Ok, I have a problem, I just bought a new set nice arrows and I am now hitting all over the place. First of all my setup is:

Hoyt AlphaMax
28in
65lb
New Arrows- Gold Tip Pro Hunter 5575 4in vanes
Wasp 100 grain 3blade braudheads
WB

With my old arrows I was using 3in quick spin speed hunter fletchings. And I think the old arrows were a bit lighter than my new arrows....... would the switch from 3in quick spin to 4in factory vanes cause a drastic change? Would it help if i re-fletched with helical vanes?

or

What steps should I take to re-tune my bow? Im lost on what to do.

Your vanes are not the issue - at least not directly.

Some possibilitiies would be: under-spined or a vane clearance issue.

My suggestion is to download and read the Eason Tuning Guide:
http://www.willowcreekarchery.com/Ea...ning_guide.pdf

Not sure the actual length of your arrow which will affect spine choice , but I am guessing you have a clearance problem somewhere. Also check to make sure the arrows spin true with broadheads attached.

Dan

I think my arrows are around 27 or 27 1/2 long. I've checked the clearance, and it looks ok. I do use a WB though.
Tell me more about the spine issue, I dont know much about arrows.
-Thanks-

I had all sorts of accuracy issue with the WB on my Hoyt. Switched to a fall away and the groups tighten right up.

In layman's terms, spine is the stiffness of the arrow shaft. The term 5575 can be misleading because other factors affect the required spine or stiffness in any given bow set-up. Inlcuding draw length, arrow length, accessory (including point) weight, cam type etc. It is better to be a little on the stiff side of the spine scale than weak. I suspect you're set-up is on the weak side of spine and the tuning procedures in the Easton Tuning Guide will confirm.

According to Goldtip's site, your setup could fall in group 4 or 5, with group 4 being 5575's and group 5 being 7595's. I shoot the Alphamas at 29" 70 and shoot as .340 spine with no spine issues.

IMO, it would best for you to shoot a .340 instead of a .400 spine, but I don't believe you are under spined enough to cause the problems you are having.

Since you are shooting a fixed blade bh, I believe your bow is out of tune. Have you shot field points? If so, how did those groups look? Have done any tuning to the bow at all or are you shooting it right out of the box?

I would start by shooting it through paper and seeing what kind of hole you are getting. Then you can move on to bare shaft tuning and wrap up with walk back tuning. If your bow is in tune, you should be able to shoot your fixed blade bh and have the same poi as your field tips.

If you are not familar with any of the tuning processes, I would suggest taking your bow to a good pro shop and asking them for assistance with tuning it.

I Agree! While the spine might be border line I doubt that is the problem.

I have tuned a couple of AlphaMax Bows and they all tuned very easy and straight down the middle. The Last one I tuned was very similar to your setup but 62# instead of 65# I shot 400's out of it at 27.5" and once setup with levels & lazers never had to move anything over 1/32" through the remainder of tuning.

Dan

I'm sure. It will (length of arrow WILL affect spine).

I pretty sure he knows and stated just that. I think he said, he is unsure of the actual length of the arrows, which will affect spine choice.