Chrono speeds for bows

[MCS]

How far do you stand from crono when testing. Thanks Mike.

[Jason R. Wesbrock]

Originally posted by John Havard:
Just about the only way to shoot lighter than that is to dry fire your bow!!

I've done that too (on accident, of course).   :D  

Seriously though, some bows can handle it, others can't. I wouldn't shoot that light with a wood bow, but with a strong aluminum riser and FITA limbs I wouldn't hesitate. I figure if FITA shooters can run tens of thousands of arrows that light, it's not a big deal.

[R H Clark]

I have heard of FITA archers shooting 5gpp for 100,000 plus shots.I haven't personaly seen it but have read it from different sites.

6gpp is the safe limit DAS put on his bows so 6.67 should be no problem.

I shoot 6.5 from my DAS Elite for targets and without silencers it shoots 218 fps.I use 4 silencers because I don't like to scare the other trad guys I shoot with, and get 208 fps.

I would not reccomend you shoot that light an arrow in a bow not designed for it.Nor do I hunt with that light of an arrow.

[Jason R. Wesbrock]

Originally posted by MCS:
How far do you stand from crono when testing. Thanks Mike.

Usually about 5 or 6 feet. I've thought a time or two about shooting throug a chrono at 20 yards just to see how much speed is lost at that distance, but knowing my luck that'd be a rather expensive shot.

[overbo]

I had a Habu recurve that was 61lbs@26'',my draw legnth that shot a 400gr arro @207fps w/ silencers and a 16 strand 97 string.Shot a 525gr arro in the high 180's

[Jason R. Wesbrock]

As far as longbows go, my 64: Thunderstick MOAB shoots 210 fps at 8 gpp.

[Danny Roberts]

Not to slam anyone but I thought the FPS and the techno. items were not in a trad. guys' interest but good luck with your research.

[Joseph]

If I am remembering correctly when I got my last bow from Dick Robertson I put it in his shooting machine that he had set up just to see what it would do.  It is 64# @ 29 inches and shot a 720 grain arrow 186 fps and a 500 grain arrow 220 fps.  That shooting machine had a release on it so I imagine that with a finger release it would be about 5 fps slower give or take.  I was happy    It kills stuff good!  Joseph

[MCS]

Thanks Jason.

[Legolas]

It all seems antedotal. We need an independent study don't we?
paul

[O.L. Adcock]

Pseman, "Not a lot of difference in all of the bows on Blacky's list. The difference between the fastest and slowest is only 10-12fps. I wish there had been a few "cheap" bows in there for comparison.

There's 20+fps difference between the best recurve and worse longbow. For every 2 fps difference between bows under those conditions, the "poorer" bow will need 1 pound more draw force to match the other. 10 fps is a 50# bow shooting the same arrow as hard as a 55#. FPS and draw weight have direct parallels. If it didn't we could hunt elephants with 20 pound bows.

Same thing Danny, Do you want to get 40# performance out of your 60# bow? I doubt it....O.L.

[StanM]

Originally posted by Jason R. Wesbrock:
 

Originally posted by MCS:
How far do you stand from crono when testing. Thanks Mike.

Usually about 5 or 6 feet. I've thought a time or two about shooting throug a chrono at 20 yards just to see how much speed is lost at that distance, but knowing my luck that'd be a rather expensive shot. [/b]

Hey Jason,

I've built a two-ply "shield" for my chrono out of 3/4" plywood for just that reason.  Very interesting to get speeds at 10, 20, 30 etc. yards.  I use blunts for chrono reads anyway, because they are supposed to be the most accurate for measuring speeds.

Stan

[John Krause]

Jason,

I can't believe that Black Bear Warf isn't shooting faster than that. Damn! 60 @32 with a 400 grain arrow!

[Jason R. Wesbrock]

John,

I was a little surprised too. With better limbs it'd pick up a few fps, but I'm content. Besides, the last time I owned a recurve that forgiving it was a Hoyt Avalon target rig, so that really says a lot for Bob's workmanship.

[axehind]

Jason,

I can't believe that Black Bear Warf isn't shooting faster than that. Damn! 60 @32 with a 400 grain arrow!

I believe Bob G is shooting in the 220's with his. I dont remember his arrow weight, I think it was in the 300's. The draw weight was in the 40's.

**Disclaimer: This is all from memory**

[Legolas]

this is from the Morrison Website on the new ILF
LONGBOW:

"Chrono Tests on Longbow limbs:

48# @ 28” 432 grain arrow

191.6 fps average 6 shots"

That is impressive!

Paul

[HATCHCHASER]

From the Black Swan website...

 6 grains per pound 270 grain arrow..242 fps
 9 grains per pound 405 grain arrow..211 fps
12 grains per pound 540 grain arrow..182 fps

Bow was drawn to 45lbs. @ 30".  Now that is fast.