![]() would it be possible to produce a version with imperial input values for those of us who still live in the stone age. Roy 14/11/07 : an excellent tool but for one thing!. When I find some time, I will take a look at it. Charles: it could be tweaked but it would require two more input variables. THANKS.Īpostolos 03/10/07 : Archimedes: you'd better use one of the other calculator that work on principle of draw weight and arrow weight. Im not the greatest archer but found your formula works for me. John r 26/07/07 : i used your speed chart and checked it against many of the known sight marks that i have and it was accurate for all of them. If you're interested, contact me : bestel (at) ifrance (dot) com I'd like to translate it in french in order to use it on my club website (it would display your translated page inside a frame). Could you please help me figure out how to measure speed of an arrow (point blank) just with draw weight (45 lbs) and arrow weight (385 gr)? I would like to find out my arrow's speed so I could figure out its foot-pounds of energy.īen 17/06/07 : this formula is all well and good but what arrow weight is it going off?īestel 17/07/07 : Hi Apostolos and congratulations, great job ! I was also thinking of doing another version that could calculate your arrow speed loss per meter given all of your sightmarks.Īrchimedes 09/06/07 : Hello. bringing the sight in for longer distances?)Īpostolos 20/05/07 : I think it could be tweaked for that but I have to find that piece of paper that I had all the equations written on. Can it be tweaked to allow for sight marks where the distance between the eye and the sight pin changes (ie. That uniquely determines the speed of the arrow.Ĭharles 15/05/07 : A very interesting program. Perriswood Dick 30/03/07 : I can see how the algorithm accounts for different arrow size/weight but where is limb/r1ser length and draw weight taken into account RLHĪpostolos 01/04/07 : In fact, we don't care about the draw weight but only for the angle difference between the two distances. PS: Joe, you drift program is excellent, it's amazing how good a model of arrow flight you made. Someday I will describe how it is done in a separate page. I used Mathematica to find the solution and it's a formula 4 lines long. Could you place a link to the formula you have used.Īpostolos 22/03/07 : Thanks for your comments! The formula is too complicated to describe here. I am trying to make a ballistic module for bowhunters, like yours but take also Ballistic Coefficient, but I cannot find out how to calculate speed at differents distance. Haller - Denmark: Very interesting program. (anonymous): this is cool! have to measure the distance from eye to scope to make sure it is accurate. Ten out of ten for the relaxing background image. Joe Tapley: Simple and pretty accurate - well done. It's a very good calculator and a good idea.I am in a archery club and i gived your adress web site at my friends and i put it our web club archery It can also compute your other sight marks for FITA and other distances. This is usually something aroundĭraw length + sight extension but it's best if you measure it accurately. Is the distance from your eye to the sight pin. ![]() This program can calculate your arrow speed, given ![]()
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