Tessier DUALSKI Instruction And Maintenance Manual Download Page 3

 

 

1. PRESENTATION AND INSTRUCTIONS 

FOR USE 

 

 
The objective for the following explanations is not to teach the user to ski but to  give 
basic advices for the use of this equipment. 
 
The 

Dualski

®

 is intended for those disabled at the lower limb, allowing them to ski in 

an independent manner after some initial instruction.  
An 

assistance bar

 (optional) allows the accompanist to help the seated skier during 

the learning phase. 
The  articulated 

piloting  bar

  (optional)  is  designed  for  the  driving  of  the  Dualski  by  an 

accompanist to make skiing partially or totally dependant person. 
For those two options, read the specific document before use. 
 
The  first  prototype  appeared  in  1996.  The  Dualski  has  changed  considerably  since 
then and has become a high-performance apparatus with a great deal of versatility. It 
has a totally articulated frame allowing the fitting of two skis with standard bindings. 
The technique used for the Dualski has been the subject of two patent applications.  
 

Choice of skis 

 

Autonomous skiing: 

As for an able-bodied person, this depends on the type of ski used, the weight of the 
skier  and  his  ability.  Our  own  experience  has  shown  us  that  it  is  necessary  to  use 
skis that are approximately 10 cm shorter in relation to an able-bodied person of the 
same  weight  and  ability.  Medium-of-the-range  parabolic  skis  are  sufficient  and  are 
often  more  efficient  than  competition  skis  on  whic

h  a  “Dualskier”  could  hardly  put 

enough pressure to use their potential. We recommend not sharping the edges of the 
skis at 87° or 88°. A good sharpening of the ski edges at 90° is  enough and avoids 
ski vibration problems. 

With a piloting bar: 

When using the Dualski with the piloting bar, medium-of-the-

range “carving” skis with 

a length between 140 and 150 cm are recommended. 
 

Choice of bindings 
 

The  binding 

to  be  used  depends  on  the  skier’s  weight  and  ability.  It  is  advisable 

never  to  take  one’s  skis  off  so  the  bindings  must  always  be  adjusted  to  their 
maximum level. 
With the Dualski, we recommend “standard” bindings that can be adjusted up to 14 
DIN or more or “pivot” bindings that can be adjusted up to 12 DIN (or 
14). 

“Pivot”  type  bindings  are  well  adapted  to  the  Dualski  because 

they tolerate punctual overloads 
 
 

 

- Standard binding: 14 DIN minimum  
- Pivot binding (Rossignol Axial or Look PX): 12 DIN minimum  

Summary of Contents for DUALSKI

Page 1: ...1 Leisure DUALSKI Instruction and maintenance manual www dualski com ...

Page 2: ...ki 12 5 Fournales Shock absorber 14 6 Adjustment and maintenance 16 Footrest 16 Latch for the use of chairlifts 16 Carving out turns system 16 Ski lift harness system 16 Maintenance program 17 Seat 18 7 How to adjust his stabilizers 19 Comfort Stabilizers 19 Superlite Stabilizers 20 8 Assistance and piloting bars 21 9 WARRANTY 23 Manual for Dualski from n DS703 to DS900 ___ Design manufacture mark...

Page 3: ...ends on the type of ski used the weight of the skier and his ability Our own experience has shown us that it is necessary to use skis that are approximately 10 cm shorter in relation to an able bodied person of the same weight and ability Medium of the range parabolic skis are sufficient and are often more efficient than competition skis on which a Dualskier could hardly put enough pressure to use...

Page 4: ...n a position of stopping the skilift using the emergency button in the event of a malfunction of the harness system or of any other problem This is a condition of the authorization s validity The skier must have already prepared his harness before arriving to the ski lift attendant The semicircular ring of the harness must be closed A plastic adjustment enables the arch of the ring to be adjusted ...

Page 5: ...r a chairlift with 3 places on the middle place For a chairlift with 4 places or more on one of the middle places The footrest bars of the seat s safety rail are mainly positioned every 2 places In any event do not position the Dualski between 2 places where the footrests of the seat s safety rail are likely to obstruct This should be imperatively entirely folded down Lift the Dualski seat and get...

Page 6: ...ssée sur la chape arrière 4D 1 patte anti déchaussement 4E 1 additif pour centrage de la fixation arrière 4F 2 5 Repose pieds 1 6 Crochet d attache du largueur soudé sur châssis 1 7 Élément Amortisseur marque Fournales ou Öhlins 1 8 Biellette d amortisseur 1 9 Vérin de compensation pour utilisation télésiège 2 10 Système de prise de carres voir descriptif chap 3 1 11 Verrou pour utilisation des té...

Page 7: ...7 14 15 1 5 12 13 10 7 16 9 11 8 2 3 4 6 Figure 1 Figure 2 Sabot details mark 4 ...

Page 8: ...ith but it offers better performances This configuration is recommended for good skiers C Carving This configuration allows a very incisive skiing style and is reserved to very good skiers With this configuration it becomes hard to make the Dualski sliding The maximum angulations angle are F 51 P 55 C 59 Replacement of the angle plates F P or C Replacement method for the angle plates Note for this...

Page 9: ...9 Figure 3 Figure 4 ...

Page 10: ... Wichard brand When the poles are equipped with a clamp ring instead of the nut tightening the seat then this hook can be attached to the clamp ring 8 Snap hook to attach the rope on the apparatus while the skier is seated 9 7 mm diameter traction cord 10 Most of the knots are covered with a sheath 11 6 mm diameter main release cord It has a 150 mm long sheath to make release easier if the ring su...

Page 11: ...11 Figure 5 ...

Page 12: ...12 Installation of the ski lift harness on the Dualski Frame seen from backward Hook fixed on the frame ...

Page 13: ... pass each end of the cord with their snap hook through the loop as carried out in 1 3 In order to completely immobilize the cord pass each end through the 2 loops as carried out in 2 so as to tie a simple knot on each side 4 Adjust the length of the cord so that the closing snap hook just exceeds that of the strap holding the seat s backrest in place 10 Note the cord of the harness must always pa...

Page 14: ... 8 Kg cm Inflate to 17 Kg cm Dualski lower model 295 mm between the two axes of the shock absorber Person s weight x 0 27 Example the person s weight 70 kg 70 x 0 27 18 9 Kg cm Inflate to 19 Kg cm Dualski lower model with piloting bar Person s weight x 0 30 Example the person s weight 70 kg 70 x 0 30 21 Kg cm Inflation method 1 Remove the valve cap 2 Screw the pump to the valve of the shock absorb...

Page 15: ...y during the first uses This doesn t mean there is a leak This film is even useful for a good working and preservation of the joints of the Fournales shock absorber During the adjustment the Uniski or the Dualski must be empty If the skier is in the seat it s absolutely necessary to ease the shock absorber from the weight of the skier during the operations described above If the Uniski or the Dual...

Page 16: ...ng surface of the feet Correctly tighten the 2 screws 3 Replacement of the straps holding the feet If a strap or buckle is damaged it is necessary to remove the footrest in order to replace it Latch for the use of chairlifts The latch is mounted with waterproof grease When this grease looses its efficiency not before and the latch becomes harder to use with cold weather it means that there is humi...

Page 17: ...r a shock Check the straps of the frame and seat Every 30 hours of use or after a shock Spray over the 4 ball joints of the Dualski base Every 30 hours of use Send the Fournales shock absorber for a servicing Contact us The shock absorber must be exclusively be serviced by Fournales France In case of observation of a wrong running Send the Öhlins shock absorber for a servicing Contact us The shock...

Page 18: ...it out Seat assembly Use the hardware as in the sketch above Attention screws that are not the original ones and which are too long could damage the seats and chairlifts If the seat is not the original TESSIER one then it is necessary to drill the rear securing points at a distance of 215 mm from the back of the seat according to the above sketch This is important in order to respect the balance o...

Page 19: ...he stabilizer Remove the superior screw Slightly unscrew the inferior screw Without removing it Choice the line inferior or superior by making slide the inferior screw in the light Put back the superior screw in the appropriate hole and tight both screws correctly I 2 Adjustment of the length of the stabilizer The length adjustment must be done after the angle adjustment For a beginner seated in a...

Page 20: ... General instructions are the same as for Comfort stabilizers II 1 Adjustment of the ski angle Screw or unscrew the stop screw thanks to a key of 11 to change the angle Check that both stabilizers have the same angle II 2 Adjustment of the length of the stabilizer Release the string Move the quick clip to the desired height Tight the string II 3 Blocks installation Put the blocks just under the qu...

Page 21: ...ong screws 8x45 and 8x80 delivered with the bar So as shown in figure 6 the seat is fixed to the frame at the same time as the bar Take care not to loose the shorter screws 8x45 and 8x60 needed to fix seat without the assistance bar Using too long screws could damage the seats of the chairlifts For this reason 4 nuts are welded on the bar to tidy the shorter screws The sizes of the bars have been ...

Page 22: ...of a Dualski with piloting bar is easy to learn for a good skier but we strongly recommend to begin with the help of a ski instructor who knows this equipment So the learning of how to use it on the snow and on the chairlifts will be faster and done in a totally safe way The pilot must choose the difficulty of the piste he will use according to his skiing level his strength and the weight of the s...

Page 23: ...r incompatibles with it Any damage or anomaly following an accident a wrong use or negligence from the client Skis and bindings This warranty is cancelled in its totality in case of modification of the frame of the shock absorber or any of its components This warranty is limited to the repairing or the replacement of the defective element and this is the only recourse of the warranty This warranty...

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