Spray Pint Crown Changes Arrow Spine?

[wolfhunter4life]

Hey guys, I'm new at building arrows and gave it a try. I used POC cut to 29" in 55-50 spine out of my 58# classic longbow. Shot great with 3 rivers pre finished shafting. I stained my arrows one coat, sprayed on an 8 1/4" crown, and sealed with minwax poly wipe on. 3 coats. My arrows seem to fly worse than the other uncrowned shatfs. Shooting 3 5.5" parabolics on both. Any help would be great. I am using 125gr points so I can bump up if need be.  :confused:

[wolfhunter4life]

Scratch that....I'm using 55-60 spine.

[cedar]

My crown, crest, and sealer doesn't seem to affect my arrow flight.  If for some reason yours is, it should be making the arrows stiffer.  Try a heavier point and see if it makes them fly better.  It may have more to do with the shafts you are using. Not all shafts are created equal.  Make sure the shafts you are using are straight and same spine.  Spine them yourself if you have a spine tester.  I have received shafts that are mismarked for spine.

[Pops]

If your draw is 28" and your getting all the 58#
and using a fast flight string? Have you tried a
60/65 or 65/70 try 145 gr tip also. Is the bow cut to center? But, using spray paint for cresting
works well for me with no change in arrow flight.

[Killdeer]

It's not the paint.

Killdeer  

[Rob W.]

Originally posted by Killdeer:
It's not the paint.

Killdeer      

x2

[Zradix]

Maybe the test pack and your shafts are different spines?....
at least different enough to make a difference.

5# range is definitely enough to notice.

I can easily see the difference in just 1# difference when I paper tune...not with my eye.

[gringol]

definitely not the finish or the paint.

I'm going for different spines.  Different species of wood can have the same spine rating but behave very differently shot from the same bow.  Make sure your test pack shafts are the same type of wood as the arrows you're building.

[Zradix]

that's a good point gringol.

brings to mind another thing that can cause problems ..
This can be worse when using two different species of wood, but can also cause a noticeable difference even in the same species.

I'm talking about the weight of the shaft itself.

[kbetts]

Probably weight and spine.  Arrow weights in the same spine can vary significantly.

[Hot Hap]

Is the shaft thickness the same?

Hap

[WESTBROOK]

Adam, if your gonna make your own wood arrows a spine tester and grain scale is money well spent.

Its amazing the spread you can see on a dozen so called "matched" shafts.

Try a 145-160 point on them, if it gets worse your too weak.

Eric

[wolfhunter4life]

Thanks for the info guys! I need a spine tester for sure Eric. Something is up. So far 2 out of 3 arrows fly good....maybe the one is a lemon. I'll fletch up a few more and mess around with point weight. A grain scale and spine tester is on my list shortly.

[gringol]

Surewood shafts are great for consistentcy.  A spine tester is still good, but it doesn't usually make any difference with surewoods.

[JamesV]

The arrows are probably flying the same but with the cap paint the flight is more noticable.

[lpcjon2]

I would say you need a little heavier spine.65-70#JMHO

[wolfhunter4life]

Still not sure fellas. I shot 4 arrows tonight and ONE has bad flight no way how I slice it. Bad. The other three are acceptable. I was only shooting 18 yards and grouping good with 3. I recently switched gloves from an old beater to a new Big Shot Elk glove. I'm powering the bow 100%. Anchoring the coner of my mouth instead of creeping forward do to sore fingers. Maybe I am under spined. I'll know soon enough. I just received a dozen Surewood Douglas Fir shafts today. Ordered them in 55-60 spine and they range from 430-440 grains. Hopefully they fly good. Going to leave the cap "unfinished" and stain the first 2/3s and poly over 3 times. Should be alright.

[lpcjon2]

Did you spin test the arrow that was flying bad?

[sagebrush]

I think you're shooting arrows that are too light in spine for what you are shooting. At your draw length and bow weight I would be shooting 65-70 lb. spined arrows. This of course would depend on the bow dynamics and how close to center the shelf was cut. Gary

[wolfhunter4life]

Hey guys, I should mention that this particular bow is a classic longbow and is not cut to center. It has a flemish sting and no reflex deflex. And I'm shooting 125 grain points so I should fall into the 55-60 range...not sure.