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Main Boards => PowWow => Topic started by: Flying Dutchman on June 16, 2012, 02:16:00 AM

Title: Bowquiver/spinevalue
Post by: Flying Dutchman on June 16, 2012, 02:16:00 AM
if you attach a bowquiver to your bow, does this affect the spinevalue of your arrow? I read somewhere you should go 5 lbs lower in spine with a boa.
I want to use the Thunderhorn Small Fry Boa, which weighs 10 oz inclusive arrows.
Title: Re: Bowquiver/spinevalue
Post by: Zradix on June 16, 2012, 04:27:00 AM
I wouldn't think it would unless you put wrap around mounts in a working section of the limb.

...but I'm not REALLY sure...
Title: Re: Bowquiver/spinevalue
Post by: Flying Dutchman on June 16, 2012, 04:58:00 AM
The quiver is attached with rubber straps just at the fade-out area of the limbs
Title: Re: Bowquiver/spinevalue
Post by: Uncle Buck on June 16, 2012, 06:51:00 AM
about 30 years ago I wrote a research paper about this. I have long since misplaced it. there were several studies that showed without a doubt tat attachhing a quiver caused changes in the harmonic vibrations in the bow that affected tuning. They were not big changes. Would it make you miss a deer, probably not, but if using a bow quiver in contests you should definitely tune your bow with the quiver on. The number of arrows in the quiver also changed things vey slightly
Title: Re: Bowquiver/spinevalue
Post by: WESTBROOK on June 16, 2012, 08:55:00 PM
On my Hill style bows it makes a big difference, my Shrews dont seem to care.

Eric
Title: Re: Bowquiver/spinevalue
Post by: Fletcher on June 16, 2012, 09:34:00 PM
It seems to matter most on bows with light risers and not cut close to center.  As the arrow is released, it presses against the side of the shelf and moves the bow slightly.  The added weight of the quiver reduces how much the bow moves, so now the arrow has more bow to get around, which requires a bit softer spine.  Anymore, I paper tune with the quiver on or off, depending on how I'm gonna shoot.  With my longbows cut 1/8+ out, it will make 3-5 lbs spine difference.
Title: Re: Bowquiver/spinevalue
Post by: The Whittler on June 16, 2012, 10:01:00 PM
For a right hand shooter, arrows sometimes will shoot to the left. Just raise your brace hight up until your arrows are shooting true.
Title: Re: Bowquiver/spinevalue
Post by: Zradix on June 16, 2012, 10:49:00 PM
this is interesting.
Title: Re: Bowquiver/spinevalue
Post by: Flying Dutchman on June 18, 2012, 02:01:00 AM
indeed
Title: Re: Bowquiver/spinevalue
Post by: Brad Arnett on June 18, 2012, 09:19:00 AM
In my admittedly small sample of bows I've not seen a difference.....only change I've seen is that the added mass of the quiver/arrows can tone down handshock/vibrations a little.