posted
I've been reading Dr Ashby's reports with great interest, but have a question. Does anyone have a clue about what kind of hardwood footing has the density to move the FOC on say an ash shaft? I am starting to work out next years hunting arrows and am starting with a tapered hardwood shaft spined at 70-75#. I'll also be using a modified Grizzly 190 head. Any ideas or guidance will be greatly appreciated. Don
-------------------- Molon labe Posts: 588 | From: Falls Creek, Pa. | Registered: Mar 2007
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posted
Don't know about footing but how about this to load up the point on a wood arrow:
Adapter to allow screw in points (50 grain)
Steel adapter to allow glue on grizzly (75, 100, or 125 grain)
Add your 190 grain Grizzly and your looking at a 315 - 365 grain point on a wood arrow.
Posts: 438 | From: Alexandria, Virginia | Registered: Aug 2004
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posted
I've been working on "Ashby" wood arrows myself. It is not going to be easy. On a Fir shaft starting at 400 grains, you need over 300 grains total point weight to get to 20% FOC. Not only is that extremely difficult to achieve, think of what it will do to spine requirements! I have some old high spine woodies around to experiment with though.
Footing ash is not going to increase your FOC much IMO, not matter what you use. This is an interesting and difficult problem, I'd be very interested to see other's ideas too!
What Jeff U just posted is probably the easiest way to add point weight, but I'm not sure that is going to be a perfect solution either strength wise.
-------------------- Braveheart Archery www.braveheartarchery.us The web home of Firefly Bows. Shipping rates start at just $1.99! Trad Gang Sponsor since 2006 Posts: 2598 | From: Kansas City, MO | Registered: Jun 2003
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posted
Jeff, Thanks for the idea, I'll keep it in mind.
SlowBowinMo, Iknow this is going be a challenge, and I'm not just looking at ash as a shaft material, but any hard wood that I could foot to make a diff. I gues my original post wasn't very clear on that point.
-------------------- Molon labe Posts: 588 | From: Falls Creek, Pa. | Registered: Mar 2007
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posted
I'm enjoying this challenge. I am thinking a hardwood footing on a lighter shaft would be just as strong and give more yield on the FOC. The heavier the original shaft the more point weight you need to boost FOC, and point weight is already a problem!
sou-pawbowhunter if you get any ideas or work out any solutions be sure to post, I want to hear them.
Thanks! Tim
-------------------- Braveheart Archery www.braveheartarchery.us The web home of Firefly Bows. Shipping rates start at just $1.99! Trad Gang Sponsor since 2006 Posts: 2598 | From: Kansas City, MO | Registered: Jun 2003
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posted
I had cedar shafts this year with purpleheart footing. Not sure how heavy purpleheart is but I think it is fairly dense. I think tapering the shaft would help the FOC but then your total weight drops. I hear there are some heavy broadheads possibly coming out soon above 200 grains. Maybe we will see something at K-Zoo?
-------------------- Advice from The Buck:"Only little girls shoot spikers!" Posts: 6321 | From: Hesperia, Mi | Registered: Dec 2005
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posted
Wood is my material of choice too........cedar has about the best stiffness to weight ratio you can get; but Ashby says it can break on heavy impact. Footing could help that and provide some weight up front; but not a whole lot. Using a 190 grain Grizzly on a light/stiff cedar shaft it was still under 15% FOC. For my set up that called for an 85# hunting tapered shaft. 300 grains up front would mean over 100# and tough to get from both a broadhead and shaft perspective. Jeff, can you tell us more about that 'adapter'?
Posts: 8759 | From: Los Gatos, California | Registered: Jun 2005
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I can get about 15% FOC with a tapered, hardwood footed cedar shaft with 160 grain broadheads. Can probably up that a percentage or two with a heavier head, but that's about as much as you'll be able to get out of wood without further tinkering.
One of my shooting partners is experimenting with an internal metal footing. He drills a hole about 3 inches long on the point end of the arrow and fills it with a nail or screw or whatever. Depending on the size of the hole and filler material, he can add up to 100 grains to the end of the shaft.
The insert is centered and small enough so it's still possible to taper the shaft for the point, and, because the insert extends about two inches behind the point, it should aid in strengthening that area as well. Just started putting a few of these together. He says they improve arrow flight. Haven't had a chance to test them rigorously yet though to see how they hold up when shot into tough stuff.
Need a drill press to do this right, and do need to make jigs to hold the shaft and center the drill bit.
Posts: 5854 | From: Wisconsin | Registered: Feb 2004
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I have not tried it so I have no hands on experience. But if you look at the above site, there are four reviews and all gave it high marks.
Posts: 438 | From: Alexandria, Virginia | Registered: Aug 2004
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I just tried an experiment using the screw in adapter Jeff posted. My Fir shaft jumped to 18.4% FOC just using a 170 grain screw in point with the adapter. Apparently the adapter shoves the weight enough forward you can get more yield from the weight.
The bad news is I fail to see how these are any stronger than the other aluminum systems Ashby trashed on...but I still think it has potential. A steel insert instead of aluminum might help.
-------------------- Braveheart Archery www.braveheartarchery.us The web home of Firefly Bows. Shipping rates start at just $1.99! Trad Gang Sponsor since 2006 Posts: 2598 | From: Kansas City, MO | Registered: Jun 2003
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posted
A wood like Ipe weighs about double that of Cedar or Fir, so an Ipe footing would add maybe 70 grains and a 190 BH would get you over 15% but still under 20. Arrow weight would be 700 or so, depending on what it was to start with. And the shaft strength would be much improved; but not your pocketbook.
Posts: 8759 | From: Los Gatos, California | Registered: Jun 2005
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posted
Purple heart wood is very heavy.it seems to be a preferred footing material. If you got some tapered shafts,and footed with purple heart,you could probably achieve 20% foc.
I put a 200 grain field point on a 28" cedar non tapered shaft and my foc was 15%. I'm going to get some maple laminated shafts that are tapered from dinks arrows and see what I can get with them.
I'm going to try footing a couple of them also.I'm going for an arrow weight about 650 grains.
Posts: 601 | From: wv | Registered: Dec 2007
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I alter the amount of taper on my shafts once footed, I just taper the shafts less on the head end and more towards the feathers, works well...Glenn...
Posts: 314 | From: Sunshine Coast. Australia. | Registered: Apr 2003
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