Easton Full Metal Jacket Spin Testing???
 

Ok.. As I posted before I was shooting blackhawk vapors & with helical. Well done with that and went back to offset with a new arrow; Easton Full metal Jacket. Awesome arrow and am back to shooting great groups. Just one question (Newbie with these arrows).

I put a broadhead on and need to spin test it. I got the stone for lining up the blades with veins, easy enough. But how the heck do I spin test these if i cant heat them up? can you?

The pro shop told me I shouldn't have to spin test and that was the point for that type of insert. Is this true or just something just said to make it sound good?

RE: Easton Full Metal Jacket Spin Testing???
 

You don't need to line up your blades with the vanes, this is a myth. Spin testing has nothing to do with heating. It only requires that you spin the arrow like a top, on a table or something flat, and see if there is any wobble. Im not sure but I think that the FMJ's come with HIT inserts. If so than spin testing is not really necessary but should be done as a procaution.

RE: Easton Full Metal Jacket Spin Testing???
 

I have always spin tested my arrows and get excellent results when I do. I know what spin testing is and have the spin tester, which is showing the wobble. On my other arrows, aluminum insert. I would heat the insert and would adjust as necessary to get no woble and would always fly tru like a dart after that.Normally a couple turns to even theglue on the insert would get rid of the wobble but other timesi would have tocenter it.

Is there a way to spin test and fine tune these broadheads with this type of insert??

RE: Easton Full Metal Jacket Spin Testing???
 

That I am not sure. Perhaps they were installed wrong or you got a bad shaft?? I did all my HIT's and they all spin true, and fly even truer. They seem to work good for me.

RE: Easton Full Metal Jacket Spin Testing???
 

Hmm... Very Possible...and I would hope that would be the case. Guess I have to try couple broadheads and a few other shafts. Sure will suck if they are all like that and there is no solution.

Im hoping somebody tells me that there is a way. If there is i sure dont see how.

RE: Easton Full Metal Jacket Spin Testing???
 

Ok...Just went and checked a couple of shafts with the same broadhead. They all tested out awesome. Except that one. Sooo....

I have nothing to worry about as far as wobble and all that other good stuff.

But i would still like to know if there is anything you can do about ones that do have the wobble.My guess is no but like i said, i dont know to much about these arrows. If not, o well.

RE: Easton Full Metal Jacket Spin Testing???
 

Glad you figured it out, but im not sure about that one shaft. Could be a bad one???[&:]

RE: Easton Full Metal Jacket Spin Testing???
 

What you might have is an arrow that is not cut off square. You can use that stone to work away some of the carbon, and then if you own/have or have access to a G5 ASD (Arrow squaring device), give that a whirl on the aluminum outside. Your broadhead may well not be sitting flush to the arrow, and that might be the source of your wobble.

Easton makes broad head adapting rings that are designed to go between your arrow and the back of the broadhead. In part to protect your arrow and in part to align the broadhead. I blew $15 on them, and honestly I think they just made it worse... just an aside... and someone else may be able to shed some light... but for me, the ASD and stone did the trick on my FMJs

Good luck.

RE: Easton Full Metal Jacket Spin Testing???
 

Once those inserts are glued in place there is nothing you can do to them.

All you can do is use the ASD to make sure the end of the shaft is squareand/ or try different broadheads on that arrow.

RE: Easton Full Metal Jacket Spin Testing???
 

I agree. Those HIT inserts are about as straight as they can be when installed according to instructions. I cut my shafts (Axis) in a lathe using a collet and diamond wafer cut-off tool. They spin true.