question for the tuning gurus?

[Button Nubbs]

Just got a new string and cables set and am trying to set up my 82nd airborne by myself for the first time. I got the string and cables on and my ata is right where it should be 36 1/4" top and bottom tiller come out at 9 1/2", brace height is supposed to be 6 1/8" but it is measuring just under 6 3/8". Am I splitting hairs here? Is there a way it can be fixed? Its going to get a few shots through it tomorrow, then its gonna go on the draw board to check the time/draw length. Any ideas?

Thanks

[xXx Archery]

Did you loss or gain lbs?

[Button Nubbs]

I don't have a scale yet so I couldn't tell you, but I had the cables almost completely un-twisted last night and the brace got better but it was still a little more than 1/8" long. Ata was still dead nuts on.

[Todd_ID]

I'd be less inclined to worry about brace height than any of the other things.  As long as your ATA, timing, tiller and draw length are right on, then the bow will still fling an arrow properly.  You just get a bit of free forgiveness, in my opinion. 

[Button Nubbs]

Thats kind of what I was thinking todd. I'm kinda wondering if my cables are too short. If they are but ata is still on will I loose poundage? I know I need to put it on a scale to find out for sure but I won't be able to get to one for a few days.

[hughjorgan]

Thats kind of what I was thinking todd. I'm kinda wondering if my cables are too short. If they are but ata is still on will I loose poundage? I know I need to put it on a scale to find out for sure but I won't be able to get to one for a few days.

Did you measure your new string and cables to see if they are the correct length?

[Button Nubbs]

Yea I did, the cables were a little short, I figured they would stretch out a little bit when I put them on the bow. They were really stiff in the serving areas so I'm not sure I got a super accurate measurment

[Big10gauge]

Shoot it about 50 times or more, then measure it.

[Lowedog]

With out a scale or a draw board to measure draw length it will be tough to know how close you are.  I would worry more about draw weight, draw length and timing than any of the other specs.  There is some tolerance there for those specs.   

[Button Nubbs]

I have a draw board and timing and draw are spot on.

[Lowedog]

If draw weight is good then I wouldn't worry about the little bit you are off on the rest.    

[Button Nubbs]

Sorry, draw length is good. Haven't checked the draw weight yet.

[Lowedog]

That is what I figured you meant.  So get it on a scale and if it is close then you are good to go.

[Todd_ID]

My opinion is that draw weight doesn't matter in tuning except for matching arrows to the bow.  Too short of cables compensated for by lengthening the string will result in too long of a draw length, and that's not too good.  You've got a good draw length, timing, and ATA, so by my line of thinking you're all set.  All that's left is fine tuning.

[Lowedog]

I agree draw weight doesn't matter in tuning but if he has 70lb limbs and they are only pulling 62 then something is off even with the specs as close as they are.  My Guardian and now Destroyer 340 both are close to 3/4" long on draw length with all other specs being close including draw weight. 

[Button Nubbs]

Actually I was wrong remeasured the draw length last night at like todd its almost 3/4" long.

[Button Nubbs]

So much to learn. So little time .

[Lowedog]

From what I have read and even talked to a guy at Bowtech it is common for Bowtech bows to be long on the draw length.  Actually I think it is pretty common for most manufacturers.  Helps them reach that IBO rating.   

[Todd_ID]

From what I have read and even talked to a guy at Bowtech it is common for Bowtech bows to be long on the draw length.  Actually I think it is pretty common for most manufacturers.  Helps them reach that IBO rating.   

Yep, pretty common.  Bowtech and Mathews can count on 5/8-3/4", Hoyt is nuts on, PSE is 1/4-1/2", Alpine is 0-1/8", Martins vary; at least these are what I get when I blueprint a bow for a buddy in my shop (not pro-shop, just at home).  I shoot a 29" cam on my Mathews to get my 30" draw length I need.  I set it up to be 29-3/4" on my draw board, and then tie in a tight, short D-loop to get the last 1/4"; voila, a 30" draw from a 29" cam.

[Button Nubbs]

Just got the the bow on a scale and it came in at 65lbs. I'm confused...

[Lowedog]

I take it you have 70lb limbs...

[Button Nubbs]

Sorry, no 60lb limbs

[Button Nubbs]

Also the bow shoots way left. I can't adjust my sight any more to the left. Bare shafts and fletched are hitting in the same spot

[Lowedog]

Not uncommon for them to pull a few pounds heavy.  5lbs may be a little much.  You might untwist each cable one full turn and see what you get.  Did you ever check draw weight with your old strings? 

As for shooting left.  How did you set your center shot and what rest are you using?  Did you paper tune to start? 

[Button Nubbs]

Well I got the shooting left thing fixed but I'm too embarrassed to say what it was lol so if I untwist the cables it will decrease the poundage but won't that also affect my ata?

[Lowedog]

It will affect the ATA but not by much and I wouldn't worry so much about that.  There is some tolerance on those numbers.  Untwisting your cables will decrease draw weight and will also shorten draw length slightly.  Just make sure your timing stays on.

[Button Nubbs]

Thanks lowedog!

[Todd_ID]

So what caused the shooting left problem?  Using the wrong eye?

[Button Nubbs]

Lol no not that stupid... I just bought a cheap p.o.s. Dovetail sight it has micro adjust for the windage but also has a slide adjustment. I found the slide adjustment on accident and that fixed the problem.