[Ed Ashby]

in reply to: One fletch, two fletch, not so new fletch. #28705

https://www.tradbow.com/public/310.cfm

Ed

[Ed Ashby]

in reply to: 30% efoc bare shaft broadhead test #15032

Smiley1 wrote: The amount of fletching needed to stabilize a broadhead is minimal. … Steve

Right on, Steve. Even though the tuning isn’t yet ‘perfect’ on those arrows the video still shows just how little fletching stabilixation is required to overcome the broadhead’s windshear on an arrow with extremely high amounts of FOC. Any amount of fletching stabilization above what is required to overcome the broadhead’s windshear effect, under all wind and shooting conditions, is merely making noise and detracting from the arrow’s downrange performance.

Ed

[Ed Ashby]

in reply to: Cat Quiver #13653

The cat quiver is what I’ve used the most. Great quiver for the stalking bowhunter.

Ed

[Ed Ashby]

in reply to: feathers #51925

colmike wrote: Another thanks to Joe and George at Tuffhead –great customer service even when they are on the road.

If you haven’t tried them yet you can get a pack of 12 feathers from Joe for a few bucks. Well worth the time and hassle of stripping those cap wraps now I have the rest of the dozen to do:D

Mike

[Ed Ashby]

in reply to: feathers #24272

vintage archer wrote: CPBLY ON SECOND THOUGHT WITH THE TURKEY BEING FROM TENNESSEE AND HAVING FED ON SOUR MASH HE MIGHT ALLOW IT :D:D

That warrants another – Ed

[Ed Ashby]

in reply to: feathers #22157

[Ed Ashby]

in reply to: How Forgewood shafts were made #21137

Spot on Timbow. There’s no doubt that I’ve killed more game with Forgewood shafts than any other shaft material, and I never damaged a Forgewood shaft on impact with any animal tissue(s). In retrospect a measure of their effectiveness was that they combined two of the top three ‘performance factors’; structural integrity and EFOC. The Forgewood shafts also had small diameter and weight well above the heavy bone threshold. I still rate it as the best and most effective wood shaft I’ve ever used. I’d rate the tapered hickory shafts I use to get from Troy as the second best; and not far behind the Forgewood shafts in performance.

Ed

[Ed Ashby]

in reply to: Book on FOC and compounds? #42548

Yes. that’s Jeremy’s book. Editor/Publisher suggested additions are being included into the text at the moment, so the book will be even more expansive. Look for the book to be available in the spring of next year.

Ed

[Ed Ashby]

in reply to: Book on FOC and compounds? #38822

I’ll see if I can find out the current status and get back to you when I have any info.

Ed

[Ed Ashby]

in reply to: Anyone else see a trend here ( different arrows momentum) #24045

The Heavy Bone Threshold is not a precise function of either the KE or Momentum. Most arrows carry enough KE and Momentum to breach a heavy bone, if that force and energy is applied to the bone long enough. The Heavy Bone Threshold is a function of how long the arrow maintains its ‘forward push’. It’s the Time of Impulse that matters, i.e. how long the arrow is able to continue ‘pushing’ on the heavy bone, after impact. That’s a function of the arrow’s weight.

The heavier the arrow the slower it loses its velocity and the longer it can ‘push’ against the bone. The arrow has to ‘push’ on the bone for a long enough period of time to overcome both the movement of the bone at the attachment and the flex of the bone. Only after as bone has reached its limit of movement can the arrow begin to breach the bone.

The data indicates that, to consistently breach a heavy bone (with any broadhead having a MA of 2.6 or more), the amount of arrow weight required to attain the necessary Time of Impulse is at, or very, very close to 650 grains.

Ed

[Ed Ashby]

in reply to: Little Blackie takes a dirt nap #17419

Smithhammer wrote: King – as I read back through this thread (and pick my jaw up off the floor after looking through the pics again) one thing jumps out at me – your arrow weight is just over the magic “650gr. bone-breaking” threshhold, but not by much. And yet the damage is obviously huge.

I’m assuming you’ve probably experimented with some arrow setups that are significantly heavier at some point, and I know that there are other variables to take into consideration as well, but I’m curious – did you find that the gains were negligible beyond 665 gr, and that there wasn’t much need for an arrow a lot heavier than that? That sure seems to be what the pics suggest…

Awesome “King” pic, btw.

Smith, I shot my last Asian buffalo with an UEFOC, 655 grain arrow having 31.4% FOC. It broke ribs in and out and stuck 26″ of arrow out the off-side. He was a really big bodied bull and I got the best penetration I’ve ever had when using that particular longbow on a BIG, trophy-class buffalo bull. That’s only a single shot so can’t be used as a ‘consistent outcome’ indicator but I used that arrow setup because, in it’s testing on freshly downed buffalo, it equaled the Minimum, Maximum, Average and Median penetration test-shot results of the very best arrow setup I had previously tested (from that longbow) … which was and EFOC (20%) arrow 312 grains heavier. (Please note that several other EFOC arrows, at higher FOC but lighter weight, also came very, very close to equaling that 967 grain, 20% FOC arrow, but did not FULLY equal it in the testing.)

Ed

[Ed Ashby]

in reply to: Little Blackie takes a dirt nap #17399

vintage archer wrote: When I started to manufacture the TuffHead I sent a broad head to Dr. Ed Ashby for him to critique 8). He said (paraphrasing) that the broadhead really needed to be tested on a large animal like Asian Buffalo or a large bore hog which he considered to be as tough. He new David (KING) and thought maybe I could convince him to test the TuffHead on those California Giant Hogs :

And I will stand by all of that! King IS truly the King of BIG hog hunters … and, while the heavy bones of elk, moose and big bears would be good test targets, as would those of bison, no one gets to shoot enough of those for them to be possible test subjects. I have no doubt that the Cape and Asian buffalo are the king of test animals but I doubt that anyone will ever again have access to the number of buffalo that I had to test on, so that leaves the BIG boars as the best available test animals and King has more access to BIG boars than anyone I know.

Dave, there’s a recent report of a large, bull elephant shot with a 1200 grain arrow on which the broadhead, insert and steel internal footing detached from the shaft at the point where the entrance rib was breached. The 600+ grain ‘point’ (point plus insert and steel IF) carried on to traverse the entire thorax, coming to a stop against the bone of the off-side shoulder; that’s better than 5 feet of penetration for the ‘point’ alone. The shot was quickly fatal. I was amazed by that result.

King, man you have come a long way in documenting your shot results. Those are great dissection photos. Well done, my friend!

Ed

[Ed Ashby]

in reply to: Paint instead of wraps? #30356

Smithhammer wrote: … have you tried shooting with a bright, 4x AA fletch and nock combo? I find that I have no problems seeing my arrow in flight with yellow, orange or pink fletching and a bright nock color.

That’s my ‘cure’ too. I prefer the ‘day-glow’ yellow fletching and nocks. Even with my ‘old eyes’ I have no trouble seeing the arrow’s flight/impact, even in low light.

Ed

[Ed Ashby]

in reply to: Wounded Warrior Project #16058

Fantastic!

Ed

[Ed Ashby]

in reply to: EFOC bows #62201

kirkll wrote: The key to having a high performance bow shoot well is stability. Vertical stability is not as critical as torsional stability, but desirable never the less. Torsional stability in a high performance bow is absolutely critical. This is what keeps those limbs tracking straight.

That’s spot-on. Todays choices in in high performance bows can offer the best of both worlds. That wasn’t the case ‘back when’. I was very impressed with the stability, and the ease with which I could shoot, the ACS-CX I was loaned for use in the testing. Couldn’t fault the stability of that bow at all.

Ed

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