Spin Testing Tips

[Band]

I've been researching the importance of spin testing arrows/broadheads recently and have made a few discoveries that I want to share.

I started by making the spin testing tool pictured here.



What I found is that I was very hard pressed to find any arrow/broadhead combinations that did not appear to be perfectly straight or darn close to it by using the tool.  Then I followed another tip I read about which is to stand the arrows up vertically on a flat surface and give them a good spin.  A pretty obvious wobble, undetected by the tool, became apparent with this technique.

Also, surprising to me was that I found all of the arrows I tested to be very straight
but I had 2 (practice) broadheads with wobbles.  I know this by process of elimination in testing several broadheads in each arrow.  And I also noted that those wobbly broadheads were very inconsistent during my shooting practice but the straight ones hit the target consistently in the same spot.

Having at times had a lot of problems with broadhead shots during practice I definitely learned the importance of spin testing to make sure you are using straight broadheads (in addition to straight arrows) before broadhead tuning your bow.

Any other tips?

[jrebel]

I spin test all of my hunting arrows and tips.  Simply spin them in the palm of your hand...if they wobble at all they are not going in my quiver.  Been doing it for years and am convinced it makes all the difference in a good shot. 

 

[Jellymon]

Keep in mind the wobbly broadheads are more than likely not bent. There is a small amount of play between the broadheads ferrule, and the wall of the insert. If not lined up perfectly, you get a wobble. You find which direction the "bent" broadhead is "bent" toward and press the point against a piece of wood "bending" it back into alignment. Its tricky at first but easy once you know whats going on.

[jrebel]

We found that the broadheads are very seldom the problem.....usually it is the arrow and the way the inset was seated in the arrow.  We take the broadheads and spin arrows till we find a good arrow.  With my new carbons and the HIT inserts I have never had a problem. 

[Katmai Guy]

sometimes if your inserts are glued in with hot melt glue you can heat them up again, twist the broad head and insert around more than 360 degrees, line up the blades with your fletching, let it harden and spin again and sometimes this cures the problem.

[D-Rock425]

I use the same type set but i roll on bearing instead of nails and have a dial indicator on the arrow shaft right behind the broadheads.

[724wd]

i bought some G5 strikers this year.  ONE of the three spun true.  they're fine without the blades, but put the blades in and WHAMMO!  outta whack.  i haven't had that problem with Shuttle T's.  not really impressed with strikers.  Montecs, field points, and Shuttle T's spin perfect in them.  if you run into a problem, it may be the blades are not seating perfectly like these strikers.