Main Discussion Area > Arrows
Shaft spiner?
Skeaterbait:
I got these plans from another site. They seem to be pretty simple, what you see is the dial face but read through the word doc for how to build the rest of it.
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Evil Dog:
Was looking at dial indicators over on eBay and realized that I had absolutely no idea what deflection range I needed. Would the shaft flex 1/4" or maybe up to 1 1/2"? I suppose I could take some shafts that were factory spined and get somewhat of an idea. These plans look like what I may have been looking for though and are a lot easier to fit in my budget too !!! Thanks skeaterbait, I sure do appreciate it.
Justin Snyder:
Jim Hill recomends using 1". I got mine at the local Ace Hardware for about $15. Justin
uklongbow:
I think your going to need at least 1" of deflection , carbon redline 600's that work on a 40+# longbow = .6" deflection . some of the carbons that they make are numbered by their deflection in inches ,600,500,460, 350 and so on. but I think they may be measured at 28"you might want to check either the manufacturer or one of the other archery forums.
If you can borrow some various spine carbons or some known spine woodies that will give you a data point to verify yours.
I was looking for that spine tester scale print out, so thanks for that.
Roger
Evil Dog:
Went ahead and built the spine tester that Skeaterbait linked the plans to. Was real easy and did the whole thing for less than 5 bucks !!! Had enough scrap wood laying around the shop so that I didn't have to buy any. Making the 2 pound weight was pretty easy too as I had a bunch of #7 1/2 shot and a reloading scale. Just a matter of weighing the empty container and then weighing out enough shot to bring it up to 2 pounds total. The meat counter at my local grocery store confirmed that it was 2.00 pounds right on the button. The most time consuming part of the whole thing was making up a chart showing the various inches of deflection converted to pounds of spine.... a couple hours quality time spent with a calculator. Not a bad Saturday afternoon project.
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