Choice

Tuning

Brace height

We recommend to respect the value in a +-10mm range.

Lower the brace height if you focus on speed, and increase it for stability and comfort.

Bow	74"	72"	70"	68"	66"	64"	62"	60"	58"	56"
Brace height +-10mm	239 mm	232 mm	225 mm	218 mm	211 mm	205 mm	198 mm	192 mm	186 mm	180 mm

Tiller

Tiller refers to the distance between the string and top limb, versus the distance between the string and bottom limb.

For Uukha limbs, the most common correct setting is between 0 and 6 mm.

String

The chart indicates the number of strands we advise, depending on the weight measured at your draw length and the string material.

Length to obtain advised brace height*:

Bow	74"	72"	70"	68"	66"	64"	62"	60"	58"	56"
S-Curve	1785 mm	1735 mm	1700 mm	1650 mm	1600 mm	1550 mm	1500 mm	1450 mm	1400 mm	1350 mm
Xcurve	1785 mm	1735 mm	1700 mm	1650 mm	1600 mm	1550 mm	1500 mm	1450 mm	1400 mm	1350 mm
Curve	N/A	1725 mm	1685 mm	1635 mm	1590 mm	1540 mm	1490 mm	1440 mm	1390 mm	1340 mm

* estimated length for other brand risers.

Arrows

We recommend following the arrow shaft tables offered by their respective manufacturers.

FAQ

Top / bottom limb location

The poundage markings must be situated in such a way that while the bow is held in a firing position, the writing on the top and bottom limbs would be correctly oriented for reading.

Profit or loss of bow sight scale mark

Does a profit on bow sight scale mark correspond to a speed profit when we compare two limbs pairs ?

Not necessarily: the bow sight scale mark depends primarily on the archer's morphology and the position of the nock point compared to the riser with the maximum draw length.

According to the way in which the two limbs top and bottom work, the height of this nock locator may vary.

None of the traditional adjustments (brace height, tiller) are made at the maximum draw length, so there is no reason that the nock point height will be the same when at maximum draw length.

To do a comparative speed test, we know of two methods:

Use a chronograph.

Compare the bow sight scale mark at 70m and at 10m: the smaller the variation, the higher the speed.

Noise, vibrations

When the bow is correctly set up, the noise is very short and quiet, a bit like a silenced gun. The limbs will stop at once with very few oscillations.

If this is not the case:

Check that the tiller screws are between medium and max settings, with tighter being better.

Check that brace height is set at what we advise in the "Tuning" section.

Use a string made of BCY 8125 or Astroflight; other brands work, but those two work especially well.

Last and very important, use a quality stabilizer with a good dampener and a mass at the end.

Limb savers are not recommended.

Limb tip

The tip is an integral part of the limb’s structure, so ours is very strong. Moreover, ours is very compact and elliptical for better aerodynamics, and a lower inertia.

Our limb tip’s shape has been researched to preserve your string serving: we have maintained a string after an endurance test of 30,000 cycles at a 35" draw length.

Why a longer bow ?

Grouping

A longer bow improves lateral stability and grouping.

Comfort

A wider string angle gives better hook consistency.

Smoothness

Longer bows are smoother for a longer draw length.

If your draw length is 30" or more

Adapting bow size to your drawlength

Bow size is linked to your AMO draw length*. 66" to 70" bows for archers having a draw length in the range 27" to 29".

If your draw length is 30", 31" or more, a 72" or a 74" bow will give you better results.

The secret of our XL limbs

Carbon Monolith

Thanks to our unique Carbon Monolith technology, providing unmatched torsion stiffness and lateral stability, it is possible to design XL limbs without sacrificing lateral stability or speed.

What about risers offering a +15% poundage increase when playing with the tiller bolts, such as the Gillo GT?

Our limbs are designed to provide the best performances in the -5%/+5% range of tiller bolts settings.

With a +15% setting:

You will lose much smoothness.

You will lose in terms of stored energy efficiency: the speed increase brought by the added poundage will be lower than expected.

The stress increase on the limbs will exceed 10%, corresponding to 5 inches of over-draw, with a risk of early failure and accelerated aging.

We consider such a configuration to be out of normal use conditions, and therefore it is not covered by our guarantee.

Maintenance

Guarantee

Calculate poundage at your draw length