I've got a few Carbon One #600 I'd like to use along with my #700 Axis...

These Carbon Ones bareshaft beautifully Vs tiny fletching: I'm hoping to over-ride that reality to turn #600 Carbon Ones into fake-#700

If I replace small feathers with big ones (even 4 fletch), would that reduce the effective spine of those #600s toward #700 ?

Bigger feathers stiffen spine because they add more weight to the back of the arrow.. Smaller feathers and heavier points.

What fdp said

jk -

Consider that 3 5" feathers weight about 10 grains, 3" feathers about 7. You tell me how much of a difference it's going to make.

Now, if you go with vanes, the weight can more than triple, but then you can run into FoC problems.

*note: FoC is never an issue, unless you don't have enough, and C1 600's have a max head weight of 110 grains.

Viper out.

Didn't know carbon arrows had a max head weight. I need some more schooling. I'm shooting 600's out of a 40lb bow with 200 grains up front. Am I endangering myself?

John

All arrows have a max head weight.

I know I'm not as smart on archery as viper, but I thought I was pretty smart and that Max head weight is a new one to me too!

where do I find that information as I never knew that.

Wouldn't max. head weight for a particular spine arrow depend on the draw weight of the bow and be determined by tuning?

Interesting confusions!

My thinking was backward.

https://eastonarchery.com/arrows_/carb on-one/

The max head weight Viper referred to is specific to that particular shaft, not all 600 spine carbon shafts.

a) if trying the above url, close the space in the word 'carbon'

b) I think the numbers refer to what glue-in points are availale, or recommended, not what is 'allowable'.

c) I'm not in the 'extreme foc' camp, I generally prefer heads in the 125-145 grain range. Easy to tune and also easy to find broadheads in that weight range.

Thanks, This makes more sense to me.

"b) I think the numbers refer to what glue-in points are availale, or recommended, not what is 'allowable'."

I don't think my hunting set up has shot anything less than 285 for years. Like 10 plus.

Bowmania

and I always thought the larger feather stiffened the arrow spine not because of weight in rear (so minimal) but stabilized the arrow quicker like the extreme with flu flu. I guess I was taught wrong..

adding weight to the rear of an arrow is equivalent to reducing reduced 2X the same weight from the front of the arrow. Thus plus 10 grains in the rear equals minus 20 grains at the front.

Jack -

You're alive! Hope all is well.

That's true, but how many folks here can tell the difference 20 grains of head weight makes ;^) ?

Viper out.

Do all shafts have a maximum head weight, or is it just some and not others.

chill -

The OP's Carbon Ones, are skinny target arrows, and their diameters dictate the max head weight. This is due to keeping the head from standing proud (having a larger diameter than the shaft). With these arrows, as the spine, and diameter increases, so does the head weight, from 90 grains for the smallest to 120 grains for the largest.

This is certainly not the case for standard diameter shafts.

Viper out.

The way I understand it, drag increases as feather size goes up which would stiffen the dynamic spine.

Athough the actual feather weight will also have an effect on spine, not sure it would be as significant as the effect of drag or point weight.

So by increasing your feather size, you are actually also increasing the arrows dynamic spine which is the opposite of what you are trying to achieve if I read your post correctly.

Been using 200 grains up front on 600,700 and 800 for years. No issues and no worries John.

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