over bowed or stack?

[SERGIO VENNERI]

definitely overbowed!

[Blaino]

What's 90 degree?? I don't know what that means.

I'll also add that at 10-12 yards types tree shafts were touching. At the end of the video I point to the target to get my wife to show the group but she cut it off....

[mmgrode]

Blaine, your string angle looks fine...no stacking from what I could see. I'd try a lighter bow and see if that's the problem.  I can tell you from experience that too heavy a bow can lead to bad habits that are hard to break.

[Raging Water]

Gents,

I may have to disagree here. The man is 6'4" with a 30" draw, perhaps more. I don't think he is over bowed. Look at him. He is a big strapping young dude.

I think he needs a Longer Bow.

It is a JD Lund bow. I have love JD's bows. I have a Mojostick that you will have to pry out of my dead hands.

But I ran up against a JD Lund 62" 112# at 28", that I could not draw.

I bet the 62" bow stacks like a Mutha at 30".  

Put a 68" longbow in his hands, I think he could pull 65# all day long.

My 2 cents.

Matt

[**DONOTDELETE**]

I agree Matt.... a bow doesn't need to hit 90 degrees before it starts stacking.... if you watch that video in slow motion you can see the pressure on the fades just after 28". i down loaded this into an editing software and looked at it frame by frame.... the bow is stacking.IMO

I'd bet good money she jumps 6-7 pounds in the last two inches.

i sent you an email with that edited clip Blaino. Kirk

[**DONOTDELETE**]

this is a two frame video. you'll need to watch it a half dozen times to see what's going on here. watch that lower limb when he drops the string.


 [/url] [/IMG]

[Raging Water]

Originally posted by Kirkll:
I agree Matt.... a bow doesn't need to hit 90 degrees before it starts stacking.... if you watch that video in slow motion you can see the pressure on the fades just after 28". i down loaded this into an editing software and looked at it frame by frame.... the bow is stacking.IMO

I'd bet good money she jumps 6-7 pounds in the last two inches.

i sent you an email with that edited clip Blaino. Kirk

Kirk,

I think this may be the first time anyone has ever agreed with me. And it is great that it is a Bowyer. I will mark it on my calendar.

I would be curious to see him shoot a longer “longbow” or a longer “recurve”.

Matt

[Blaino]

put one in my hands and i'll shoot the heck out of it!!!  

[**DONOTDELETE**]

Her ya go Blaino... This shows you two different bows and the different string angles. the recurve with the sharper string angle is just starting to stack up.

The thing to look at here is where the limbs are bending.... typically as a rule of thumb the string angle dictates when the bow stacks....

BUT.... How the limb loads up depends on the geometry of the limb design, the length of the "working portion of the limb", and where that working limb section is located.


You do not need a longer bow at all.... just a bow that is designed to draw to 31-32" without staking up on you. Both of these bows are being drawn to 29". The lower bow is only 60" long and that design draws to 32"  

 

 

[Raging Water]

Okay, I will modify my statement according to Kirk's comment.

You don't need a longer bow, you just need one designed for your draw length.

Matt

[monterey]

I find the behaviour of that lower limb to be very strange.  :confused:    Is it really leading off against the upper limb as much as it appears.  Wonder what that says about the design of that bow?

Kirk, you make an excellent case for the bow stacking but I'd still like to see an fd curve on it.  Your pics of the two recurves are especially enlightening.

When I look at the video and pause it, the angle appears way under 90 deg.  But, the cant of the bow could give that appearance.

[acadian archer]

sit on a chair, lift your feet slightlyoff the ground and draw it back. If you can pull it back you're overbowed

[rrowslngr]

So if your not overbowed you shouldn't be able to pull the bow  back with your feet off the ground. That makes no sense to me?

[Hud]

Could it be too much weight, if your tired after 3 doz arrows. It is the weight. As hard as it may seem, it takes time to work up in weight. First, shoot every other day, or rest two days. Shoot for form only, without a target. Sometimes targets force you to think about aiming, when you should be working on form as you build up to a heavier bow. Otherwise, your reinforcing bad habits.

To work out with a heavier bow, without an arrow, draw back 12", stop, then continue drawing to 18" stop/hold, then to full draw stop/hold. Reverse the process letting down. Repeat 3-5 times RH, then LH. If it is hard, then you are looking at too much weight, and you should repeat this exercise, no more than a few times a week.  Increase it gradually. Be conscious of any pain in the shoulders, or elbows on off days,or after a day of rest. Rest is important, that is when the muscles gain strength. If you lift your arms above you shoulders, or rotate and feel pain, stop. You may experience rotator cuff impingement if you try to work thru the pain. Rest and don't shoot until, it feels better.

[Raging Water]

Originally posted by rrowslngr:
So if your not overbowed you shouldn't be able to pull the bow  back with your feet off the ground. That makes no sense to me?

Okay, I tried the feet off the ground thing. First I drew a 60# while standing, then sitting with feet off the ground. No difference.

Then, I drew an 85# bow while standing, then sitting with feet off the ground. No difference. I will string up a 100# HH in the morning and try that.

Matt

[rrowslngr]

If I had a 100# bow I don't think I could draw it sitting or standing.   Your a beast Matt!  I'm glad someone else didn't get that theory.

[Raging Water]

Okay, did the 100# bow thing.

100# is not that easy to draw standing, much less sitting.

Pulling my feet off the ground just made it awkward. Doable, but awkward.

Matt

  LOCKED AT THE REQUEST OF THE AUTHOR