Are Gold Tip's 340s the same spine as Trad Only 340s ?

Tedd · May 07, 2015, 08:04:00 AM

I'm about to hit the order button on some new shafts.
I know the both say .340! Just checking, are the two pretty much identical in spine?
In the past when Gold Tip's 75/95 was .300 it was not the same spine as a Trad Only .300

Thanks,
Tedd

Jim Wright · May 07, 2015, 09:17:00 AM

Maybe, and I'm not being sarcastic, my past experience with carbons is similar to yours. Hopefully someone with experience shooting both will chime in.

The Whittler · May 07, 2015, 08:36:00 PM

I know what you mean. I shoot GT 3555 and Beaman 500 and they do shoot a little diff. from each other. Sorry cant help.

May 07, 2015, 09:19:00 PM

I would bet my bottom dollar that the answer is NO!

I shoot GT, but the 55/75's. I have run dozens and dozens of arrows thru a spine tester and not one single shaft has come out at .400 (what is printed on the label). They are all stiffer, with most being between .350 and .370. I would be willing to bet that the 75/95's are way closer to .300 than they are to .340.

Bisch

LookMomNoSights · May 07, 2015, 09:37:00 PM

QuoteOriginally posted by Bisch:
I would bet my bottom dollar that the answer is NO!
Bisch

X2..... wouldn't trust it.

Tedd · May 07, 2015, 10:21:00 PM

Actually the .340 Trad only is just a tad weak. So the .340 gold tip might be perfect.
I have one of those wall hang short spine testers. It doesn't read carbons correctly.
Tedd

Doc Nock · May 08, 2015, 08:33:00 AM

Isn't that why Troy's Tuning Guide on the Tuff Head site suggests starting out full length witht he point weight set up you want and cut from the rear to dial them in?

I remember Troy telling me in his years of building competition arrows, he seldom found a packaged dozen of any maker that were all the same spine... he kept cull boxes of various spines till he got a like dozen, then built them.

Wrapping mandrils with carbon layers has GOT to be a challenge to get it exact every time. From what I read, the carbon m aterial wasn't made for our industry, so the QC on specs is focused on other dynamics then flex which "compounds" (sorry for the word on a trad site) :rolleyes: the problem...

May 08, 2015, 09:17:00 AM

That is what I do also, Doc Nock. I buy a dz shafts when I have the extra cash, run then thru the spine tester, and sort them in groups of .010" defection. When I need more arrows, I grab a group and fletch them up. Before doing this, I would have "flyers" every now and then that just were useless. I am pretty sure now that I know what the flyers were, and never have them anymore.

Bisch

Tedd · May 16, 2015, 09:37:00 PM

So I received some .340 Gold Tips. I got the XTs. And they are just a bit stiffer. And excellent quality. I got em tuned up just right in about 10 minutes.
Also I picked up some Gold Tip 50 grain aluminum inserts. The inserts are about 2 1/4" long. Most commonly 50 grain inserts are brass and short. The long aluminum inserts give you some more tuning options. It seems like you can ad 50 grains with little effect or actually stiffen the arrow boy using these.
If nothing else they make the arrow front end a lot stronger and there is a lot more glue surface.
Tedd

BigJim · May 17, 2015, 08:07:00 AM

Well, just the fact that they are larger in diameter then the trad only's will make them act stiffer.

BigJim

wingnut · May 17, 2015, 08:46:00 AM

If you are using a wood arrow spine tester it's not the correct spacing for testing spine on a carbon.

the carbons are tested at 1.9# and 28"

wood arrows are tested at 2# and 26".

Mike

May 17, 2015, 10:29:00 PM

QuoteOriginally posted by wingnut:
If you are using a wood arrow spine tester it's not the correct spacing for testing spine on a carbon.

the carbons are tested at 1.9# and 28"

wood arrows are tested at 2# and 26".

Mike

My spine tester is the correct one for carbon arrows, and I stand by the posts above and the findings I have observed.

Bisch

wingnut · May 18, 2015, 06:55:00 AM

The one thing I've found with carbons is that they have a stiff side to them. We used to test fishing blanks by bending them over our knee and rolling them until you found the spine (stiff spot).

I've never done this with carbon arrows but I know from reading that they do the same thing.

I haven't noticed a shooting difference in carbons though caused by spine differences. It should show as left or right flyers.

Mike

May 18, 2015, 08:04:00 AM

Well, every shaft I have spined says .400 on them. The stiffest (these are once in a while oddballs) are in the .310-.320 range. The weakest (also oddballs) are in the .380-.390 range. I guarantee you there is a huge difference in the way a .310 and a ..390 acts off of the same bow.

For the record, on the GT XT Hunter black shafts, the great majority are in the .350-.380 range.

And there is definitely a stiff side to the shaft.

Bisch

wingnut · May 18, 2015, 08:11:00 AM

Wow! I haven't used that shaft but that would be a big difference. Most of what I've shot in recent years has been GT trad hunters. Do you line up the sides to get the spine closer like we used to do with woods?

Mike