Originally posted by Black-N-Red
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Arrow Speed vs. Weight
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Originally posted by Black-N-Red View PostMaybe chrono is messed up. I was shooting some arrows the other day & my Full Throttle magically started shooting a 501gr arrow at 322fps. 😎😎😎
It maybe time for me to get a new chrono.
Does arrow spine assist in arrow speed?
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Originally posted by lovemylegacy View PostYeah, maybe. I will try and shoot through a chrono in the near future.
Does arrow spine assist in arrow speed?
No, launch speed is simply a function of an arrow’s weight and the stored energy in the bow being imparted upon it. A 400 spine 450 grain arrow will have the same launch speed as a 300 spine 450 grain arrow shot out of the same bow.
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Originally posted by muddyfuzzy View PostNo, launch speed is simply a function of an arrow’s weight and the stored energy in the bow being imparted upon it. A 400 spine 450 grain arrow will have the same launch speed as a 300 spine 450 grain arrow shot out of the same bow.
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Originally posted by muddyfuzzy View PostNo, launch speed is simply a function of an arrow’s weight and the stored energy in the bow being imparted upon it. A 400 spine 450 grain arrow will have the same launch speed as a 300 spine 450 grain arrow shot out of the same bow.
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Originally posted by Wampuscat View Posthttps://youtu.be/RjZH5Nx38wc
I’ve shown guys this video for years. It’s probably the most informative 10 minutes you’ll get on arrow weight and velocity. I’ve rewatched it a number of times.
Spine changes impact
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Originally posted by enewman View PostI saw a article about arrows that stated that there is no reason to not shoot a stiff arrow and that a stiff arrow of same weight of a weaker arrow would be faster. There would be no lost in fps due to flex. I’ve tried. I never saw a gain
Perhaps a 500 spine 400 grain arrow 150 grains up front
Then a 300 spine 400 grain arrow 125 up front both from a 70# hard cam. Then measure the speeds at 25 yards.
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Originally posted by lovemylegacy View PostWhat calculator did you use?
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Originally posted by rocky View PostJust common sense bow math. Creed has an IBO rating of 328. At 50 lbs, that IBO rating is 320. You lose 4 fps IBO per 10 lbs. So, we start at 320, and since you have a 28” DL, we subtract 10 FPS per inch, so we’re now at 300 fps. Peep and loop cost app. 7 FPS, so now, we’re at 293. Every 30 grains of arrow weight cost app. 10 FPS. Your arrow weighs 118 grains over 250, (IBO for a 50 lb bow), so, rounding up, 120 grains costs 40 FPS. We’re now at 253 fps. Of course, that is assuming that your Creed actually hits IBO speed.
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Originally posted by jds247 View PostJust trying to learn something here.. if ibo is at 30 inches 70 lbs if you shoot over 70 do u add ?
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