Primitive Archer

Main Discussion Area => Arrows => Topic started by: gothmog on September 11, 2012, 11:22:41 pm

Title: "waterlogged" spine tester
Post by: gothmog on September 11, 2012, 11:22:41 pm
Anyone build one of these?  I've read the build a long, and have a question.  He states in the assembly section to nail the middle "pivot" into the centerline of the board.  One of his pics, however, looks like the nail that catches on the arrow where the weight is placed is on centerline, which makes more sense to me.  Any ideas?
Title: Re: "waterlogged" spine tester
Post by: CherokeeKC on September 12, 2012, 09:02:25 am
Where the middle of arrow pushes down on nail needs to be in middle of tester to measure deflection at that point
Title: Re: "waterlogged" spine tester
Post by: gothmog on September 14, 2012, 07:35:10 pm
That was my thought as well, but his instructions state otherwise.  Thanks!
Title: Re: "waterlogged" spine tester
Post by: gothmog on September 18, 2012, 10:55:10 pm
so is correct reading for spine on the stiff side?
Title: Re: "waterlogged" spine tester
Post by: Fred Arnold on September 19, 2012, 10:57:56 pm
I missed something here. Where did you find this? I'd like to look at it.
Title: Re: "waterlogged" spine tester
Post by: Gus on September 20, 2012, 12:45:50 am
This is the one I have on my To Do list... :)

http://www.primitivearcher.com/smf/index.php/topic,4589.0.html

-gus
Title: Re: "waterlogged" spine tester
Post by: gothmog on September 20, 2012, 10:41:23 am
thats the one. I built it, works great.  My question is do you take the correct spine reading fom the stiff side of the shaft that goes against the bow, or one of the lower reading sides, or an avg, or ?????
Title: Re: "waterlogged" spine tester
Post by: CherokeeKC on September 20, 2012, 12:20:26 pm
You want stiff side measurement as this is.what affects the flight from ur bow the most...the way it bends around bow upon release
Title: Re: "waterlogged" spine tester
Post by: gothmog on September 20, 2012, 12:43:35 pm
Thank you