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ACS limbs stability

Started by Piratkey, November 13, 2011, 11:44:00 PM

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Piratkey

Hello everybody

I would like to know what do you think about the ACS bow limbs stability,specialy the TD  model make with the cross sectionnal limb geometry.

Thanks

SveinD

I have shot both the 1pc and 3 pc ACS and they are an amazing creation.
The 3pc TD is super fast and efficient, very stable, smooth to draw, dead silent with NO shock on release.
I am amazed at that bow.

The 1pc i tried was a different story. It had a very comfortable draw but that is where the similarities stopped. I think the problem with it is that the Adcock CS is to efficient for the lightweight riser on a 1pc. It had more handshock than I like and was not as fast as I pictured, though that might be an illusion..
Worst thing about it was the noise it made. Sure it had no silenceres stringed, but the "slap/twang" was louder than a recurve.

It might also be just that particular 1pc, but that's my take on it.

I really like the TD. I've shot it with a 14" and 16" riser, but I'm confident even the 12" is heavy and stable enough for those powerful limbs!
Great Bow!
Centaur 58" Glass XTL 40@28

~Those who believe in telekinetics, raise my hand~ Kurt Vonnegut

Bjorn

Adam and I have been shooting the ACS CX 3pc bows for the past 6 years. We have 4 bows and some extra limbsets. For us the bows do everything we expect..........stable, quiet, fast, smooth-all around excellent bows and great customer service. What was the question?

AdAstraAiroh

I am not qualified to speak to limb stability, but I can evaluate "shootability". The A&H ACS-CX 3-piece longbow is an outstanding shooting bow.  The limbs outperform what you would expect their draw weight to be capable of.  They are quiet, smooth drawing, with no hand shock, and cast both a heavy or light fast arrow. The riser is not picky about arrow spine and is very stable in the hand, with several grip styles available. Finally, they are repeatably accurate and forgiving of form errors more than many other longbows I have shot. All and all, a very versatile performing bow produced by a customer responsive company.

Mark

Ground Hunter

I have two ACS-CX - (53# and 66#) both are outstanding!

**DONOTDELETE**

We just had a pretty good thread going on stability that had all kinds of pro's and con's about different designs.

The ACS long bows with the radius cross section is a perfect example of a bow that many archers may consider vertically unstable.....


 BUT......

They are incredible high performance limbs that you can drive tacks with when you have a good arrow match. and they are rock solid in the torsional stability dept.

Like any high performance bow, this is a bow that you need to pay attention to your set up on. They do not perform well if you get your brace too low.

if you stay within the design specs on set up these are very impressive good shooting bows.

I'm one of those guys that sincerely appreciate a high performance bow, and the ACS flat out does the deed with authority.

My hat's off to you OL.   SMOKIN! bow...   :thumbsup:

Ground Hunter

I should add that both of my ACS bows are 66inch oal. I'm sure length has some influence on stability.

Sixby

The ACS Bows are a great bow and they shoot fast and accurately.

God bless you all, Steve

Terry Green

There is a difference between the Adcock and A&H models.  The A&H model is much more stable.  I've owned both.
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The Whittler

The A&H 3pc is one very fine bow. I don't know anything about stability just how the bow shoots. I would not hesitate to recommend this bow to any one.

**DONOTDELETE**

QuoteOriginally posted by Ground Hunter:
I should add that both of my ACS bows are 66inch oal. I'm sure length has some influence on stability.
Actually.... length has more to do with string angle than it does stability, but it can have effects depending on the draw weight of the bow..

Over all bow length can be deceiving in terms of how the limbs function. long riser/ short limb, or short riser/long limb are the two ends of the spectrum with miles between the two.


QuoteOriginally posted by Terry Green:
There is a difference between the Adcock and A&H models.  The A&H model is much more stable.  I've owned both.
i had an opportunity to shoot one of OL's original designs down in San Diego a couple years ago, and it was different than the A&H.... but it was still a darn good shooting bow.   :thumbsup:

Bjorn

Horizontal stability is easier to grasp for a dud like me; but I don't really know what vertical stability brings to the table.........is that like when you want to use the bow as a walking stick?

Piratkey

Thanhs at all for your answers

All the best

**DONOTDELETE**

Quoteis that like when you want to use the bow as a walking stick?  
:biglaugh:    :biglaugh:    :laughing:

or how bout a pogo stick?

Sixby

Bjorn, You have no idea how many debates I have had over verticle stability. I still maintain that verticle stability at brace has absolutely no effect on shootability.
Why? Because verticle stability can drasticaly change in just a half inch of string twisting,. Much less when the bow is fully drawn.
A bow with practicaly no verticle stability at brace may in fact be rock solid at draw.

So far no one has convinced me differently. Witness the shootability of the bows you mentioned and the origonal EagleWings. Both about the same profiles and both not particualrly stable verticaly. Yet both bows really perform and will shoot lights out accurate.

God bless you, Steve

Terry Green

Kirk...at least I could grab my A&H by the limb tip and it not go off like a rat trap.
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"It's important,  when going after a goal, to never lose sight of the integrity of the journey" - Andy Garcia

'An anchor point is not a destination, its  an evolution to conclusion'

John Havard

Well, as the guy who wrote the ACS patent and who owns it now and who is building them with Mike and Jason at Dryad now I guess I should comment.

ACS bows are high-performance bows.  Like several other R/D longbows I can name, the ACS R/D longbow isn't well-suited to being picked up by the tip but that's not how it was designed.  It's designed to store more energy per pound of draw and deliver a higher percentage of that stored energy to the arrow by wasting less of that stored energy accelerating useless dead limb mass forward.

As a bowyer involved in the field I NEVER comment about anyone else's bows because it's not good form to do so.  However, I think that comparing most truly high-performance R/D longbows (instead of those that make the claim falsely) would indicate that there are similarities in the ability to move the string up and down at brace height.  

There have been three developmental iterations of the ACS R/D longbow limb over the past 8 years, with the latest ones now from Dryad being the most stable yet in my humble opinion.  

The ACS recurve along with a new line of longbow limbs will be introduced by Dryad at Kalamazoo this January.  These new bows will certainly be as stable if not more so than just about any other bows out there, while offering new standards of performance.

2treks

Thanks You John.
I can't wait to see what you and the Dryad crew have at KZOO. See you there.


Chuck
C.A.Deshler
United States Navy.
1986-1990


"Our greatest fear should not be of failure but of succeeding at things in life that don't really matter."
~ Francis Chan

**DONOTDELETE**

QuoteOriginally posted by Terry Green:
Kirk...at least I could grab my A&H by the limb tip and it not go off like a rat trap.
Yup....Those things have NO issues at all in the torsional stability department. and as far as i'm concerned the vertical flexibility is mitigated by the preload. Those bows do not leave much performance on the table at all.

I'm not sure what the efficiency ratting on those limbs are at 10 gpp, but it's gotta be very high.

In terms of building high performance bows, that one is a tough act to follow.

Piratkey

Ok I sure now than ACS limbs from A&H are good on the torsional stability departement,what about their robustness ?
Thanks


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