alright guys so well in this week's fill tip we're gonna be using an arrow test
kit to find the perfect arrow for this new bow so a couple of months ago I put
out a very detailed video on tuning where we talked about theory and tuning
we talked a lot about why you're seeing the different results when you shoot an
arrow that's under spine or over spine we talked about influences of tip weight
arrow length static spine versus dynamic spine bear shaft tuning all of that
stuff and so if you're new to tuning I would highly recommend that you watch
that video and so you'll have a basic understanding of how all that stuff
works together for this video we're going to be talking about finding an
arrow and tuning an arrow to a specific length so in the other arrow or in the
other video we talked about shortening the arrow to find that to get to the
point where you have an arrow that flies well but there may be you may have a
specific arrow link that you want to shoot and you might want to do that for
a couple of different reasons one reason is that if you're a gap shooter and you
don't and you have an arrow of a specific length that you want because
changing that arrow link changes your gaps and basically if you change your
arrow length you have to relearn how to shoot that bow and arrow which is not
very convenient and so you might have an arrow of a specific length that you want
to shoot from that bow this is what that video is about so what we're gonna do I
just made this bow this is a 60 inch or 62 inch overall it's about 58 pounds at
28 and a half inches I don't know what this bow is gonna like I don't know
what's one of these arrows is gonna shoot perfectly out of this boat and so
I've got a test kit here it goes all the way from 45 to 50 spine range all the
way up to 70 75 and I think somewhere in here
I know somewhere in here is gonna be a narrow spine
means that this bow likes at this particular length I've got all of these
trimmed they're all the same length and I've got them trimmed just long enough
so that when I come to full draw if I have a broad head on here
when I come to full draw and expand just a wee bit that broad head will touch my
knuckle that lets me know I'm at the same draw length every time and it also
acts as a psycho trigger the same way that a clicker would to let me know that
I am at that point where I want to release that arrow so we're gonna start
shooting down here on these lower spine ranges and we're gonna work our way up
through these this spine range and what you're gonna see is how this the spine
or the stiffness of the arrow influences how these arrows fly out of this boat so
we're gonna start down here at the 45 to 50 spine range and what you're gonna see
is a very significant tail left as this arrow flies downrange and that is a weak
spine indication as we move up to the 50 55 it starts to correct itself
the 55 to 60 is doing pretty well it's still a little bit under spine
as we move up to the 6065 you can see that these are just slightly over spined
now we move up to the 65 to 70 and the 70 75 and you're gonna see that these
are way over spine
all right so as we went through this arrow test kit and shot each spine range
we could see how that was changing and what we found is the 55 the black arrows
here the 55 60s are just slightly under spine and the 60 65 are slightly over
spine and so we need to find a way to take one of these groups of arrows one
of these spine ranges and make them fight fly perfectly out of this boat now
there's a couple of ways that we could go we could go with the under spine
arrows the 55 60s and we could drop down and tip weight so right now these are
160 grain tips all of these arrows have hundred and sixty grain tips if I took
the 160 grains off and went with a 145 or maybe even need to go with a 125 I
could make these arrows fly well out of this bow or we could go with the
slightly over spine arrows and go up and tip weight and so right now as I said
these are 160 s if I went with if I took these off put 190 s on there again I
could make these arrows fly perfectly out of this boat now which way you go
it's up to you if you up your tip weight go with the higher spine you're gonna
end up with a little bit higher total arrow weight which if your bow hunting
could be a great thing if you're more of a target archer and you're looking for a
flatter trajectory maybe you want to drop down and your tip weight and make
these lower spine arrows fly well again it's up to you whatever works best for
your application so this arrow test kit is pretty expansive I've actually got
more spine ranges than I have right here I've got a 40 to 45 and then I've got a
75 to 80 and I think I've got an 80 to 85 now to do this to find the right
arrow for your bow you don't need an arrow test kit that's
this expansive the only reason that I was shooting these real low spine and
real high spine out of this bow is to just to show you
you the influences that spine range has on your arrow flight all you really need
is three or four different spine ranges to find that perfect one the reason I
have such an extensive arrow test kit is because I build a lot of different bows
I give bow building classes I have students come out they have different
draw lengths they want different draw weights in their bows and so I need
something that has a large span in my arrow test kit so that we can find
arrows that fly well out of the bows that the students make now for if you
are just working and trying to find something that's gonna fly well for you
all you really need is maybe three different spine ranges of arrows three
or four different spine ranges of arrows now this arrow test kit came from Andy
Ponce a with addictive archery you can get them from him you can get them from
Three Rivers you can make your own it doesn't matter as long as you have some
different spine ranges well made arrows so if you're just gonna have a couple of
different spine groups that you're gonna be testing with your bow you need to
have an idea of the just the general ballpark or you're gonna be you know are
you gonna be down towards the low end or are you gonna be up towards the high end
for the bow that you're shooting and probably the best way that I can tell
you to figure out what range of spine groups you need to order is just to get
on the three rivers website and on there they've got an a spine chart that takes
into account the type of bow you're shooting your draw length your tip
weight what type of arrow you're shooting and it gives you kind of a
general ballpark now I wouldn't use that as a as a end-all be-all and just order
you know spend 150 bucks or whatever on custom arrows based on that spine chart
I would not do that at all you're probably gonna be disappointed but what
it is useful for is just getting you in the ballpark where you'll know what kind
of test arrows to order you know go to that find what it recommends then order
some above and some below and some right in the mid
and something in there is gonna work especially when you start manipulating
your tip weights along with that there's different spine ranges so in the tuning
video that I mentioned previously I show how I use slow motion video to help me
tune my arrows by getting my wife to stand up on a platform behind me and
shoot directly over the top of me so that I can write read the left and right
arrow flight now I had one of my patreon subscribers Jacob Matt Reynolds send me
some footage of him doing that with a camera behind them slow motion video and
he was just needing some help on tuning the problem was that the camera angle
was off a little bit and so I had to have him redo it and and so if you're
gonna do it this way if you're gonna use slow motion video it's very important
that that camera be directly over the top of that arrow are directly behind
that arrow fly so you can read that left and right arrow flight if it's off just
a little bit to the right or the left it makes it very difficult to read that
arrow flight so like I said if you're gonna use that method make sure that
that camera is directly over all right guys so that's gonna wrap it up for this
week now in a future video I'm gonna be
produced in a much more comprehensive guide to selecting the perfect arrow for
your recur of your longbow self bow whatever it is that you're shooting so
if you're not subscribed to the channel go ahead and do that hit that little
Bell icon so you get a notification when I upload those new videos and with that
we'll see you next time