underspined/overspined

[JBiorn]

Ok, I am currently tuning Ol' Hickory(selfbow). She is 54#@28"(which just about exactly matches my drawlength). My brace height was pretty short before(about 4 1/2") and I now have it twisted up to 6 7/8". This adjustment has me hitting pretty sweet, and right where I look. Trouble is, now the arrows(spined 50# and 32" long)are hitting the target with the nock pointed right(I'm right handed). Am I underspined or overspined? Or do I just need to continue tweaking the bow?
Ahh, the endless search for the "sweet spot".

Thanks in advance guys!

[frassettor]

Your to stiff. Use a heavier point or mabey a longer arrow.

[vermonster13]

Not enough info. Are the arrows going where you want them? Just having the nock out of line can be a release thing more than a spine thing.

[JBiorn]

3 arrows were hitting where I wanted them to. Just that they are ending up like said above. good penetration, too.

[JBiorn]

I got it fixed. I spent a minute or two watching Terry's form video.(Thanks Terry----VERY helpful) Arrows are hitting pretty sweet now. I'm sitting at 6 3/4" for brace height.

[cvarcher]

Are you kidding!! Way too light! you said your drawing about 28 and that bow is 54 lbs . If the arrows are spined 50lbs thats at 28" at 32"  length you take away 5lbs per inch totalling 20lbs which makes those 30lbs spined . Much too soft. You need about 70 lbs spined for a 32" arrow. 32" arrows is way too long . Something your doing doesnt sound right.

[JBiorn]

Ok, now thoroughly confused-----I have one guy saying too stiff, and another saying too light.

I have it working pretty good right now, however I would like to try some heavier arrows and see what happens----not to mention maybe getting better thump.

[robtattoo]

Originally posted by cvarcher:
Are you kidding!! Way too light! you said your drawing about 28 and that bow is 54 lbs . If the arrows are spined 50lbs thats at 28" at 32"  length you take away 5lbs per inch totalling 20lbs which makes those 30lbs spined . Much too soft. You need about 70 lbs spined for a 32" arrow. 32" arrows is way too long . Something your doing doesnt sound right.

Ummmm, not quite right.
The bow is  a selfbow & therefore won't be cut to centre, if at all. The arrow needs to be flexible enough to paradox all the way round the width of the arrow-pass. For a modern recurve, I'd say you were about on the money, for a longbow, you'd be a little stiff (by your calculations) but for an un-cut selfbow, you're way off.
I think that JBiorn is about right where he is & that the nock-right problem is form related, rather than a spine issue (As he's already discovered!   )

[aromakr]

The first thing I would do is not worry about how the arrows look in the target, not knowing what the target media is, that in its self can effect how the arrows penetrate it and effect's the direction the nock points.
Have someone watch the arrow in flight, if the arrow is wagging its tail at you its a spine issue, also you want the arrows to print on a verticle line with your point of aim, (for a right handed shooter) an arrow to the left of your aiming point is too stiff, too the right its too weak. I'm guessing your a tad too weak, not knowing how far from the center of your limb to the strike plate is. I would bet if you reduced your arrow length by two inches you will be in the ball park.
Bob

[JBiorn]

Thanks guys. I have some stiffer/heavier arrows on the way----I'm hoping this works out really good, but if not, I'll just stay at the spine weight I'm at now.

I appreciate everyones time and input here, it's been very helpful

Jeff