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Arrow Spine Converter

Arrow Spine Converter

Pounds (ATA/AMO) ASTM Values (Rounded)

Easton Aluminium Tubes Common ASTM Spine Options

Deflections:
ATA/AMO 2.0 lb @ 26″ : — in
ASTM 1.94 lb @ 28″ : — in (—)
Easton Tube: — lb
ATA Pounds: — lb

Will try to choose the nearest stiffer Easton/Common Spine match.

Longbow Arrow Checker

Quick Longbow Arrow Checker

Arrow → Bow Matcher

Static Spine (lb): Wood Type: Fletchings: Pile Weight (grains): Shaft Diameter: Arrow Length (nock throat → pile, inches): Your Draw Length (inches):

Flemish String Calculator

Longbow Shaft Exactor

Still working on the maths for this to model point on to body/anchors and against more chronograph data for a larger selection of longbows!

Your Details

Draw Length (inches): Archer Height (inches): 5′10″ Hat Size:

Warbow (Adds 2" to shaft lengths) Use Chronograph Data

Longbow Information

Draw Weight (lbs): Draw Length Weighed (Usually 28"): Bow Length (AMO):

String & Bow Speed: Shelf Style:

Arrow Components

Wood Type: Fletchings: Pile Weight (grains):