My bow is better than yours!

[mg66]

My bow is better than yours ! .... Well of course its not.

This is the best article I have seen on bows, bow myths, bow mechanics and plain ol' physics for quite some time. Its a great article whether you agree, disagree or fall somewhere in between ... http://www.huntersfriend.com/bowselection.htm

[Luke]

Great article...deserved of being a sticky I reckon - in the tech section though ;)

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[Hoyt_Trykon]

Ok guys, im a bit confused. I always thought that the heavier the poundage the faster it will reach the ibo speed and maintain it and a bow exactly the same but with a lighter poundage will still reach the advertised ibo speed but will not maintain it as long and will take longer for it to reach the speed. But after reading that right up, im all confused because it says: The higher the draw weight - the faster the arrow will shoot. So is this saying that even though my trykon is advertised to shoot 316 fps, and mine is set at 70lbs and shoots 316 fps, a trykon set at 60lbs will not reach 316fps because it has a lighter poundage??
can someone set me onto the right thinking path please! lol.

Thankyou
Justin

[Spider]

Hi Hoyt, what their trying to say is there is a standard/formula set up they use to get the IBO rating that all manufactures have to abide by, that is 70lb + 30inch draw + bare arrows weighing 5grains per inch (total arrow weight = 70lb x 5grains per inch = 350grain arrow) all other bow set ups outside of these standards will have a variance on the IBO speed. Still sounds like jiberish but I hope it helps. Cheers

[14ruark]

yeah bbut my bow is better than yours :lol: :lol: :lol:

[mg66]

Look at IBO speed as in HP (or kw for y'all down under :) ) Its a standard which makes it easier to compare one bow to another.

IBO versus AMO is detailed on my web site at http://www.bghi.us/index.php?x=bowspeed.

My bow is rated at 320+ IBO speed. To actually shoot at that speed I would have to be shooting not much more than knitting needles :)

For the 2004 season I have swapped from aluminum shafts to Gold Tip 5575 XT Hunter carbon shafts. That alone has reduced my total arrow weight down from 490 grains to 375 grains and I have gone up from 65 to a 70 lb draw weight ... a drop of 115 grains total weight and a 5 lb increase in draw weight had some great results to arrow speed. The deer wont know what hit them. Here are the real figures:

My bow is setup to the following using Easton XX78 SS 2314 aluminum shafts:

Total Arrow Weight = 490 grains
Draw Weight = 65 lbs
Draw Length = 30"

So how did my Mathews Ultra 2 SoloCam® actually shape up using a chronograph ? ... 247 fps ... !!!

Arrow and Speed Specs for 2004 using Gold Tip 5575 XT Hunter Carbon Shafts:

Total Arrow Weight = 375 grains
Draw Weight = 70 lbs
Draw Length = 30"

Chronograph Speed = 283 fps
Kinetic Energy = 66.71 ft/lbs

[Luke]

What was the KE of the XX78's?

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[NormGunston]

HuntersFriend have put up some de-mystified, very useful info. aimed at beginners. Also, they are excellent to deal with- I bought three Reflex bows through them- dealt with one of the managers personally and he couldn't have been more helpful. Nothing was too much to ask in relation to orders and I have yet to find an international or Australian archery related business that can match their electronic communications.

[mg66]

What was the KE of the XX78's?

Luke, it was also around the 66-67 ft/lb range. The minimum for Whitetail Deer is appromimately 45 ft/lbs.

[Luke]

cheers mate

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