I'm posting this here to start another post. We have mentioned this in our foc post. Trying not to put to many subjects under that post
I've always just knoc tuned my arrows. But recently I've been bareshaft tuning. Was chasing my tail just a little. So I spine index the two bare shafts. What a difference. Hoyt21 posted about a thread on archerytalk it was started by ontarget7. If your interested about spine indexing go read it.
If you build your arrows and are trying to get the best T.A.P. from your arrow it might be worth it to you to look at a spine tester.
You can buy one. It's call. Ram spine tester. It's 300 bucks. You can build one. It takes a dial indicator. You need the one inch movement. Less then $20. Depending on how you build it you may want a magnetic base. It's less then $20. I used a 2x2 angle iron 36 inches long. Then I have for now a bolt at 14 from center so I can spine test at 28 inches. I took a 3/4 bolt and added washers to it till I got to 1.94 lbs. I used a paper clip to hang weight from arrow. I have about $50 or so in it now.
I'm looking at putting bearings for the arrow to rest on and a bearing system for the weight also. This will make it easy to spine index. This is going to add about $ 60 to it. This is material only.
Again if your building a T.A.P. arrow. A spine tester would be a good tool to have
Just to make it clear for the non believers. I'm not saying you have to have this to build arrows. I've been doing for years with out it. But to build a arrow for T.A.P you need a spine tester.
I've always just knoc tuned my arrows. But recently I've been bareshaft tuning. Was chasing my tail just a little. So I spine index the two bare shafts. What a difference. Hoyt21 posted about a thread on archerytalk it was started by ontarget7. If your interested about spine indexing go read it.
If you build your arrows and are trying to get the best T.A.P. from your arrow it might be worth it to you to look at a spine tester.
You can buy one. It's call. Ram spine tester. It's 300 bucks. You can build one. It takes a dial indicator. You need the one inch movement. Less then $20. Depending on how you build it you may want a magnetic base. It's less then $20. I used a 2x2 angle iron 36 inches long. Then I have for now a bolt at 14 from center so I can spine test at 28 inches. I took a 3/4 bolt and added washers to it till I got to 1.94 lbs. I used a paper clip to hang weight from arrow. I have about $50 or so in it now.
I'm looking at putting bearings for the arrow to rest on and a bearing system for the weight also. This will make it easy to spine index. This is going to add about $ 60 to it. This is material only.
Again if your building a T.A.P. arrow. A spine tester would be a good tool to have
Just to make it clear for the non believers. I'm not saying you have to have this to build arrows. I've been doing for years with out it. But to build a arrow for T.A.P you need a spine tester.
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