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Search: Posts Made By: lyuv
Showing results 1 to 43 of 43
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Forum: Black Powder
03-17-2014, 05:54 AM
Replies: 11
Views: 2,777
Posted By lyuv

Powder charge VS barrel length

Hello all,

I have a 0.45 Philadelphia derringer, with a 3" barrel. I"m looking for the most potent load. With longer barrels, the heavier the load, the faster the bullet. Simple.

However, in...
Forum: Black Powder
09-11-2011, 05:43 AM
Replies: 5
Views: 639
Posted By lyuv

Hi, In "safety" I was referring to the...

Hi,

In "safety" I was referring to the shooting, and not to the making.
The making is WAY beyond the composition itself, which is 75% potassium nitrate, 15% charcoal and 10% sulfur. It includes...
Forum: Black Powder
09-11-2011, 03:19 AM
Replies: 5
Views: 639
Posted By lyuv

Roll your own

Out of necessity I make my own BP. I suggested the same to a fellow BP shooter, and the people around nearly had a stroke, which surprised me.

True, DIY in firearms should be approached with...
Forum: Black Powder
08-24-2011, 12:55 AM
Replies: 2
Views: 798
Posted By lyuv

Strange bore shape

Hi all,

I visited an antique arms display in Germany, and saw a strange thing: Most of the long arms (not sure if "rifle" is the right word) had hexagonal (perhaps octagonal) bore, with...
Forum: Crossbows
08-11-2008, 02:54 AM
Replies: 35
Views: 20,793
Posted By lyuv

RE: Barnett Quad 400 junk

"Problems"? these are not problems.

I guess you didnt buy the recommended 0.5" arrows (by Barnett), so sure the holder didnt hold.

The safety is there for a reason. Liability issues...
Forum: Crossbows
08-10-2008, 09:58 AM
Replies: 4
Views: 3,901
Posted By lyuv

RE: Crossbow conversion

Note that paintball is one option, but I"m talking about the AIRGUN option. Where the thingy shoots 0.22 pellets.

At 600-700 fps, it's matches a good air rifle. I guess a CB can do much better....
Forum: Crossbows
08-10-2008, 12:40 AM
Replies: 4
Views: 3,901
Posted By lyuv

Crossbow conversion

Just found the coolest thing: http://airowgun.com/paint.php
It's a device that converts a bow into an air rifle. The "arrow" is in facta piston. Shooting this "arrow" compressesair into a rifled...
Forum: Crossbows
08-07-2008, 02:27 AM
Replies: 4
Views: 870
Posted By lyuv

looking for any limbs

I build my crossbows, but naturaly, I cant make the bow itself. I"m looking for limbs for a compound setup. Can be new or used, of any brand. Preferably for high end performance.

I mailed...
Forum: Technical
08-05-2008, 03:16 AM
Replies: 1
Views: 749
Posted By lyuv

Temperature effect on limbs

Hi all,

Any material softens with increasing temperature. So theoretically, the limbs of a bow get weaker at warmer climate, and arrow's velocity drops.

Can anyone tell the magnitude of...
Forum: Crossbows
08-02-2008, 05:26 AM
Replies: 5
Views: 1,866
Posted By lyuv

RE: Temperature and performance

I amaware of the air affecting trajectory. the issue I"m talking about is the effect of temperature on the "muzzle" velocity.

I expect the limbs to be softer at higher temps (like any material...
Forum: Crossbows
08-01-2008, 01:05 PM
Replies: 5
Views: 1,866
Posted By lyuv

Temperature and performance

Hi all,

Here it's not uncommon for temperaturs to get up to 100F. In direct sun light object can get much hotter. So a CB can is used at a wide range of temperatures.

How does it effect the...
Forum: Crossbows
07-27-2008, 07:29 AM
Replies: 5
Views: 1,150
Posted By lyuv

CB tuning VS bow tuning?

I know of several procedures for tuning a vertical bow. What comes to mind are paper tuning and adapting the arrow's spine.

I know these things CAN bedone in CBs, but are they normaly done? Is...
Forum: Crossbows
07-27-2008, 07:03 AM
Replies: 13
Views: 16,428
Posted By lyuv

RE: Excalibur Excel Crossbow String or flemish string?

Sorry to be the fly in the soup, but not so! (although a common mistake)

The loop of an endless loop string is EXACTLY as strong as the string itself. True, it has half the strands, but the...
Forum: Technical
07-22-2008, 04:50 AM
Replies: 3
Views: 1,842
Posted By lyuv

The point of field point

What's the point of "field point"?

There are the simple conical target points, that are used for "serious" target shooting, so their at least as accurate as FP. And AFAIK, the TP are intended...
Forum: Crossbows
07-21-2008, 07:17 AM
Replies: 21
Views: 4,374
Posted By lyuv

RE: The Blazer conspiracy

I have NO problems with the Blazer performance. My point is that (it seems) ANY reasonable 2" vane would do the trick. I suspectBlazer has no special property. That's all.

I had a box of raisins...
Forum: Crossbows
07-20-2008, 02:15 AM
Replies: 21
Views: 4,374
Posted By lyuv

The Blazer conspiracy

Heard alot about the magical steering powers of Blazer vanes, so I had to get them. Did, and was NOT impressed.

Yes. The arrows ARE properly stabilized with the short 2" vanes, but the vanes do...
Forum: Crossbows
07-20-2008, 01:53 AM
Replies: 4
Views: 1,219
Posted By lyuv

The point of field point

What's the point of "field point"?

There are the simple conical target points, that are used for "serious" target shooting, so their at least as accurate as FP. And AFAIK, the TP are intended...
Forum: Crossbows
07-13-2008, 06:55 AM
Replies: 3
Views: 2,647
Posted By lyuv

uneven fletching

I dont have access to a fletching jig, so my (helical) vanes are not glued perfectly in all respects: the vain may not be straight, the vanes may not be spaced evenly around the shaft, and their...
Forum: Crossbows
07-13-2008, 06:26 AM
Replies: 15
Views: 2,787
Posted By lyuv

RE: Morrell Crossbow Target bag

Mechanism of target: All we want from a target (actualy, the back stop) is to provide sufficient interference withthe arrow's flight for no less than, say, 5".

Penetration itself is not...
Forum: Crossbows
07-08-2008, 04:52 AM
Replies: 4
Views: 787
Posted By lyuv

Steel for limbs

ALL the modern CBs I know have fiberglass or carbon limbs. However, all "serious" machinary relies on STEEL for springs. including "leaf" (flat) springs.

As far as I know, steel is also used...
Forum: Crossbows
07-07-2008, 05:14 AM
Replies: 28
Views: 3,548
Posted By lyuv

RE: Single red dot VS peep and pins

For several years now we (in Israel) use red dots on our army guns. If we trust our lives DAILY on this technology, I think it's dependable enough for a hobby.
Forum: Crossbows
07-07-2008, 05:02 AM
Replies: 28
Views: 3,548
Posted By lyuv

RE: Single red dot VS peep and pins

Peep and pin setting is perfectly accurate only in the shooting range, where you know the EXACT distance to the target, and the pin is sighted to THAT distance.

But in the field, the distance is...
Forum: Crossbows
07-06-2008, 04:52 AM
Replies: 28
Views: 3,548
Posted By lyuv

Single red dot VS peep and pins

Hi all,

Currently I have a peep-and-pins sights on my CB. My only alternative is a red-dot with a single dot (believe me it IS my only option).

I like the compactness of the red-dot, the...
Forum: Crossbows
05-11-2008, 02:43 AM
Replies: 1
Views: 873
Posted By lyuv

Improving accuracy

Just discovered (RE-discovered?) a significant accuracy issue:

Suffering from my CB's recoil, I installed a VERY thick and pampering shoulder pad. (actualy, it was a stuffed Snoopy puppet ;))....
Forum: Crossbows
05-05-2008, 12:52 PM
Replies: 11
Views: 1,823
Posted By lyuv

RE: Strange patern

I cock with a rope, so the cocking itself is consistent, although it may be consistently biased.

Velocity is in the order of 260fps, so I"m well below 300.

I guess the mistery will remain...
Forum: Crossbows
05-05-2008, 02:13 AM
Replies: 11
Views: 1,823
Posted By lyuv

RE: Strange patern

My broadheads are 4 blade Muzzy 100. Vented and not very large, but I too suspect planing is the problem.

However, I expected planing to cause vertical change in POI. How can it deflect the...
Forum: Crossbows
05-04-2008, 03:55 AM
Replies: 11
Views: 1,823
Posted By lyuv

Strange patern

Hi all,
First, I want to thank for all the replies and responses I got for my previous questions.

I have arrows of 2 types: Type A has field point and straight 4" vanes. Type B is slightly...
Forum: Crossbows
04-24-2008, 02:32 PM
Replies: 10
Views: 1,701
Posted By lyuv

I did it!

I"m overwhelmed with pride, to announce that I, Lyuv, did it. I found a new and innovative stupid thing to do with a crossbow.

Sticking fingers above track level, has been known for centuries....
Forum: Crossbows
04-16-2008, 11:00 PM
Replies: 11
Views: 2,021
Posted By lyuv

RE: Sore shoulder

Another angle


local://116139/98A3C1F3B0E54FDB8C580F8267024E0D.JPG
Forum: Crossbows
04-16-2008, 10:58 PM
Replies: 11
Views: 2,021
Posted By lyuv

RE: Sore shoulder

It's this one.It's homemade, using a Barnett prod that was intended to be 150# at 10", but my CB draws it to 12".


local://116139/B4F590E950BD40148119A48B365200AC.JPG
Forum: Crossbows
04-15-2008, 08:46 AM
Replies: 11
Views: 2,021
Posted By lyuv

RE: Sore shoulder

Yes. VERY much for real. This is what my very own shoulder looks like today. No photoshop. no makeup. only genuine bruise.



local://116139/955A2235D12044C39B4EC48C6E4E8A47.JPG
Forum: Crossbows
04-15-2008, 04:04 AM
Replies: 6
Views: 1,250
Posted By lyuv

Silly fletching question

Hi all,
I"m about to do my first fletching. I needs to be helical, since there will be broadhead at the bussiness end.

For the job I have plastic vanes and no fletcher.

The problem: I...
Forum: Crossbows
04-13-2008, 01:30 AM
Replies: 11
Views: 2,021
Posted By lyuv

Sore shoulder

After 10-20 shots my shoulder sores like hell.
The CB is rather light weight (4lb), but far from being a monster:recurve, 200lb 12" draw and 450grain arrows.

Is it common for a CB to kick like...
Forum: Crossbows
04-13-2008, 01:14 AM
Replies: 3
Views: 5,165
Posted By lyuv

Trajectory calculator

Hi all,

Do you know of a program or a web site, thatcalculatesarrow's velocity from it's weight and balistic drop at given distances?

Thanks,
Yuv
Forum: Crossbows
04-10-2008, 05:23 AM
Replies: 0
Views: 666
Posted By lyuv

The bullet bolt

Hi all,
How about THAT bolt? ("arrow"? no way)

I estimate it's about 4" long. There is no reason it cant weight the same as "regular" arrows. No need for fletching, as it relies on HUGE...
Forum: Crossbows
04-10-2008, 01:39 AM
Replies: 11
Views: 2,389
Posted By lyuv

FOC mystery

Hi all,

Just measured the FOC of my 20" 2216 arrows, and was shocked to find it's only 5% with 100grain broadheadand overall weight of 426 grains. 125gr field point made only 9%.

I read...
Forum: Crossbows
03-30-2008, 05:47 AM
Replies: 3
Views: 930
Posted By lyuv

RE: Puting a CB to the test

I"m from Israel. The law is very unclear about archery. Untill several years ago crossbows where sold openly, but now the custom authorities confiscate CBs being imported through mail or brought on...
Forum: Crossbows
03-30-2008, 01:04 AM
Replies: 3
Views: 930
Posted By lyuv

Putting a CB to the test

Hi all,

My CB is homemade, based on a Barnett recurve prod. (11" draw at about 170#).

I"m new to CBs, and in my country this is a non-existing area. So I have no points of refference as to...
Forum: Crossbows
03-29-2008, 04:56 AM
Replies: 6
Views: 1,669
Posted By lyuv

Is shorter better?

My CB is capable of shooting 16" bolts, but I have 20" ones. Is it worth the bother to shorten them?

And in general - is it preferable to use the shortest possible bolts? What is the best length?
Forum: Crossbows
03-27-2008, 02:52 AM
Replies: 14
Views: 8,818
Posted By lyuv

RE: String wax for rail

I built the CB from scratch, using a barnett recurve prod. The draw is 11"170#. The string is of B50, served with nylon.

The wax is VERY viscouse. Dont I lose much velocity due to it's...
Forum: Crossbows
03-26-2008, 02:32 PM
Replies: 14
Views: 8,818
Posted By lyuv

String wax for rail

Hi all,
I cant get a specialized rail lube. Only string wax (Tex-Tite by Bohning). How bad is it to use onlywax (applied both to serving and rail)?

Do I loose velocity or damage the string?
...
Forum: Crossbows
03-03-2008, 04:00 AM
Replies: 6
Views: 873
Posted By lyuv

RE: Short or long string?

Thanks,
BUT - the unstrung prod measures only 27" from nock to nock, and 27.6" from tip to tip, so a 29.12" string seems too long.

I would be eternally greatfull if someone could measure an...
Forum: Crossbows
03-02-2008, 12:59 AM
Replies: 6
Views: 873
Posted By lyuv

Short or long string?

Hi all,

I"m building a CB using a Panzer V prod. I can't find a reliable figure of the string length (even the manufacturer gives a conflicting data).

Assuming a correct distance between...
Showing results 1 to 43 of 43


 
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