Determining the correct length for a long bow string is typically done by referencing the bow's marked AMO (Archery Manufacturers Organization) length and ordering a string that is shorter than this measurement.
The exact length you need for a long bow string depends on the AMO length of your specific long bow. According to the reference provided:
- For a long bow, the string length you need is generally 3 inches shorter than the bow's AMO length.
For example, the reference states:
"And that's your amo length. So if your amo length is sixty-four inches on a long bow you need to order a 61 inch string."
This means if your long bow has an AMO length of 64 inches, you should order a 61-inch string.
Finding Your Bow's AMO Length
Most modern bows will have the AMO length marked directly on the limb. Look for a number followed by "AMO" or "AMSL" (Archery Manufacturers Standard Length) or sometimes just the number itself near the grip or on the lower limb.
Calculating Long Bow String Length
Once you find the AMO length on your bow, subtract 3 inches to get the approximate string length you need.
Here's a simple formula:
Required String Length = Bow AMO Length - 3 inches
| Bow Type | Bow AMO Length | Required String Length |
|---|---|---|
| Long Bow | 60 inches | 57 inches |
| Long Bow | 64 inches | 61 inches |
| Long Bow | 68 inches | 65 inches |
| Long Bow | 70 inches | 67 inches |
Note: While 3 inches shorter is the standard for long bows, recurve bows typically require a string 4 inches shorter than their AMO length (as mentioned in the reference: "But if you have a 64 inch recurve bow amo. You're gonna want a 60 inch string."). Always double-check your bow's specific recommendations if available.
In summary, measuring for a long bow string involves identifying your bow's AMO length and subtracting 3 inches to find the correct string size to purchase.
