what is better>>>>>>>>>>
10-18-2005, 12:15 PM
#3
Giant Nontypical
Join Date: Feb 2003
Location: Jackson, Missouri
Posts: 7,051
RE: what is better>>>>>>>>>>
I'll take a wild stab here that you're meaning the published variance of straightness on carbon arrow shafts. The bigger the number, the higher the variance, so you'll pay more for the shafts that are within .1 of each other as opposed to some that are listed as .6 difference.
10-18-2005, 02:54 PM
#4
Boone & Crockett
Join Date: Feb 2003
Posts: 10,679
RE: what is better>>>>>>>>>>
That is the variances of shafts. Depending on what variance you are talking aboput it could mean one of two things.
#1 is the advertised variance in straightness of a specific grade of shafts. Most shafts are broken down into three grades of shafts. Premium shafts usually have a variance of no more than +-.001 (1 thousandth) inches. This means that the shaft can vary no more than one thousandth of an inch in any one direction. Medium grade shafts are usually +-.003" (3 thousandths) and low grade shafts are generally +-.006" (6 thousandths).
Keep in mind that this number only represents total variance in one direction from the center line. So a .006 shaft can vary as much as .012 inch total. .006 in one direction and .006 in the opposite direction.
Just a note...... the correct way to type it is to have a decimal point and three places after that decimal point. .002 This gets you to the thousandths place rather than the tenths or hundredths place.
#2 is the weight varinace within a dozen shafts that you buy. This is advertised in grains. Most premium shafts will vary no more than one grain within a dozen shafts. Medium grade shafts will vary no more than 2 o 3 grains within a dozen and low grade shafts usually do not have a weight guarantee at all.
#1 is the advertised variance in straightness of a specific grade of shafts. Most shafts are broken down into three grades of shafts. Premium shafts usually have a variance of no more than +-.001 (1 thousandth) inches. This means that the shaft can vary no more than one thousandth of an inch in any one direction. Medium grade shafts are usually +-.003" (3 thousandths) and low grade shafts are generally +-.006" (6 thousandths).
Keep in mind that this number only represents total variance in one direction from the center line. So a .006 shaft can vary as much as .012 inch total. .006 in one direction and .006 in the opposite direction.
Just a note...... the correct way to type it is to have a decimal point and three places after that decimal point. .002 This gets you to the thousandths place rather than the tenths or hundredths place.
#2 is the weight varinace within a dozen shafts that you buy. This is advertised in grains. Most premium shafts will vary no more than one grain within a dozen shafts. Medium grade shafts will vary no more than 2 o 3 grains within a dozen and low grade shafts usually do not have a weight guarantee at all.
