[James Harvey]

in reply to: fletching #50121

Ok, so as I understand it,

1. The force applied by the fletching to the shaft is a function of the surface area of the feather (like the lift from the wing of a plane). So as far as stabilizing force goes, short and fat or long and thin, surface area is what matters.

2. As far as speed goes, a feather has to cut through the air just as surely as a broadhead has to cut through flesh and bone. So the same mechanical advantage Doc Ashby discusses with broadhead design applies. The shallower the angle of attack, the greater the mechanical advantage (picture trying to push something up a ramp, the steeper, the harder it is and vica versa).

3. I really don’t know how much this matters but shield cut must create a lot more turbulence at the tail of the feather than parabolic. It’s the same cause behind all the uniformly sloped rear ends of cars nowadays, less drag, more efficiency.

4. I’m told by engineering friends that the most efficient wing is a disc. That is as a relationship between drag and lift. Perhaps the best fletching design is a semi-circle… but if that were true wouldn’t airliners be the same?

In conclusion, I have no idea.

[James Harvey]

in reply to: New to the Forum #49669

Welcome mate 😀

[James Harvey]

in reply to: Aussie turkeys #49662

mhay wrote: I’m curious , Jim . Are those birds vocal ?

The only noise I’ve ever heard them make is a deep, throaty kind of cluck. It’d definitely be legal to do that. I’ve only ever come across a handful of properly wild turkeys and they were very quiet, sneaky animals. My wife gobbles at them all the time. I’m always reminding her “They don’t speak american” 😉

[James Harvey]

in reply to: Aussie turkeys #48609

Haha Ben, too funny.

In truth I really like our turkey’s. I think they’ve just gotten really dumb because they are 100% protected here, so they just wander around suburbs eating peoples flowers, building big ass nesting mounds in dogless backyards and otherwise acting like an animal that has complete contempt for the bald monkeys it shares its habitat with.

I spent most of yesterday in cassowary habitat and was hoping to get a pic to share with you guys too, alas I didn’t find any.

[James Harvey]

in reply to: The Non-Trad Knife Thread #48604

Take it Ben. My wife is American, so I steal expressions that I like all the time. I throw around ‘howdy’ and ‘y’all’ like I was born with it 😉

[James Harvey]

in reply to: The Trad Knife Thread #47571

Skinner, my first thought when I saw that machete was ‘that is the Mi-24 Hind of the knife world. Looks like it can do anything but ugly as sin’.

I was amused when you said it is a spetznatz survival tool. Ugly utilitarianism is a trademark of communist russia eh?

[James Harvey]

in reply to: Armguards #46356

http://www.thegoodhunt.net/Gallery.html

If you go down near the bottom there’s a good pic of Dave’s armguard/sheath.

[James Harvey]

in reply to: What are your favorite trad pictures? #44591

^ Great pic Dave.

[James Harvey]

in reply to: Armguards #44579

The only armguard I’ve ever owned is the wyandotte from 3rivers, for about 15 bucks. I only got it this christmas. I don’t use it very often, but it’s fine. I used a different one years ago from the club storeroom. It was long, from wrist to elbow and had buckles instead of elastic loops and I reckon that was better for range shooting.

{edit} I just realised the one I used at the club is in my profile pic, haha.

[James Harvey]

in reply to: Longbow Turkey #43973

Huzzah!

[James Harvey]

in reply to: What broadheads do you like? #43248

Dr. Ed Ashby wrote: Light game: Deadhead (still have a few).

In my search for good local broadheads I came across a guy that makes a range and one of them looks quite a bit like those old deadheads (less of an arch though). The tusker aztec (they’re cheap as chips too):

http://www.bowhuntingaustralia.com/broardheads_glue.html

I got a delivery of a screw on version recently. They’re a fat old head. The maker has also been working on a heavy, single bevel version of the concorde for me. We haven’t got there yet but he’s determined to do it!

[James Harvey]

in reply to: What are your favorite trad pictures? #41978

R2 wrote:

Can’t see drought conditions can ya?

Pretty much a rainforest mate 😉

[James Harvey]

in reply to: Angry cow vid AND Ben's hilarious deer story! #41736

Ben, that story had me and my wife in stitches 😀

[James Harvey]

in reply to: What are your favorite trad pictures? #40710

I took this one a few weeks ago. A little rock wallaby’s hopping track (if he were walking they’d look very different). Those are 4 inch feathers for scale. We’re not allowed to hunt them, but thought it might be interesting for some of you. That animal is probably about the size of a dining room chair when he’s standing up. I’ve seen little guys as small as maybe a pigeon? I’ve had the little ones licking the condensation off the end of my bivvy bag just before dawn on several occasions. It’s real dry here in the dry season and I guess an enormous camouflaged condom is not very threatening to a little kangaroo rat 😛

I love all the kid pics btw. Can’t wait till my kids can play too! Ben, your little man could be in a shooting manual. Talented little son of a… Sorry, jealousy is a stinky cologne…

[James Harvey]

in reply to: Vacation's over! #40488

Hahaha, is that the place across the road from an infamous church?

[Author]

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