Hi guys
Do we have some standard for testing bow ?
If we have , please post source or document
Thanks
I don't understand what you are asking?
I asked for standard ,rules...how to measure bow speed ?
It must be a rule ! 50#@28 arrow 9gpp or something like that
(https://scontent-vie1-1.xx.fbcdn.net/t31.0-8/fr/cp0/e15/q65/13701172_1333802093316574_8621739649105955059_o.png.jpg?efg=eyJpIjoidCJ9)
Because this is really funny , look at gpp , just to get high speed
I agree. A rather confusing question.
Blacky Scwartz (sp) has tested with 9 gpp for years, on around 50# bows.
So I'm guessing that would be about as much a standard as there is.
Pete Ward also does some testing/reviews.
Yesb, I know that . But we have IBO rule 70# , 30" draw length ,5 gpp . Is that only rules , standard ?
I would think the IBO rule would apply more to wheel bows, I sure wouldn't want to shoot my bows at 30" and 5 gpp. I may be wrong tho...
Agree with you ! But do we have some similar rule for trad bow , established from some legitimate organization
Not that I'm aware of, but I'm not always up on that stuff.
Ok Kenny , thanks
I will wait , more gangers to reply
IBO/AMO(ATA)standard is more or less for wheelies (who shoots 5gpp on a trad. longbow or recurve?).
I'm also not aware of a speed test standards especially for trad. bows.
Be carefull with Bodniks speed measurements,It's marketing vs. reality!
There is also a trend over the pond using lighter arrows for a flatter trajectory.
Most of the newbies do not hunt and want a good result as quickly as possible. They won't spend as much time as it needs and they thought with a flatter trajectory it's easier to get good results. Many try to compensate the lack of knowledge over the material which will works for a while but not in the end. They have no time to learn from the ground.
It's like: Whereis the machine who can do it for me to get better? It's a phenomenon of our modern society.
The "Bow Hunter Recurve league" in my country has nothing to do with bowhunting equipment anymore.
Sorry, I'm drifting let's get back to topic.
I think a good standard is as Kenny wrote 50#@28" and 9gpp to compare.
Like Blacky and Pete does and most of my buddies!
But anyway, I am more interested how fast my bow is with my personal specifications.
I'm drawing 31", so it is not from interest for me how fast my bow is @28".
just my2cents
I don't know of any rules either. Seems the holy grail as far as speed goes was 200fps at 10 grains per pound at 28". I don't recall anyone hitting those numbers except with hot rod type bows but, I could be all wet and usually am. LOL
Yes, we have an "accepted" standard for comparisons--the IBO/ATA and the old AMO.
IBO) 5 gpp at 30" draw, 70# bow.
The old AMO) 9 gpp at 28" draw
I don't think many of the compound companies even reference the old AMO standard any more.
Thanks Jim!!
Speed/performance will also be affected by things like strings, silencers, nock fit, shooting machine vs. fingers, tuning, arrow matched to the bow, etc.
We have a standard for strings/bow length measurements, but it seems that more ignore it than follow it. Frustrating for sure.
Of course is frustrating ! How to comapre 5 different longbows ?! To buy all and then ?
AMO standart is 9gpp at 30", not 28"
QuoteHow to comapre 5 different longbows ?! To buy all and then ?
Other than going by opinions on message boards, unless you can attend tournaments or rendezvous where you can shoot them...yes.
Unfortunately, data from a test does not cover what I feel is most important in a bow. I value a smooth draw, vibration free release, and a comfortable grip far more than fps or a curve on a graph.
QuoteOriginally posted by hybridbow hunter:
AMO standart is 9gpp at 30", not 28"
I stand corrected. It was/is indeed, 9gpp at 30" draw with a 60# bow.
Before Blacky Schwartz, Norb Mulaney also did a lot of bow performance testing and regularly published the results in several magazines. As I remember, he used something closer to the old AMO standard, about 9 or 10 gpp at a given bow weight. Can't remember if he used 28 or 30 inches of draw.
I started collecting the results that Trad Bowhunter used to publish from Blacky Schwartz' tests. Never did anything with the info and TB quit publishing those tests several years ago. What I do remember is that the performance differences weren't real great when comparing apples to apples. Might have been as much as 15-20 fps when comparing the fastest bow to the slowest, which is a big difference. But when bows of similar design were compared, they seldom varied by more than 5 fps.
Yup...i test mine extensively. I know right what you're getting at. If they hit where im looking, feel great, and penetrate deep....they pass the test... :biglaugh:
These days and ages, speed sells. Its all a bit for nothing in the trad world. Even those who advertise trad bow speeds, often shoot specialized and rediculously light arrow, just to say they got xxx amount of speed. The same goes for compounds, crossbow, and even airguns. They never perform even close to advertising because of the special situations and equipment they use, instead of using hunting or at least a realistic weight for speed ads....but then it dont look near as impressive!
I think you can't compare bows over speed.
The chrono shows only speed and not the over all high performance!
Speed can be great but the over all high performance can be lousy.
"High performance" for me means not only arrow speed. I'm talking over all smoothness of draw, excellent limb stability, and virtually dead in the hand after the shot.
I can't measure a bow I have to feel the bow!
For shure I can measure but ;) I get only numbers.
just my 2 cents
:biglaugh:
Speed is not important for no one here . But everyone like to have speed bow ,why ? Heavy arrow and slow bow , that is winner combination ?
Or is nice to bow have some respectable speed and and heavy arrow ...
For me , speed is not on first place but is important !
Smoothness , smallest hand shock ...and speed .
Speed is helpful to keep the bow weight down and still have the penetration power of a heavier bow. 6 grains per pound at 30" produced 245 fps on a 67# bow I built but that amo number really doesn't tell you anything for hunting weight arrows. Thats why I use 10 grains per pound as a means of comparison for the bows I build and the 67# produced 188 fps at 10 grains per pound and produced enough momentum to hunt big African animals.
i believe it was Howard hill who said, 115 fps + bow poundage, with a hunting weight arrow was the ideal. kinetic energy/momentum. would you rather get hit by a tennis ball at 100 mph or a bowling ball at 20 mph?
its nice to shoot a heavy arrow fast, less flight time means less arch. but i will take a heavier arrow over a faster one any time.
As the great Bill Belichick once said, 'statistics are for losers' (lol).
Just pick the one that shoots good.
Great Bill Belichick?
Go Steelers!
;)
The way I compare 5 bows is to buy all five and shoot them...I have actually bought 5 bows in the last 3 weeks (to add to the 39 I already have)...unlike compound bows which can be made virtually identical there are often considerable differences between individual stickbows that appear identical...if you are looking for simple comparisons stick with shooting wheel bows...if you are unwilling to spend much money do not expect to learn a whole lot
DDave
If you get close enough, speed doesn't really matter so much............just find one you love to shoot!!!
:bigsmyl:
Ok , thanks guys . Wonderful discussion . :bigsmyl: