Arrow tuning for my son

[Gobble Doc]

My son (on the forum as "Boy Boy") is 14 and I think is getting pretty good with his bow.  We still have some confusion about tuning arrows.  Would anyone be willing to PM me with your phone number and spend 10 minutes on the phone with us so we could ask a few questions?  He is getting pumped up for turkey and came very close last year to getting one with his bow.  Maybe this year with a little more fine turning.  Thanks for any help. 

[pianoman9701]

Here's a link to match up your son's arrows with the bow:
http://www.basinarcheryshop.com/arrow-shaft-selection-charts

Here's a link for a youtube paper tuning video:

Here's a link for broadhead tuning:

Making sure he has the correct spine for what he shoots, and the paper and broadhead tuning should help.

[Gobble Doc]

Thanks!  We'll start watching and figure it out.  -Neil

[Old Dog]

PM sent.

[DoubleJ]

Crap.  I just spent a lot of time getting my broadheads to hit right and later found out my field points were hitting high.  Now I see that the broadheads were hitting low and I need to tune more.  Crap!

[DoubleJ]

One thing I don't understand though is, if I move the rest up to raise where the BH hits up, why doesn't the field point then raise as well?

[Todd_ID]

One thing I don't understand though is, if I move the rest up to raise where the BH hits up, why doesn't the field point then raise as well?

It does raise both arrows as you raise the rest, but the broadheads move more than field points due to wind planing.  Eventually the broadheads catch the field points, and your tuning is on the money.

[sakoshooter]

One thing I don't understand though is, if I move the rest up to raise where the BH hits up, why doesn't the field point then raise as well?

It does raise both arrows as you raise the rest, but the broadheads move more than field points due to wind planing.  Eventually the broadheads catch the field points, and your tuning is on the money.

When you match your point of impact with both, broadheads and field points, then move your sight so they hit the bullseye.

[jechicdr]

If a bow is in tune, the broadhead and field tip will start out in line with the path of the arrow and as long as the vibration of the arrow (spine) is correct, the arrows should hit the same point.  If the bow is out of tune, for example, if the rest is pointed too far left of tune, then the blades of the broadhead will catch the air and result in an initial deviation further to the left before the fletchings eventually dampen the oscillations of the arrow.  The field tipped arrow will deviate less left than the broadhead tipped arrow and oscillations will dampen quicker.  The correction in oscillation for the field tip is rapid and you may not see any change in the placement of the field tip from that when the bow is in tune, so change in impact point of the field tip may be minimal with adjustments of the rest.  The broadhead will hit left and with a larger variation in group size than the field tip.  Moving the rest to the right (bringing broadhead toward field tip) is usually the correction.  If you move the rest enough to change the impact of the field tip too much, you may be making too large of an adjustment at a time.  Improperly spined arrows will make tuning difficult because the oscillation of the arrow could result in the tip pointing in a different direction than the out of tune direction and changes to the rest in direction you think it should go could make problem worse.

To make improperly spined broadhead and field tip arrows hit the same spot, you would have to by definition be shooting out of tune.  You are just relying on the oscillation of the arrow to make them hit the same general area, rather than the bow shooting the arrows at the same spot.  You sacrifice group size and energy of the arrow.

[Gobble Doc]

I've watched the first YouTube and it made a lot of sense.  We are going to watch the second video tonight. 

[pianoman9701]

I've watched the first YouTube and it made a lot of sense.  We are going to watch the second video tonight.

There are three videos on my first post. One just shows up as a link, the other two imbedded. I'm glad i could be of help!
John

[bow boy]

Doing BH tuning before hunting is a no-brainer essential.

[Gobble Doc]

Hi Pianoman,

Thanks for pointing out the 3rd video.  I would have missed it!  The website looks like it has a lot of information and we will try to scour it.  Thank you for your help.  -Neil

[coachcw]

Always start by tunning the bow . If you need a had get ahhold of denton from db bowstrings . He is very anal about the tune . theres no reason that with the proper spine that both fieldpoints and broad heads wont hit the same.