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in reply to: King Kong is Coming #45185
Troy so what does King Kong have over Fronkinsteen and is King Kong any relation to Kingwouldbe.:lol:
Sorry David D I could not pass that up even after thinking about it twice. :lol::lol:
in reply to: "What you talking about Willis" #38490:lol::lol::lol::lol::lol:
in reply to: "What you talking about Willis" #37860King, see what you got started with the decoder ring now we will all have to have one………………………..
I think that the PNG arrows are amazing . Those natives must have been techies in another life 😀
in reply to: "What you talking about Willis" #37712I don’t know were you guys come up with all this stuff decoder rings and stuff like that:D
I was feeling a little sheepish because I sent Troy a email yesterday about wood arrows but as I read on I dont belive it was me he was talking about. I don’t remember him telling me to figure it out myself! Maybe I missed that I dont remeber everything.:D
Any way you guys are good for a laugh:lol::lol::lol:
in reply to: A long look at fletching and EFOC #33416Keep it up you mad scientist. BHFOC might be something for Ripley’s record book .I hope some one makes it. It would be interesting to read the reaction to that on the other sites.:D It would blow their minds.:D
in reply to: Speed-quartering an elk #26332Great video! Thanks David for posting it
in reply to: INSTRUCTIONAL DVD??? #26318Great Video! Thanks David for posting it. This post was ment for the elk video::oops::D Carry on dont let me interrupt you:
in reply to: PBS and Portland in March? #9473David Petersen wrote: WIcanner — thanks for mentioning that Doc Ashby will be giving a presentation at K-zoo this year. It’s not just a review of the basic results of his studies, which we’re all familiar with by now, but breaks new ground. In conjunction, Ron “Sharpster” Swartz of KME will give a sharpening seminar.
It would be tremendously fun and useful if someone would video these two presentations so we can post the links here for all to benefit from. Dave
Troy Breeding will also be part of the K-zoo seminar.He will be discussing arrow tuning and FOC arrows .I am really looking forward To meeting Dr Ashby along with Troy and Ron.
in reply to: You can hangup the straight jacket #62049dwcphoto wrote: Hi Joe,
A question about your momentum chart. I have not chronographed my arrow, so I just wild guessed at a speed, 150, and entered my arrow weight 560g, and got .373. So what does that mean?? Is that somewhere in an Ashby report?
Thanks for the calculator. They really help.dwc
David,Yes Dr Ed explains this in one of his articles you can find it at http://tuffhead.com/ashby_pdfs/ashby%20ours/PDF%20Momentum,%20Kinetic%20Energy%20and%20Arrow%20Penetration.pdf.
Momentum is concept that is hard to understand. The two variables are mass and speed. The heavier the object the more momentum it has. Momentum is why the driver of a car applies the brake to stop the car rather than just taking his foot off the accelerator. The car has gathered momentum and will continue to move forward after the driver stops accelerating it. The greater the mass of the object, the more the momentum. It is harder to stop a large tractor trailer than it is a small compact car. Freight trains take much longer to stop than a short passenger train.
The measurement of momentum is the slug. A slug is equivalent to 32lb ft/sec . The higher the value in the formula means your arrow has more momentum than a arrow with less slugs. This is an over simplification.
in reply to: New heavyweight Tuffhead is here #59279David Petersen wrote: Rick — I’ll drop you a pm or give a phone call so we don’t bore everyone with my personal stats. Much thanks.
King David — One thing about your hog kills (and the deer pics I’ve seen as well) is that you never have to hang ’em and cut their throats to know they are completely bled out! 😛
David and Rick,I cannot speak for everyone but I was not getting bored by your post.Actually I was learning some things.:)
in reply to: New heavyweight Tuffhead is here #59273Kingwouldbe
David,
Congratulations. I think you have the first kill with a TuffHead 300. I am sure that will gain a spot in Ripleys.:D
Well at least in my book:)
GIVE THAT MAN A CIGAR:D:D
Again congratulations
in reply to: New heavyweight Tuffhead is here #56627Dave, I know Dr. Ashby has talked about using Forgewood shafts in the past. I believe he was able to attain FOC in the 20% range. I know nothing about Forgewod shafts other than that. May be you already have used them or someone here has had experience with them.
THE FUN BEGINES:D
in reply to: How were your Coues' deer hunts,Mr. Petersen? #54671David,congratulations on your nice buck. Glad to hesr not more than yor pride was hurt on the fall,
Welcome back!:)
in reply to: You can hangup the straight jacket #52538Troy Breeding wrote: Thanks Joe,
That does make it alot easier.:D
Troy
Troy just received a email from Dr Ashby informing me that the calculator is not correct…..It is right now……He did not mentioned your name but I figure there are not many that could see or have the interest to tell it was not correct.If you caught it Thanks! If it was some one else Thanks to you.
Any way all is good:D http://tuffhead.com/education/formulas_momentum.html
in reply to: You can hangup the straight jacket #50516Troy Breeding wrote: Scout,
If I can swing it this spring I plan to see what the “Airhammer” will do.
I also did alittle speed testing with my own chrony afew minutes ago.
The 992gr arrow shot 136FPS average at my 29″ draw from my 55@29″ recurve.
I also tested a 803gr 31% arrow that went an average 148FPS.
Along with those arrows I tested my 700gr 33% hunting arrows and they averaged 159FPS.
Now I have to look up Ed’s notes so I can figure my mominium of each arrow.
Troy
Troy if you visit http://tuffhead.com/education/formulas_momentum.html
there is a calculator to figure momentum .It makes life easy:D
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