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View Full Version : IBO speeds VS AMO speeds

airborne
01-20-2006, 08:48 AM
Does anyone know what these stand for and how they are measured. IBO is always a lot higher than AMO. I see several guys say that there bows shoot 290 and above at low draw weights. I guess it is human nature to stretch the speed a little but I think some have passed believable.

By the way IBO is the International Bow Organization which tests bows at max poundage with the lightest arrow possible. The arrow weight is so light that it is on the edge of shooting the bow dry.

AMO is usually 20 to 30 less Why?

Not to be rude guys but if the IBO on a bow is 310 fps, it would have a draw weight of 70# and you will not get 290 thru a chronograph at anything less than max draw weight. We do not shoot the lightest arrow a bow can handle without damage to the limbs. We shoot arrows that meet or exceed the minimum weight designed for a particular bow. Our draw lenghts will exceed what IBO uses which will result in a heavier arrow.

The question is how does AMO test for bow speed.
beeell
01-20-2006, 09:44 AM
Hey airborne, check out this site. It explains it pretty well, but as all of us know everything printed on the internet...you get the idea. But it does sound lagitimate.
http://www.bowhunterchallenge.com/velocity.htm
airborne
01-20-2006, 11:21 AM
Hey airborne, check out this site. It explains it pretty well, but as all of us know everything printed on the internet...you get the idea. But it does sound lagitimate.
http://www.bowhunterchallenge.com/velocity.htm


Thank YOU beeell.


Guys this WEB Site says it all. After reading this site, you will see that I was wrong about some things too. I got some of my info wrong from asking fellow archers. Now you can read it for yourself.

There is nothing wrong with saying " My bow shoots 269 fps". Mine does and I get pass throughs, so do I really need a bow that shoots 290. Draw lenght 29.5, carbon arrow, 63# draw (Darton Bow) It is rated at 60# but cranked all the way it reached 63.

I know a lot of guys that can't shoot anymore due to shoulder and elbow pain. Back in the 70's and 80's draw power is where arrow speed came from. 70#, 80#, and 90# draw weights were common. Nobody ever told these guys what was going to happen to them if they continued to pull so much.

Some need the best and some only want what works. To each their own. I'm just glad we all can still shoot.

Thanks again beeell