Ultra skinny arrow shafts question

[Onions]

Looking at trying some ultra skinny carbons, .166 ID. My current set up is a .500 spine, but I have read that the .166 diameter arrows tend to have weaker spines??

Does anyone know if this is true?

Chris <><

[McDave]

I've experimented with Victory VAP's, which are skinnier than the GT trads I usually shoot.  I think if they mark the shaft .500, that means it is .500, skinny or fat.  Of course, nothing is that precise, and the actual spine could be a little more or a little less, depending on their tolerances.

I did build out my side plate a little, so the VAP's wouldn't be riding inside the centerline of my bow.

[Bowwild]

I use Easton's Deep Six Injexion shafts.  Love them. No tuning issues. I use the 460 out of my 44-48# recurves and 27-27.5 inch arrows (depends upon tuning need).  I can vary broadhead weight to fine tune.

I shoot 600 or 500 in other Easton Axis shafts.

The only downside for me is the different threads.  But, I shoot only one broadhead and the maker of that one sent me some deep six threaded ferrules.

Probably going to use new FMJ "Autumn Orange" shafts this season.

[drewsbow]

I find skinny shafts seem to shoot a little stiff

[Michael Pfander]

If you think about the effect of the side of the arrow against the strike plate you can see why skinny might act stiff.  Less distance from center line to outside of arrow.  Much the same as decreasing the strike plate thickness.
MAP

[longbow fanatic 1]

Currently, I'm shooting Victory VAP (V6,V1) shafts in .600 spine for my 3-d bow (38#) I'm also shooting Victory VAP TKO shafts (.400 spine), with 275 grains up front, out of my 45# hunting bow. I don't know if the shafts run true to spine or not. I'm kinda with Dave on this one. Spine tolerances marked should be the same from arrow manufacturer to manufacture. The measurement of arrow deflection is a hard science measurement. If the companies are truly checking spine deflection between their different shaft offerings, they should be very close.

[Onions]

Great! Thanks everyone for your insight!

Chris <><

[katman]

Originally posted by Michael Pfander:
If you think about the effect of the side of the arrow against the strike plate you can see why skinny might act stiff.  Less distance from center line to outside of arrow.  Much the same as decreasing the strike plate thickness.
MAP

x2