3. Introduction and Pilot Target
The RHYTHM is an easy-going EN/LTF A glider which is suitable for training and accuracy
competition. The main focus of design is on safety and maximum forgiveness in handling, but
with an eye to handling and performance. The RHYTHM is perfectly suited for beginner pilots
looking for a glider with maximum safety. Long brake travel and excellent passive safety, as
well as the good stability make the good ideal for progression. The RHYTHM sits well within the
limits of the LTF/EN-A class as proven by the certication test results in all manoeuvres.
-LTF and EN certication
The RHYTHM is certied during ocial testing as LTF /EN-A.
The glider has been type-tested for “one-seated” use only.
-Suitability for training The RHYTHM is suitable for the use in the school and educational ying.
-For the RHYTHM it has minimum of 65cm symmetrical travel length at maximum total-load.
It would be dangerous to use the brake travel according to those numbers, because it is
not practicable to measure the brake travel during ight, and in turbulences the stall might
occur with less brake travel. If you want to use the whole brake travel of your glider safely, it
is necessary to do many intended spins and full stalls to get a feeling for the stall behaviour.
4. Harness
The RHYTHM is certied for harnesses in Group GH(without rigid cross-bracing). The
suspensiion points of the chosen harness should ideally have a caraviner distance of
approximately 45cm and a height of 40 to 48cm.
DAVINCI GLIDERS / RHYTHM
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6. Lines
7. Accelerator system
They come in different diameters of Kevlar and Dyneema with sheathed cover. They must to be
inspected every 150 hours or 24months maximum.
In case of Brake lines, it was cut a little longer, so every pilot can adjust it according to his
personal taste.
But you must always leave 10cm before the brakes line starts acting in order to avoid trailing
edge deformation when the wing is fully accelerated. In case the brake handle comes loose
during ight or any brake lines is cut you can use the C riser softly for directional control instead
of brake line.
The accelerator has being limited in travel up to a safety point, however you can gain 8-12 km
of extra speed.
You have to adjust the harness to the speed system so you can use all the speed travel.
To do so you have to be seated in the ground meanwhile you are in your harness and adjust
the lines by pulling up the risers with tension. Another person help to do this is recommended.
Make sure also that the speed bar is not pulling down the risers when you are not using it.
Once all the gear is rigged you have to test the whole speed travel in calm air. The use of the
speed system reduces the angle of attack and the canopy may be more sensitive to collapses
therefore do not use near the ground or in turbulent air and in case you are hit by turbulence
remove your feet off the speed bar as quickly as possible. Always far away from the ground
when using the speed bar.
5. Risers
RHYTHM has 3 risers. The A riser has a red cover to
easy identication. There is another line with red
mailon. There is A’ and is for the big ears.
Standard
[mm]
Accelerated
[mm]
Travel length
[mm]
A500 500 0
B500 440 60
C500 380 120
DAVINCI GLIDERS / RHYTHM
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8. Pre-ight check
9. Take-0ff
To know yourself with the glider it is a good idea to perform practice inations and ground
handling in advance. You should have no diculties ying the RHYTHM for the rst time in
suitable conditions, but as with all new equipment.
When you have the new glider, the below points should be inspected.
- Check the lines are clear and not twisted.
- Connection points between the glider and harness.
- All harness buckles are closed.
- The Karabiners are fully closed and not damaged.
- The sewing, condition of the lines and connection of the lines are right
- Internal demage to ribs and diagonal ribs.
- Demage to the top and bottom panels and seams between panels.
RHYTHM has easy ination behaviour at the forward/reverse launch because of its prole
system. To get the right wing shape for the take-off, pull the brake until the canopy shows at
the perfect banana shape on the at ground. While inating the RHYTHM, you should hold both
of th A risers on your hands. Smoothly and gradually inate the wing. It does not need excessive
energy and you feel the lift force very fast. It does not tend to over-shooting characteristics and
provides a leisurely launch time with you.
9.1 Tow launch
The RHYTHM is easy to launch using a winch and it has no any special skills.
To practice this launching technique special training is needed and you have
to know the procedures and dangers, which are specic for winching. We do
not recommend using any special towing device which accelerates the glider
during the winch launch.
DAVINCI GLIDERS / RHYTHM
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11.2 Frontal collapse
RHYTHM does not come out the symmetrical front collapse by itself. It has
high internal pressure with its well designed prole. However a symmetric
collapse my occur in strong turbulent condition, but It could be fast recovered,
if you apply the brake down to 15 to 20cm. Release the brake lines, you may
recover to the normal ight.
10. In ight characteristics
11. Deations
11.1 Asymmetric collapse
Asymmetric collapse usually happens when the pilot has not foreseen this
possible reaction of the wing.
Asymmetric collapses should be controlled by weight shifting away from
the collapse and applying enough brake to control your direction. And you
should use the brake to re-inate the glider.
RHYTHM has the best stable glide performance in a normal position with no any brakes. In
strong thermals and turbulence, we recommend to gently pull both brakes without acceleration
to increase stability. The brakes provide feedback about the surrounding air, which is needed
for active ying.
To familiarize yourself with the RHYTHM your rst turns should be gradual and progressive. To
make ecient and coordinated turns with the RHYTHM rst look in the direction you want to
go and check that the airspace is clear. Your rst input for directional change should be weight-
shift, followed by the smooth application of the brake until the desired bank angle is achieved.
To regulate the speed and radius of the turn, coordinate your weight shift and use the outer
brake.
In the unlikely event that a brake line releases from the brake handle or breaks, the glider is
manoeuvrable using the C-risers. By pulling gently on the C-risers it is possible to steer the
glider and land safely.
Alternative Steering:
In the unlikely event, that a brake line releases from the brake handle, or breaks, or the brake-
lines are tangled up, the glider is manoeuvrable using the rear-risers. By pulling gently on the
rear-risers, it is possible to steer the glider and land safely. Don’t pull the rear-risers too much,
to avoid a deep stall!
In spite of the RHYTHM has great stability of the ight, strong turbulence or piloting error may
cause a portion of the wing suddenly to be a deation.
DAVINCI GLIDERS / RHYTHM
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11.5 Asymmetrical stall
11.6 B stall
It can take place when you pull one of the brakes too hard, or while spiraling
at a small speed in turbulence you increase the angle of attack. Rotation in the
asymmetrical stall is called negative spiral. This is one of the most dangerous
ying situations. In order to get out of asymmetrical stall, just release the
brakes. There may follow side thrust forward with a following wing collapse.
The RHYTHM has a very clean stable B stall. To enter the B stall, the pilot
has to pull the rst 20cm slowly until the r glider loses forward speed and
starts to descend at around 6 m/s vertically. Do not release the brake handles
during B stall. If you pull too much B-line the glider may horseshoe and move
around a lot. If this happens, release the B risers.
To exit the B-stall the B-risers should be released symmetrically and in one
smooth, progressive motion. The glider will resume normal forward ight
without further input. Check you have forward ight again before using the
brakes.
11.4 Deep stall
11.3 Full stall
It is possible for gliders to enter a state of deep stall. This can be caused by
several situations including; a very slow release from a B-line stall; ying the
glider when wet; very old glider; or after a front/symmetric deation.
When you meet this situation you should fully raise up the both brakes and
push the A-risers forwards or use the speed bar symmetrically to regain
normal ight.
Full stall can occur when you fully pull the both brakes enough long time. This
means that the wing loses its forward momentum. To recover to the normal
ight you must release both brakes. After this usually comes a front dive
with a possible front deation. An asymmetric recovery (one control released
faster than the other) from a full-stall can cause a big dynamic collapse. The
full-stall is a hazardous manoeuvre and as such outside the scope of this
manual. You should practice and learn this manoeuvre only on a SIV course
under professional instructor.
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