[jpc]

in reply to: Splinter on recurve. Back it? #12936

A good close pic should be a good start

[jpc]

in reply to: Feather Curiosity… #12512

Never heard bare shafts more accurate than arrows with feathers , never saw bare shafts for competition or bowhunting

So, why not to look at this problem from the other side ?

I mean have a close look at what can be wrong with the way you set feathers on your shafts

[jpc]

in reply to: Spring Bear #53020

Super shoot

How much this bear weighted ? Or how long from nose to tail ?

[jpc]

in reply to: Trajectory & Weight #53016

I think 75 grs make a diference after 15 meters

On another hand lights arrows lose speed faster than hevier

Everytime you moove weight you have to train a few days

Brain is a nice machine but you have to be patient to get a new goal

[jpc]

in reply to: Limb tip protector #43397

Upside

http://www.lx-archerie.fr/epages/980418005.sf/fr_FR/?ObjectPath=/Shops/980418005/Products/90125

Bottom

récurve

http://www.lx-archerie.fr/epages/980418005.sf/fr_FR/?ObjectPath=/Shops/980418005/Products/90039

LB

http://www.lx-archerie.fr/epages/980418005.sf/fr_FR/?ObjectPath=/Shops/980418005/Products/90040

[jpc]

in reply to: Wood Arrow Advise #37389

Bears are very little resistant to penetration and have very thin skin

45 Lbs with 400 grains arrows are enough for a 250 Lbs bear

In order of importance to have a fast and clean ( human ) kill

1 / Presicion Kill zone

2 / very sharp blade

3 / single blade

4 / arround 10 Lbs / bow poundage

You can get penetration with single bevel blade

without add to much weight

One of my friend killed 3 african buffalos with Dwyer LB set @ 65 Lbs and 750 grains arrows

His secret : he never shoots @ more than 12 meters !

[jpc]

in reply to: Wood Arrow Advise #37167

wojo14 wrote: OK, my bow right now is a 51 @ 28. 58″

It is a Striker reflex deflex long bow.

My draw is 26.5″

I know my arrow weight 525 gr built.

5″ trad cut feathers.

Dont get me wrong, the arrows fly great!

Just looking to increase FOC. I still want to shoot wood.

I love making them.

51 @ 28 must be around 42/44 Lbs at your 26 1/2 That is to say you shoot something like 12 grains / Lbs

If you hunt very heavy game that can be good, but you must shoot very close

On an other hand spine selectors for wooden shafts are the same from the old time when bows were only made with wood

To day with moderns bows you should choice 61/65 wood shafts

And find a better balance between straight fly and arrows weight

I killed european wild boars with 9 grains /lbs and 420pounds bear in Canada with 2117 alu and 125 grains Zuikey broahead

[jpc]

in reply to: Wood Arrow Advise #36073

Your arrows are 50/55 ok, but what about your bow ….

Self, LB or recurve center shoot or not ? fiber or carbon or self bow ?

Draw weight ? and draw lenght ?

Also interesting to know bare arrow weight ……..:roll:

[jpc]

in reply to: cutting carbon #32364

http://www.ebay.fr/itm/Mini-meuleuse-perceuse-ponceuse-graveuse-type-DREMEL-Loisirs-creatifs-135W-/121303957137?pt=FR_YO_MaisonJardin_Outils_OutilsaMain&hash=item1c3e477e91

You should find same at US EBAY

And so you can put footing on your carbon arrows :

[jpc]

in reply to: Noisy Recurve #32361

:D:D

[jpc]

in reply to: Noisy Recurve #26661

Try it It works very well

Any material you can glue will do the job

http://www.3riversarchery.com/Calf+Hair+String+Groove+Silencers_i3559_baseitem.html

[jpc]

in reply to: Widow test drive #8554

Not all foam cores or composite cores are equal. Some are made with polyurethane resins and the stronger materials made with the more expensive Epoxy resins. The density and strength of the material is based on the percentage of filler to resin and the characteristics of the material is based on what filler bulks out the resin system, stronger weaker lighter heavier more dimensionally stable less dimensionally stable. The elasticity of the core is meaningless. Lets assume that the composite core is half as elastic strong as bamboo. Okay then here is an example just and example and not and actual situation just and approximation, then assuming the bamboo core alone without the composite bow facings generates a bow drawweight of 1Llbs and the composite core .75lbs and the bow weight is 55lbs So the bamboo core is responsible for 1.8% of the drawweight and the Composite core is responsible for 1.3% so the difference in bow weight generated is 0.5%. 0.5% is nothing and would hardly affect the speed at all. However a 20% weight reduction in core mass is about a 7% mass reduction in the whole limb and that is significant and represents about 2 fps. But some composite cores will be roughly the same weight as the wood core and so no different.

[jpc]

in reply to: carbon and foam core limbs #55338

All foam cores or composite cores are equal. Some are made with polyurethane resins and the stronger materials made with the more expensive Epoxy resins. The density and strength of the material is based on the percentage of filler to resin and the characteristics of the material is based on what filler bulks out the resin system, stronger weaker lighter heavier more dimensionally stable less dimensionally stable. The elasticity of the core is meaningless. Lets assume that the composite core is half as elastic strong as bamboo. Okay then here is an example just and example and not and actual situation just and approximation, then assuming the bamboo core alone without the composite bow facings generates a bow drawweight of 1Llbs and the composite core .75lbs and the bow weight is 55lbs So the bamboo core is responsible for 1.8% of the drawweight and the Composite core is responsible for 1.3% so the difference in bow weight generated is 0.5%. 0.5% is nothing and would hardly affect the speed at all. However a 20% weight reduction in core mass is about a 7% mass reduction in the whole limb and that is significant and represents about 2 fps. But some composite cores will be roughly the same weight as the wood core and so no different.

not all composite core materials are equal.

Hyperflex cores are lighter in weight over wood cores by approx. 20% and that gives the bow 2 to 3 fps speed advantage. Also due to the lower limb mass there is less hand shock and so a smoother after shot and lower vibration

[jpc]

in reply to: carbon and foam core limbs #55146

With Foam and carbon you can have same arrow at 42 Lbs than a BW at 55

same arrows, same archer, same draw length

And the bow is stronger against torque than any other one without carbon

Ford or Ferrari can do same trip, but there is some différence

Why not have the best when money is not a problem

some console themselves by saying that carbon is unnecessary but would be happy if they could have one to try

[jpc]

in reply to: Widow test drive #48840

@ same weight same lenght same arrows a 42 Black Douglas from Border with HEX6 limbs shoot faster than a BW @ 50

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