wood arrow spine help

sticks&stringz · May 14, 2016, 09:50:00 PM

i have a 50#@28" longbow that is slightly deflex.it has about the same profile as the bear montana.it is cut to center and has a strike plate that is 1/8" thick.i draw the full 28" and have a 14 strand b55 string on it, i would like to have wood arrows that and have 3" feathers in a four fletch and 29-30" behind the point, which will be 125 grains but im not sure whether to get 50-55 or 55-60 shafts.any help would be greatly appreciated.

Sixgun · May 14, 2016, 09:59:00 PM

MY best suggestion would be to order a test kit of shafts from whichever supplier you choose.

That will let you try out different spines and see what you need to fit that bow, before you order a full dozen shafts.

Plus, you will use the test kit more frequently that you think....don't ask me how I know!

Hope that helps.

Ray

WESTBROOK · May 14, 2016, 10:24:00 PM

If your gonna fletch them yourself, I would call Surewood and get a test pack of shafts 45/50-50/55-55/60.

durp · May 14, 2016, 11:01:00 PM

i would do the test kit up to 60/65

May 15, 2016, 04:11:00 AM

with 4 four inch and 29 inches back of point with 125 grains, the charts say 51 to 54 spine.

slowbowjoe · May 15, 2016, 08:47:00 AM

I'd start with 50-55's. Or a test kit if you're inclined, probably 55/60 at most. Those 50-55's oughta be tuneable.

frank bullitt · May 15, 2016, 09:20:00 AM

I suggest you put a high performance string on. Or at the least, try to go down to a 12 strand dacron string.

As others have said, test shafts, and I would start at 45.

Orion · May 15, 2016, 11:45:00 AM

A test kit is always a good idea, but either of your choices will work. I've always found that bows will shoot well wood arrows that are a bit overspined, but not so with arrows that are underpined.

cedar · May 15, 2016, 11:53:00 AM

55-60

Tim Finley · May 15, 2016, 12:18:00 PM

My experiance is 10 to 15 lbs. heavier than your bow the longer the arrow the stiffer try 60 to 65

elkken · May 15, 2016, 01:41:00 PM

QuoteOriginally posted by Tim Finley:
My experiance is 10 to 15 lbs. heavier than your bow the longer the arrow the stiffer try 60 to 65

X2

frank bullitt · May 15, 2016, 03:09:00 PM

Well, maybe I misunderstood, but the bow is some what deflex .... string follow?

This is what I am basing my recommendation on.

slowbowjoe · May 15, 2016, 06:19:00 PM

Frank, I think sticks&stringz meant reflex/deflex; he said the profile looks like the Montana.