Arrow Spine Deflection

[rotorooter23]

Hey Guys,

 

Just wondering what kind of set up you are running with arrow length, draw weight #, draw length, and spine deflection? Curious to see the combo's and with my understanding you can run a stiffer shaft with a heavier field point/ BH and or vice versa due to the Archers Paradox.

 

I am currently at a 29 in draw,  70# draw, 28 in arrow using a .400 spine. Due to my new bow having aggressive cams, I will need to switch to a stiffer shaft so I have ordered some 340's.  

 

 

Edited September 17, 2014 by rotorooter23

[Trial153]

Your under spined ...bumping to 340 will work of your using 100 heads... If your shooting 125 or heavier then you better off with .300

[Hock3y24]

27.5 draw 27 inch arrows

125 gr head

65 lb draw

.400 spine works good for me

[phade]

You should have been at 340 to begin with.

[oblivitar]

28.5 draw length

28.5 long easton bowfire

340 weighing in at 424 with 100g tip.

Hoyt faktor turbo

70#

Edited September 17, 2014 by oblivitar

[Kujo48]

70 lb draw

28 inch draw

27.5 inch arrow

100 grain head

.340 spine

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[moog5050]

Either 340-350 with 100g heads or 300 with 125g heads should work for you. I prefer to error on the side of stiffer arrows. I will bet that even 300 with 100g will fly well out of your bow if the bow is tuned well.

[rotorooter23]

Yes, just had it fine tuned and when I shoot now I get a little fishtail action. switching to 340 with 100 grain tip. I could get away with a 28 in arrow at 28.5 draw

[SteveB]

Length of arrow makes far more difference in dynamic spine than point weight does.

[biggamefish]

SteveB is right you can have heavy or light heads and change the spine dramatically to fly with your weight of choice in heads by  leaving your arrow longer or cutting it down.

 

My set up,

50# @ 29" Striker Fastback

Draw 291/2"

Trad. gold tips 32"

265grns up front

total arrow weight 630grns 

[RayFinkle]

Shooting 350 Maxima Mayhems

~65 lbs draw

28" draw length

28.5 arrow length

100g heads

Been shooting arrows accurately but hitting the target crooked/fishtailed.

Arrows or form? Shooting a PSE Stinger 2010 with bulky rubber grip removed.

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Edited September 18, 2014 by RayFinkle

[dbHunterNY]

hunting bow:

29", .340 spine, arrow.

100gr head

29" draw length

67lbs

 

3D/back up hunting bow:

27-1/4", .400 spine, arrow

100gr head

29" draw length

61 pounds

 

definitely use a good arrow chart like Easton has and figure in all the corrections.