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Discussion in 'General Archery Forum' started by mx309, Mar 3, 2008.
Whats the differance between 340 and 400 carbon? the diameter or wall thickness? If so which one ?
without more info I'm going to say spine difference. The 400 will be weaker and prolly lighter than the 340.
A 340 is stiffer spine than a 400. Less flex
An most of the time it is thicker the stiffer the spine. But when buying arrows some company's use the higher the number the weaker the spine. So use the lower number as the weaker spine. So check before buying any new or used arrows.
I think if you look at them, most use the same nocks and inserts, so the inside diameter might be the same, but the wall is thicker and therefor, the outer dimeter is different. May vary manufacturer/manufacturer.
What brand of arrow ? Sounds like you're talking Easton but you should add more detail to your question. Good question, you should just elaborate some more...
or stiffness of the arrow. The number is the amount of flex in the shaft, when a weight is hung in the center. The 340 flexes .340 " .400", so a 500 is .500 or 1/2 "
Easton uses this for arrow spine , but some other companies use other designators, it can get a little confusing. :noidea: