Traditional Archery Discussions on the Leatherwall


interesting spine problem....

Messages posted to thread:
Dao 19-Aug-17
Dao 19-Aug-17
OBH 19-Aug-17
Rick Barbee 19-Aug-17
Jim Casto Jr 19-Aug-17
Jim Casto Jr 19-Aug-17
M60gunner 19-Aug-17
Dao 19-Aug-17
Shifty 19-Aug-17
GLF 19-Aug-17
Orion 19-Aug-17
2 bears 19-Aug-17
Jinkster 19-Aug-17
Dao 19-Aug-17
Jinkster 19-Aug-17
olddogrib 20-Aug-17
From: Dao
Date: 19-Aug-17

Dao's embedded Photo



.... well, not really a problem.

but an observation, that may be interesting to some.

it is deliberate experiment. and so far, this result has been repeated consistently.

shooting RH bow, right handed.

anyone want to guess what the experiment is?

-ted

From: Dao
Date: 19-Aug-17




oh... distance is 10 yds and bow is 44#@27" I draw 27". with clicker, dl is consitent (as I can make it) for all arrows. -ted

From: OBH
Date: 19-Aug-17




You must be shooting the bow upside-down. Lol

From: Rick Barbee
Date: 19-Aug-17




Just guessing -

The experiment is:

to see just how misleading false positives can be when shooting excessively out of spine arrows, especially when they are excessively weak in spine.

The reason I draw this conclusion is - For a right hand shooter, the arrows should be impacting more to the right as the spine decreases. The only thing, that could cause them to go to the left is contact created by the excessive flex, and that contact is producing a false positive.

Rick

From: Jim Casto Jr
Date: 19-Aug-17




Even a grossly out of spine arrow will fly down the middle-bare shafts is a different story.

Okay... the point of aim is consistent--right? If it was a spine issue the .600's and 500's should have flown right of the .350.

As of right now, I'm stumped. It'll be interesting to see what this experiment is. :^)

From: Jim Casto Jr
Date: 19-Aug-17




.... Unless you shooting thumbring--maybe?

From: M60gunner
Date: 19-Aug-17




I will agree the heavy spine arrow would shot straight, bow probably cut at least to center or more. Especially at that range. The 600 spine arrow looks in the pic to have almost to perfect Fletch. Are those vanes? The 500 spine, unless the point is ultra lite should be the arrow in kill. Or did you cover one eye?

From: Dao
Date: 19-Aug-17

Dao's embedded Photo



Hi Jim,

Yep. You got it.

I got a thumb-ring with "claw" on it to be able to hold the arrow in place.

I was playing around with my arrows yesterday, and saw something weird happening, so I decided to see what happens with different spine arrows this morning... with the results above.

I _think_ what Rick Barbee wrote about "contact" created on the release is the real reason though.

so theoretically, if I can manage to release cleanly, this result should change...

-ted

From: Shifty
Date: 19-Aug-17




Hes shooting a righthand bow lefthanded.

From: GLF
Date: 19-Aug-17




I've seen wrong spines fly like heck but always hit where you aim. In the 1980's around here target archers shot way overspend arrows indoor for line cutters. That popular setup was 2419's out of 40 to 45 lbs. I shot 2219's out of 50lbs and managed 296 or 297 consistantly.

From: Orion Professional Bowhunters Society - Qualified Member Compton's Traditional Bowhunters
Date: 19-Aug-17




The results won 't change much, regardless of how clean your release. The spines that are too soft just flex too much and are going to hit the riser, causing them to go left.

From: 2 bears
Date: 19-Aug-17




Nope. Thumb ring comes off the string the opposite side as fingers unless you shoot off the other side of the bow. Least wise they all will shoot left for me any way. Spine can not throw you that far off from 10 yards. >>>----> Ken

From: Jinkster
Date: 19-Aug-17




Filed under: "Weird Results When Shooting Weird"

seems perfectly normal too me! LOL!

Hey!...quick thought...this could really work out when shooting moving targets!...as long as they're moving right too left! LOL! ;)

From: Dao
Date: 19-Aug-17




Jinkster!! you are genius!! :0

From: Jinkster
Date: 19-Aug-17




don't tell mensa! LOL! ;)

From: olddogrib
Date: 20-Aug-17




So from what I'm hearing a thumb ring will cause the arrow to exhibit paradox opposite of what one would expect...i.e. instead of having the effect of the arrow "flexing" around the riser it flexes into the riser causing a "bounce". So what is the gain if no arrow of any spine will fly where you're looking?





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