Why you should know about Dr. Ed Ashby.
Dr. Ed Ashby, is an avid hunter and writer. In 1985, Dr. Ashby traveled to Africa and performed extensive testing on almost three dozen different broadhead designs. Testing included fixed blade steel, replaceable multi-blade heads, and also a few semi-custom heads. Dr. Ed Ashby's has since then completed 30 years study of arrow performance and broadhead lethality. In his studies he has strived to apply scientific principles to questions that have confounded bow hunters for decades, and for that we should all be grateful.
Dr. Ed Ashby, has hunted with both gun and bow. He
began bow hunting big game in 1958 and has had the opportunity to meet and
hunt with many of the great bow hunters of the past... Howard Hill,
Ben Pearson, and Fred Bear. He has hunted extensively in North America
and Africa and has shot several hundreds of animals with bow and arrow. These animals covered a wide spectrum
from small game to white
rhinos. His favorite longbow, a 94# bamboo bow he built in 1980, has
accounted for over 300 big-game animals.
Dr. Ashby has a wealth of bowhunting experiences to draw from. This is supplemented by an enormous data base he has collected over the years, on the effectiveness of various bow hunting equipment.
In 1985, Dr. Ashby conducted, in Natal Provence, South Africa, what is still the most extensive formal evaluation of broadhead performance on game animals. His research data is used by several of the U.S. States and foreign countries in hunter education programs. He is the author of numerous technical hunting-related articles that have been published in the U.S. and internationally.
In 1994, Dr. Ashby retired from the U.S. Public Health Service and moved to Africa to enjoy the continent's spectacular hunting and to help expand the bowhunting opportunities in that region. After years in Africa, Dr. Ashby, for the present, resides in the USA where he continues his research and writing.
Dr Ashby is recognized worldwide as a leading expert on broadhead design and performance. By incorporating Ed Ashby’s findings, and our own innovations, Tuffhead™ has resulted as the ultimate broadhead design. Built like a Sherman tank the Tuffhead™ is made tough and strong to plow through bone and tissue. The TuffHead™ flies faultlessly and is well suited for a weight forward of center (FOC) and Ultimate Extreme Weight Forward of Center arrows (Ultimate EFOC). The single bevel cutting edge design exaggerates the wound channel, providing good blood trails. Whichever bow you chose, traditional, primitive or compound bow you can be confident in its’ killing power using the Tuffhead™ broadhead.
Dr. Ashby's studies have had positive effects on the archery world resulting in several new broadheads to be introduced into the market incorporating his findings, and existing broadheads being altered to reflect his research results. Dr. Ashby has graciously allowed us to publish his studies. for educational purposes, on this website, and we really appreciate it!
We encourage you to read the Ashby reports below to better understand what happens when your arrow meets your target. Take them in order. They are easy to read. and you'll be a more informed hunter from the experience.
- 1. "Broadhead Performance"
- 2. "Arrow Lethality"
Part 1 Introduction and the need for Knowledge
Part 2 Broadheads
Part 3 Hits into Kills
Part 4 Physics of Arrow Penetration
Predicting Arrow Penetration on Real Animals
3. 2004 Updates
- 4. 2005-6 Updates
Part 1Tip Design and Edge Bevels
Part 2 Arrow Shafting, Shot Placement Shooting Angles
Part 3 Benchmark Broadheads
Part 4 Extreme FOC Arrows
Part 5 Summary of Average Penetration
Part 6 The Heavy Bone Threshold
- 5. "Momentum, Kinetic Energy and Arrow Penetration"
- 6. 2007 Updates
Prologue to the 2007 Updates : Understanding FOC
Part 1 Revisiting KE & P
Part 2 Misconceptions
Part 3 Internal Footings; Extreme FOC and the 82# Bow
Part 4 Extreme FOC: Penetration Enhancing a 54# Longbow
Part 5 Extreme FOC's Demonstrated Advantage
Part 6 Broadhead Tests
Part 7 Angle Of Atttack
Part 8 Penetration Enhancing Factors
- 7. "Why Single Bevel Broadheads"
- 8. "Getting an edge on Success"
- 9. "Papua New Guinea's Bows and Arrows"
- 10. 2008 Updates
Part 1 Heavy Bone Threshold
Part 2 Comparison of EFOC Arrows with Commonly Used Arrows
Part 3 Arrow Force and the Heavy Bone Threshold
Part 4 Performance of a Penetration Enhanced, Above Threshold Ultra-EFOC Arrow
Part 5 Ultra EFOC vs. Higher Mass Lower FOC
Part 6 How Much Does Increasing FOC Affect Penetration
Part 7 Ultra-EFOC and Arrow Shaft Structure Integrity
Part 1 Lethality Update
Part 2 Lethality Update
- Dr. Ed Ashby and his Broadhead Lethality Studies
- Ashby .pdf's
- Ashby Jan 2012 Kalamazoo, MI
- Game Animal Anatomy
- Archery Formulas
- Selecting the Bevel
- Edge Maintenance
- Tuning the EFOC &
- Single Bevel Discussions and Opinions
Links of Interest