ACE arrows - Is symmetry important?

[scolboy]

ACE arrows (and X10s I think) are barrel shaped, that is, thin at the front, larger in the middle and thin at the back.

Therefore how would you cut the arrow? For example if a new arrow shaft started life at 31 inches and the finished length needed to be 28 inches - do I need to cut all 3 inches from the front or 1.5 inches from both ends or it doesn’t matter and will not effect the arrow/bow tune

Anyone have any views on this?

[buzz lite beer]

Most are just cut off the front, some cut off the back to stiffen weaker spined arrows to gain weight savings and match the dynamic spine of a stiffer rated arrow, I don't know of anyone who cuts equal front back amount, though you have to be careful how much is cut off the front as the further back the thicker the shaft becomes and you don't want the shaft to be of larger diameter at the cut than that of the point or the carbon would just peel off in impact.

[gtek]

Originally Posted by scolboy

ACE arrows (and X10s I think) are barrel shaped, that is, thin at the front, larger in the middle and thin at the back.

Therefore how would you cut the arrow? For example if a new arrow shaft started life at 31 inches and the finished length needed to be 28 inches - do I need to cut all 3 inches from the front or 1.5 inches from both ends or it doesn’t matter and will not effect the arrow/bow tune

Anyone have any views on this?

Presuming you are shooting a recurve, you should leave the rear portion of the shaft alone.

The tail spine and flex pattern of the ACE and X10 is carefully designed to provide more forgiveness in a finger release. Cutting from the rear without knowing what you are doing can lead to unexpected effective spine values.

In addition it is very difficult to match the precision of the Easton factory cut at the nock end using ordinary arrow saws. This precise cut is needed for best nock alignment and performance.

[Tarkwin]

this leads to additional questions.

Is the aluminium core barrelled or just the carbon sheath/overwrap thicker towards the middle of the shaft length?

If so, how much can be cut from the front before there is an issue with pile fitting?

[tel]

There is a chart on alt services (no links!) under the arrow details that gives the maximum trim allowed for each shaft size...

[buzz lite beer]

Originally Posted by Tarkwin

this leads to additional questions.

Is the aluminium core barrelled or just the carbon sheath/overwrap thicker towards the middle of the shaft length?

If so, how much can be cut from the front before there is an issue with pile fitting?

the core tube is parallel with wraps of carbon around it and I believe ground to its barrelled shape by super high tech machinery from a distant galaxy.

[worthipa]

Originally Posted by tel

There is a chart on alt services (no links!) under the arrow details that gives the maximum trim allowed for each shaft size...

The new Easton 2008 catalogue is now available for download from the Easton website here: http://www.eastonarchery.com/pdf/easton_target_08.pdf

All the trim lengths are shown in the "Maximum Trim Amount" columns for the A/C/E and X10s.