| From: PMB
|
|
|
|
|
|
|
| Date: 26-Sep-11 |
|
I want to make one of those simple, super ghetto spine testers.I've looked at lots of different designs and found one that seems to be cheap yet easy and effective. My question is, when the shaft is sitting in the grooves, no weight on it yet, does the shaft just touch the pin thats attached to the indicator with the indicator at zero?
|
|
| From: PMB
|
|
|
|
|
|
|
| Date: 26-Sep-11 |
|
just keeping thread visible
|
|
| From: JamesV
|
|
|
|
|
|
|
| Date: 26-Sep-11 |
|
The one I built has the dial indicator under the shaft and reads zero until the weight is applied
|
|
| From: Lombard
|
|
|
|
|
|
|
| Date: 29-Sep-11 |
|
Mine is super simple, and allows me to group my arrows closely. Nothing fancy but gets the job done.
|
|
| From: broncoarcher
|
|
|
|
|
|
|
| Date: 29-Sep-11 |
|
yes always verify that you are at zero before applying the weight.
|
|
| From: Lombard
|
|
|
|
|
|
|
| Date: 03-Oct-11 |
|
Picture of the tester in action. It is a 35 to 40 pound arrow of know spine, and as you can see that is right where the tester says it is. The next wide band or red would indicate 30 to 35 pounds.
|
|
| From: williethebarber
|
|
|
|
|
|
|
| Date: 03-Oct-11 |
|
I just got a Ace spine tester and it works well. Was surprised at what some of my arrows spined out at.
|
|
| From: Patrick
|
|
|
|
|
|
|
| Date: 03-Oct-11 |
|
Yea me to Willie, Very disappointed in a thousand shaft order of POC I got in about a month ago. Just finished testing all of them. Out of a hundred 60/65 I got more 45/50s than 60/65. Same with all the other spines I ordered. I thought it could have been the tester or the way I was using it but come to find out I am not the only one that runs into this. I checked and rechecked most of them. Everyone that shoots POC or any other wood for that matter needs to have a spine tester either homemade or store bought. Especially if you are getting them in bulk straight from the manufacture. I can deal with a large weight span better than I can deal with the spine being off more or less than the specified weight. The spine has to be right!
|
|
| From: Dean
|
|
|
|
|
|
|
| Date: 03-Oct-11 |
|
Lombard, Your tester looks really nice! Do you happen to have plans on how to make it? Thanks!
|
|
| From: Lombard
|
|
|
|
|
|
|
| Date: 03-Oct-11 |
|
Dean, the tester I made is a combination of two different build alongs. The gauge and alignment of holes and gauge are from the PA site, in their how to section. The pointer assembly, I got the idea from a build along in a magazine, but can not remember which one.
The needle is a straight bamboo skewer inserted into the centered end of a dowel. If memory serves me correct the pin the arrow rests on is one inch from the pivot point. I used one inch long hot dipped galvanized nails for the pivot and arrow rest on the pointer. Pivots at the center point where it meets the horizontal line.
Take you a 30" board, measure up a couple inches on each end and connect a horizontal line. Find center and mark a line, square it vertical to your horizontal line. Next measure thirteen inches on either side of center. These will be the location of your arrow supports. Figure out what you are going to use for support pegs, and size them so that you know what size drill bit to use. Drill your holes so the edge of the holes meets your horizontal line exactly. I used a forstner bit for this, it allowed me better control.
The gauge is cut square and aligns with the horizontal and vertical lines, and is to the left of the vertical line. See graphic of the gauge and download. I think I sized the printer to print out the gauge 4" X 6". Hang a two pound weight and there you go.
I have used arrows of know spine and the tester works fine, and will allow you to quickly group your arrows to a particular spine grouping.
Hope this helps. Dave Lombard
|
|
If you have already registered, please sign in now
For new registrations Click Here
|
|
|
|
