New to the EFOC idea

[handirifle]

#4118

I am still digesting the whole EFOC idea. I have always favored heavy arrows over light ones, but I have a question about it.

I have a 45lb bow I am restoring from some previous owners abuse, twisted limbs, no finish etc, and I am wondering about aluminum arrows. I know about carbons, use them on my wheel bow, but keep coming back to alum. My thoughts are this, years before I had another 45lb recurve that I bare shaft tuned to perfection, with Easton 2114’s. I can still get them, but with the thought of trying out the EFOC concept, it would seem I might need a stiffer shaft to start off with, due to the very heavy arrow head and weights needed to get the correct setup.

What do you guys think would be the shaft to start with? I really cannot afford to buy the sample paks and then the arrows, so it would be nice to start real close to the correct shaft. My draw length is 27-27 1/2″.

Thanks

[David Petersen]

#27549

Handi — This won’t answer your question directly, but is another approach to the same end: If you want EFOC, use carbons. For the most part you can’t get brass inserts for aluminum shafts, thus you are limited in weight up front to what you can get from the head itself. Aluminums were a great tool in their day, and lots of folks still use them, primarily due to price. But if EFOC is your goal, carbon is the way to go. Not only does it allow more ways to get weight up front, but the more slender shafts also contribute a bit to penetration. IMHO

[handirifle]

#27649

I can add weight whether it be with lead or steel, that I make up, so that is not an issue, but cost is, and workability. At least for now it will be aluminum, maybe even wood, but wood will be trickier, as I might have to sleeve the wood shafts with aluminum and add weight there.

I was playing around with a 55lb recurve I have and I have ALWAYS had a tendency to shoot high, and when I added a considerably heavier broadhead, they went right where I was looking, I was tickled. But these old heads were out of balance and grouped poorly, but the spark was ignited for heavier arrows in general, and more FOC in particular.

[Fletcher]

#40978

As a good start, you can figure that you are going to need to add about 5 lb of static spine for each 35 grains of point weight added. The seems to work pretty well up to about 200 gr points. Pick a shaft size that will give you the spine and weight desired. I recommend starting a bit long and shortening the shaft until it tunes well. Many shooters like bareshafting; paper tuning works the best for me. Every bow/ shooter combo is different, but a 28″ 2114 with a 125 gr point is stiffer than usual for a 45 lb bow. If you still have the 2114’s, I’d start with them and some heavier points to see how they tune with your project bow. A 160 gr BH with a 100 gr steel adapter will move you right up in weight.

[handirifle]

#41154

Thanks, I will have to see what I have out there. I doubt I have any, but will see.

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