Forum Replies Created
-
AuthorPosts
-
in reply to: Merry Christmas bow hunters! #34675
Merry Christmas Jim, and to the rest of you hunyackers too.
Eighteen months will fly by. If you have free time, don’t waste it on the ‘puter. Spend it with those wee wonders.
I know I speak for all when I say we look forward to your return to the fire.
Good luck, and happy new year too!
in reply to: Thinking about trying wood arrows #32408I’ve not bought arrows from Dinks, but I have bought a bunch of his targets. I like ’em!
in reply to: Could this be the best knife sharpener ever? #32401I have used this method in a pinch – Cleaning about 400 lbs of flounder, mullet, stingray, etc after a night of bowfishing 2 summers ago. It worked and made the task go faster.
But it wore the top of my window down pretty well. Now, instead of a rounded glass edge, it’s sort flattened off. No big deal, I just have to change the angle the next time I hone a knife on it.
But if you used this method a bunch, your window might not close all the way, leading to rain getting in maybe.
in reply to: 70lb recurve or longbow #26836It all depends…
Shooting a bow that heavy requires a lot more commitment than a lighter bow. It takes more physical conditioning to keep the body happy. If you lay of shooting a bow like that for a week, when you come back it will be much harder to shoot again.
Then there is the increased risk of injury to joints, ligaments, and tendons.
Then there is the likely reduction in accuracy. Shooting a bow that heavy is hard to master.
Some folks can handle a bow like that without consequence. Not me. I could probably work up to it, but it would be a constant struggle to stay there.
Byron Ferguson shoots a 70 lb bow. If you are built like he is, go for it. Otherwise, I’d think twice about it.
And if you decide to move up in weight, I’d suggest doing it in smaller increments and over a long period of time.
in reply to: Arrow Weight & Paradox? #23651R2 wrote: …Doc whilst your deep thinking, http://www.ponderabout.com/archives/3225/zenos-paradox-of-the-arrow.aspx.
I like it! And that helps us understand when we find out that time is not continuous, but granular. And the smallest increment of time is 10^-33 second.
Reminds me of the other space-time conundrum: If a man walks across a room to leave by the door, he must first traverse half the room. And then he must again traverse half the remaining distance to the door, and so on and so forth… By this observation and reasoning, the man can never get to the door, because he must always traverse half the distance first…
Now I’m wondering what my chances are of making it to the bathroom to get rid of all this coffee 😳
in reply to: My Java Man Elkheart: The Four Year Wait Is Over #23636Very Nice! Have fun shooting it… And definitely take care of that shoulder.
in reply to: Arrow Weight & Paradox? #23625Sometimes it helps to understand the behavior of systems by breaking those systems into their simplest parts, and looking at boundary conditions.
An arrow is a system which includes a spring and a mass. We can look at one boundary value of this system where the spring constant stays the same, but the mass goes to zero.
In this case, the spring would be stretched (as the bow is shot) and when the force was removed (arrow leaves the string) it would return to it’s rest state and stop (as there is no mass, there is no inertia to store the energy released as the spring relaxes)
Thus it can be seen (all else being equal) that the lighter the arrow, the faster it will recover from paradox.
Other factors that affect vibration damping in arrows would be internal molecular resistance to bending, and the air resistance on the feathers/shaft from moving through the air. There may be others. The internal molecular friction in the aluminum arrow is much much less than in wood or graphite (that’s why they make springs out of metal and not wood) and that’s why aluminum arrows tend to oscillate all the way to the target. Nothing to do with weight really.
Taken together, the mass and spring contained in the arrow along with the forces affecting the arrow form a system. The system can be under damped, over damped, or critically damped. Critically damped is what you want. This means that the arrow goes through the least number of oscillations and that each oscillation is much less than the last in magnitude.
Carbon has the highest molecular friction, lowest density, and highest modulus of elasticity. Thus it oscillates less than the other materials.
in reply to: Let's See Your Fletching #22625Looking at Patrick’s and SH’s arrows, I just can’t help but give advice where none has been asked…
What I see is that SH’s fletching is located about where it should be on the shaft. Patrick’s fletching is too close to the nock.
I used to be a compound shooter and used a release. I fletched my arrows as close to the nock as I could. This helped maximize the stabilizing effect of the fletching. But…
And here’s the but. When you shoot with fingers, I found that the fletching should be moved down the shaft so that your fingers can unwrap from the string without impacting the fletching. I learned this while troubleshooting the subtle but erratic nature of my arrow impact on the target. 😀
in reply to: Traditional croc hunting in Arnhem Land #21166I was looking forward to seeing a picture of the dogs tung rock….
Interesting story. Thanks!
in reply to: Practice for Form #20729… Now instead of using a rope, try it with a thin piece of white cotton string. It will get you more focused…
in reply to: Thinking about trying wood arrows #19066DK wrote: Steve,
…What is 9 inches of taper on the back end mean. I thought the back end tapered just enough for the plastic nock. … What length do they come in when they are completely raw … I think I will get the four sets of three test kit starting with 65lbs and work up. I shoot around 58lbs at 31.5 and will have around 150-200 up front. Does that sound about right?… One more thing do you just use the pencil sharpener taper tool on Doug fir?
I am excited to try this. Once I get some money. Got a brand new baby and momma may not be to happy with me spending money on test kit material.:twisted:
Anyway thanks for the help everyone,
Doug
Tapers – There is the point taper, the nock taper, and the shaft taper. The 9 inch shaft taper basically tapers the last 9 inches of the shaft from 11/32 down to 5/16. The shaft taper ends at the start of the nock taper, which will fit a 5/16 nock.
Length – I think they come 32 inches. The website will tell you. You can also ask for longer shafts.
Spine – I’d start at 70#’s for the test kit
Taper Tool – Douglas fir tends to gouge with the pencil taper tool. Tapers should be sanded. 3Rivers has a $10 or so tool that will let you sand the tapers on a disk or belt sander sander.
Momma – Buy her some flowers and tell her she’s wonderful, then she’ll be ok with whatever you want to buy 8). Remember… If momma ain’t happy, nobody’s happy.
in reply to: Thinking about trying wood arrows #18316DK wrote: Any suggestions on where to buy the best quality shafts would be appreciated. There are a lot of companies out there. Doug
I’m playing with Douglas Fir and it seems like a really good arrow wood. Super fine grained, almost no runout, strongest softwood.
I bought a test pack from surewood shafts. you can get a dozen arrows with 4 sets of 3 spines to test. I did this to get in the ball park.
The arrows I got from them were perfectly straight, no grain run out, with 9 inch taper on the backend. After finishing the arrows, they all weighted exactly the same, 620 grains.
I’ve since ordered a dozen in the 75-80 spine weight which seeems to work with my 55lb longbow.
In testing, these arrows shoot the same speed as my carbons of the same weight. And I can’t really tell any difference in accuracy or flight.
There are 2 main suppliers of douglas fir shafts. Surewood Shafts and Hildebrand Arrows. I think 3Rivers gets theirs from Hildebrand.
in reply to: Changing bow shelf?? #17361Man that’s going to be a heavy arrow Whew! I doubt you’ll gain any FOC as the ash is so much heavier than the cedar.
If it was me, I’d put those 300’s on your 80 spine cedar arrows and see what you get.
I don’t think you can build a shelf out enough to drop your spine down to 60-65, but who knows.
There’s only one way to find out… Have fun!
in reply to: Practice for Form #17358R2 wrote: Steve, I was playing with the string deal and also a perpendicular line drawn on my target butt. Seemed helpful but it was hard to explain to the club about the 1″ wide, up and down black stripe that just appeared on all the 3D targets. 🙄 😀
My score didn’t go up but that mighta had something to do with the lumps on my head.
You are a wild man!
in reply to: Longbow shot while sitting #17356been there, done that. Closest my behind is going to get to the ground is the hammock seat.
-
AuthorPosts
