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PRESENTATION - Concept

A ski « pin-tail »


(It's the diffrence in between the width of the tip and the tail.
( Arcos 122 - 109 = 13 pin-tail )
With the pintail shape the ski enters the curve easier, which is why we don't need so much side cut. The advantage is to keep the width under the boot so the ski pivots easily and you have much more flotation in powder. Another advantage of a wider tip, is that you can ride balanced in the middle of your skis even in deep powder.

- This profil has to be with a pintail shape, becquse a normal tip slope would make the ski to directional. The other reason of course is to hit the powder without breaking it and floating on top.



  A tip very progressive :
spatule-ski-bumtribe.jpg

You'll notice that the concept we have have since 2002 is very fashionable this winter : some brands (we won't tell you the name...) have just discovered  this for this winter. See Ski mag Test 2009.



 
2 FLEXS per size :


Our skis are hand made in small series so we can propose a different flex for different uses or user. A custom ski !

One size per model because each ski is unique. Using the same side cut for a different length making a totally different ski.

The idea is to forgot the ski and ride in total confidence. Not burning your legs you save energy for the next days...

The white ashwood core :

Also used for boats, bows, and dog sledges this wood has got really good mechanic proprieties, durability and resistance.



BINDING SET UP

Diameter and length of drilling :

DIAMETER : 3.5 mm
LENGTH : 9mm

The white glue generally used in shops is more to seal the hole. With wide skis we increase the effort in torsion so you need a better product like araldite or loctite.

Boot centre :
(Measurement from the end of the ski tail to the centre of the boot).

SKI
Drι 189 …………………………….....………………………… 83.0 Cm
Tapis Volant 177………………….…………………………… 79.0 Cm
Steack Hachι 167 ……………….....…………………….…… 75.0 Cm
Arcos 185 ………………………………………………….…… 82.5 Cm

TELEMARK
Drι 189 …………………………………………… Front of foot + 5 Cm forward from the balance point.
Tapis Volant 177 ……………..........………….… Front of foot + 4.5 Cm forward of the balance point.
Steack Hachι 167……………….………………. Front of foot + 4 Cm forward from the balance point.
Arcos 185 …………………………...............……..Front of foot + 5 Cm forward from the balance point.

 

FINISH :

All of our skis get a
specialised PRO finish at a SKI CLINIC in Cluses.


CONSTRUCTION

Base…………………………….....…………………..Ptex 4000
Top sheet.…………………………….....…………. PU bi density from IMS
Side walls………………………………………………..….. Phenol
Kevlar Fibre and Glass fibre under the core.
A titananium plate added to the glass fiber under the top sheet, only for the 00.

We choose not to use carbon fibre combined with a white ashwood core, as it would have made the ski less stable.

White ashwood cores from tip to tail for an even flexability.
Wide edges for more resistance and durability .

For the tip and Tail parts we have a special concept with an elastomer insert laminate in the sandwich. This is a good protection from impact and vibration.

Our skis are pressed at a temperature of 50 degres for a minimum time of 6 hours. This is only possible in a small work shop

A White ashwood core is the soul of the skis :

Also used for the construction of boats, bows, and dog sledges this wood has got really good mechanical proprieties, durability and resistance.

We choose the wood in switzerland without sticking the sheets together. The sheets are one piece from tip to tail to get an even flex.


FABRICATION


When the Duret factory closed we looked for a place to build and develop a Bumtribe ski with it's design and shape.
The cost of the tooling and moulding in a big factory is to high  unless you plan to produce a lot.
The other option would have been to use an open mould this means no proper design.
We found the place we were looking for a really small factory with high quality products and reasonable costs for moulds and tooling.
But now, to be really independant and to be able to develope new models more easily, we made our own factory at home in Habere-Poche, Haute-Savoie right in the French Alps !


ski-sans-deco.jpg

DEVELOPMENT


The double-zιro version arrived for the winter 06-07 :
Tested last winter and summer in south america the Bumtribe 00 with Titanium is available for the Drι 189, the Arcos 185, and the Tapis Volant 177. We added a titanium plate and ketp the same sandwich construction.
More stable in hard terrain and in high speed, if you want to ride hard and fast...
For the winter 08-09 : we have a new model : The DRE 2, 185 cm. Available in 2 flexs and news designs : if you don't like the Artist's designs, you can choose to have a simple one, white top sheet instead for each models.

 
Now we're studying new skis :
             
              - An ιvolution lighter for the Fakir 179 Cm for Rando.
              - A fat inversed camber en two sizes
              - A pur Derby ski
              - A Monoski for the DEFI FOLY



 

                                                                                                                                                                                                  Photo : Proto of transparent ski wich allows to see the wood lamelate.
 

Creation date : 20/07/2008 @ 20:37
Last update : 16/12/2011 @ 18:46
Category : PRESENTATION
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