10-18-2007, 02:48 AM #1
Check your bows speed using this chart...
click on this link and if you know your arrows total wght than only fill down to the red...can't believe how accurate this thing is...if nothing else..it's fun to mess with.bucklemke.com/ke/ke.php
10-18-2007, 11:27 AM #2
Good chart and would get you in the ball park, but one draw back is the assumetion that bow company advertise true IBO speeds. Company are getting better at it, but I still use a cronograph to get true speed. The placement of spped nock on the string can change your fps as much as 5 to 6 fps alone. Good tool to use, but for true speed use a cronograph. I have heard people tell me their bow shoot some many fps, and I ask how do you know and they normal come back with the IBO is etc... So I pul out my cronograph and find the true speed and it is normally slower by about 10fps on average.Bob
If I can't hunt in
heaven, I don't wanna go
Shoot straight, and aim
for the 12 ring.
10-18-2007, 11:36 AM #3
10-18-2007, 11:55 AM #4
I must of done something wrong. my bow is shooting 314 with a 421 gr arrow according to the chart. but the crono I shot through said 310. but it is close.No if's and or but's Just Maybee.
10-18-2007, 12:18 PM #5
10-18-2007, 01:04 PM #6
10-18-2007, 01:26 PM #7
- Join Date
- Jan 2006
This is pretty accurate. It hit my hinting bow on the nose according to the crono that I used which is 293. My target bow it was 2 fps high it shows 301 and the crono shows 299.
10-18-2007, 01:55 PM #8
That is kind of a cool deal there. Thanks for the info.
10-18-2007, 02:05 PM #9
Calculated at 288. Through my chrono 286, 286, 287. (Last time I checked)
My chrono must be right-on also. On second thought, maybe not.
Last edited by timberghost; 10-18-2007 at 02:15 PM.I CAN'T SEE YOU, AND I CAN'T HEAR YOU, BUT I CAN SMELL YOU AND YOU WON'T EVEN KNOW I WAS HEAR!! IT'S TIME TO DISAPPEAR!!
THIS IS MY HOME. I LIVE HERE AND I CAN TELL IF SOMETHING IS OUT OF PLACE JUST LIKE YOU CAN TELL IF SOMETHING HAS BEEN MOVED ON YOUR BOOKSHELF!! I ONLY COME OUT AT NIGHT TO EAT!! AT THE SLIGHTEST HINT OF YOUR PRESENCE, I'M GONE!! EVEN IF I MAKE A MISTAKE YOU SHAKE UNCONTROLLABLY IN MY PRESENCE AND COULDN'T GET THE SHOT OFF IF --THUMP--SWACK!!
10-18-2007, 03:34 PM #10
My trykon shoots 280 through the chrono and I just guesstimated string weight at 15 grains and the calculator came up with 279...... seems good to me, thanks for the link now its in my favs!Hoyt Trykon-390 gr.@280fps.
Truglo Tool-less / 5-.019" pins
WB/Double STS/S-Coil Stab./CSS Tunerz
5575 GT XT Hunters/G5 Tekan-II/Tru-Ball Copperhead
10-18-2007, 08:47 PM #11
Not bad...I shoot 271 and it came up with 269...
10-18-2007, 08:52 PM #12
Like i said...just something to play around with.Helps though if you don't have access to a chrono....gives ya an idea.one of my bows it showed 268 but i've chrono'ed it at 263....i may be off on total wght of string items that i gave.
Last edited by IChim2; 10-18-2007 at 08:54 PM.
10-19-2007, 09:30 AM #13
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