Uukha carbon technology

  • 1 Uukha Technology | Unique
  • 2 Composite material | High performance

Composite materials


By definition, they are made up of reinforcements, bound together with a resin.

The first appearance in their current aspect can be traced back in the second half of the 20th century.

They gradually replaced aluminum, which had already previously replaced wood in high performance applications.

Many products have followed this very same evolution from wood to Aluminum to composites: tennis rackets, boats, aeronautical engines, and… bows.

The Monolith C


Uukha bows are made of epoxy impregnated carbon reinforcements, molded at high pressure and high temperature.

The result is a monolithic composition whose mechanical properties are far higher than those of traditional laminates.

This technique has the advantage of being completely insensitive to weather variations. We assemble aramide, glass and carbon fibers together, in order to optimize stability and to remove vibrations.

Our Ux100 limbs are 90% carbon/epoxy. This percentage reaches still 15% in our entry level limbs.

Our products are developed following processes used by the aeronautic industry.

Smoothness


Poundage increase per added drawlength inch in the clicker zone is as high as bow is stacking. When the value is small the bow is smooth.

Smoothness is just mesured on the draw force curve, it's not subjectiv.

On Uukha limbs, we have measured values corresponding to 20% more smoothness than best bows on the market.

(we tested Hoyt GM, G3, 900CX, 990TX,F4, F7, Win&Win Inno, Napecs, InnoEx, Kaya Vperf).

Torque stiffness


When we measure limbs torsion stiffness, Uukha limbs set new levels. Ux100 show 80% more ( almost twice) lateral stiffness than the best limbs on the market.

(we tested Hoyt GM, G3, 900CX, 990TX,F4, F7, Win&Win Inno, Napecs, InnoEx, Kaya Vperf).

Drawforce curve


We have compared the Ux100 limbs with several reference limbs (same riser).

Curves of reference bows, in green and blue on the graph, are very close. The Ux100bow curve, in red on the graph, is clearly different.

NB: these curves represent accurate data.

The curve slope is weaker at 29”. Ux100 limbs are thus smoother.

The curve “bump” is more pronounced. After the release, the thrust remains higher. The thrust of the arrow also falls less quickly than when using other limbs. The thrust is consequently more continuous.

Archer Benefit:

Smoothness = minor tiredness, a greater easiness at the end of the traction

The "bump" of the curve = a more regular thrust for a much more precise arrow exit.

(we tested Hoyt GM, G3, 900CX, 990TX, F4, F7, Win&Win Inno, Napecs, InnoEx, Kaya Vperf).

Validations


These results have been confirmed by comparative tests carried out by an independent laboratory (CRITT Sports loisirs)

Our specialist’s opinion :


" During the traction movement, we feel the great smoothness. When the arrow is released, we are then impressed both by the fluidity of the arrow exit and its speed. Very little vibrations can then be felt in the bow. The arrow lateral dispersion is also reduced by the impressive limbs’ stiffness. A synthesis of performance and comfort that makes shooting sessions particularly pleasant and efficient. "

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