A Knock Down Spine Tester

[fish n chicks]

After some thought, it made sense what Captain J did with his pendulum. Over boring the post, and under drilling the arms by 1/64 or 1/32" for the brass pins, would be a far simpler and cleaner process. I would recommend going that route for most as peining isn't always fun. Thanks for the tip brother!

[fish n chicks]

I also forgot to mention that, based on my little digital scale (nothing fancy to really measure this) the weight put on the shaft from 1.25" out (currently the case with the screw hook used) and the difference from the weight directly above your arrow, were negligible. After some testing I found differences to be in the 0.003 percentile, or 1 pound roughly. Hope this helps clear any questions with that regard.

[KellyG]

Clear as uuuh mud thanks    Please don't make it any clearer My head hurt enough already. ;P

[fish n chicks]

Double Post.

[fish n chicks]

Sorry, double post.

[Mike Vines]

I'm impressed Jon.  Does this mean your not coming over to make arrows with me anymore?  Why don't you bring it over and we can go test it against an ace spine tester, and even get started making a few up up you want to.

[fish n chicks]

Thanks Mike! Looking forward to some arra making soon bro.

[fish n chicks]

I just wanted to report, that last night I got to compare my home made spine tester to Mike's Ace spine tester, and got pretty much the same readings for the two arrows we tried. We tested a carbon, which came in at 80#'s on mike's Ace, and 82/83 on mine, and a woody, which tested at 60/61 on mike's, and 62/63 on mine. We both think the difference is a direct result of me not being able to fully zero my dial guage. It's about .012 off, which pretty much equalled the consistent difference.

In the end, I felt very good about my $15 tester being darn near as accurate as a tool that costs about 8-10x that. I figured i'd share these results with the gang, in the hopes of relieving some doubts some may have had as to performance.