Brief's indoor firing range with slow motion stills. Action start pg 5 ***CHECK OUT page 23 ! Lightbulbs!! Bowling ball explodes, pg. 30!!

Without a sealed chamber around the cartridge, the explosion won't be that powerful...


But the target must be solid enough the force the tip into the primer...

It's 225 lb draw, not 220 oops, and 350 fps...Pretty sure it will pop, but I expect the carbon fiber bolt to be undamaged.

:crossbow 1:

:crossbow 2:

How about using electrical heat shrink tubing for joining it?

If this doesn't perform well enough, I will try that. The first thing I taught MacGyver, is to use what materials are available.

I need to run to the hardware store soon...

First, I retrieved the crossbow target, heavy foam, from the guest house, and then was offered free trees that are being downed a 100 yrds away...Oak!

I must keep my truck emptied for them now that I'm committed...One load (1.5 ricks) done...It will take them a few hours to refill...

Buying them lunch.

Also found another bowling ball to blow up lol This time with better lighting and clarity...

I will set up the crossbow experiment soon...Promise!

Lucky bugger! We're burning seasoned hardwood and got the gas central heating on. Bought logs and coal in summer as I knew we would use them this year with the price of gas. Nice to have them burning again. Haven't used logs and coal for six years.
I'm working on a new idea...
Hang a lit bulb in front of a hard board so it is touching the board and shoot it with your crossbow setup.

Yeah, I've had the furnace on for a few days now, it snowed yesterday with an 1" accumulation...

These fellas are going to heat my home all winter!

3 big Oaks are being cut!

I bought them lunch, and they are giving me probably $2,000 worth of wood...

So I have pics uploading...A successful failure.


Oh, and I do have another big bulb to shoot with a bolt...against a board, ok but I want a open shot too...


Deleted the old bowling ball pics, some amateur took those

I'll replace them under the same code and link it back to a future current post...If that makes sense??

I LOVE YOUR IDEAS!

Brief

This is a successful failure, in that I like the stills I was able to extract from the video, however as you can see, the 9mm got its head shoved into its ass, and the primer even dented without setting off the primer cap. I knew this was a high probability...

I will redesign the setup, and try again...

225 lb draw crossbow @ 350 fps

I love how the bolts bend and wobble, but strike the target!

Now imagine the bolt hitting flesh, with razor broadheads, and wobbling as you will see!! No chance of survival.


:crossbow 3:

It takes all of 3-5 seconds to reload...If you have the strength and endurance to keep it up LOL

Silent, but deadly...

The first five frames are in sequence, but I have to skip frames, or I would be posting a hundred pics...240 frames per second!

It takes 5 frames for the water to react to the impact!

Last Edited by BRIEF on 11/13/2022 02:42 PM

Research:

Thanks Brief!
The Fastest Arrow on Earth
We have taken this into a new direction. Don’t worry if you don’t use any suggestions, I’m having fun doing this.
Yes, you shoot a bullet into a pouch to make the arrow go faster than a speeding bullet (well, nearly as fast)
[imgur] [link to imgur.com (secure)]

I don't do research, just get crazy ideas for you to research.
Have fun!

I did the researching, just as I read to spark ideas...

I have a chronograph ordered...


[link to www.amazon.com (secure)]

My only concern for the bullet towing an arrow, is making the "pouch" strong enough and light enough, to withstand the pressure of the bullet (2000++ fps).

Kevlar, carbon fiber cloth, is stronger than steel of the same thickness...

It will need mass to move the weight, a .22 wouldn't do it lol

A 12 ga 3" magnum with 2-65 caliber lead balls would work...

Kevlar pouch will need to be 10mm thick to keep from puncturing.



Kevlar cloth:

[link to www.amazon.com (secure)]


shears:

[link to www.amazon.com (secure)]

epoxy:

[link to www.amazon.com (secure)]

Since the bolts are also carbon fiber, I can epoxy the tether to it...

Plausible!


Only drawback is the distance it will be able to travel in my shooting range, but the slow-mo might be very cool...

Posted to refer back when caught up with current projects...

I can help with the costs of anything you need to buy.

The Fastest arrow on Earth V.2.
New, simpler design...
[imgur] [link to imgur.com (secure)]

No, thank you.

I really appreciate that!

I have spent much more for less, lol

BTW God has a great sense of humor...

I'm not out of shape, but yesterday I not only hauled four loads of FREE wood, but also shot the crossbow several times...I know from experience alone it takes up to three days to fully realize muscle soreness...

Today, Day one: ouch

Can't wait for tomorrow!

Luckily, the tree guys cut up the pieces in fireplace size logs, so I can burn the smaller pieces until I recover...I split wood by hand...Sledgehammer and wedges

Anyhow, I have another design ready for testing on the "Rambo exploding arrow" which is the bullet tipped crossbow bolt.

I inverted the field tip and super glued it to the shaft insert, then glued it to the cap of another 9mm...Then secured it with electrical tape for a bit more strength...

It takes 4 lbs of pressure to discharge the round, provided it hits "squarely" on target...

This time I will shoot it at a metal plate, to see if I can get it to discharge the round, before getting fancy with trying to destroy anything with it.

KISS principal: Keep it simple stupid

Version 2 is primarily why I haven't ordered to Kevlar supplies just yet...

The 90* wooden launcher, will be angle iron. I determined that from day one...I'm a metal worker, so I have it in stock.

A simple hinge with metal rod as the fulcrum will replace the flexible screw.

Angle iron + two holes, metal rod, Piece of steel welded to fulcrum rod = hinge

The leverage of the hinge solves the issue with the mass needed to launch the arrow!

Now I CAN use a .22 to give it enough energy to fire the arrow!

Well done!

I see a greater chance of success over the previous design...

Rube Goldberg would be proud of us!

Plus, it will be reusable...kinda like the space shuttle, but with a few less moving parts

looks good.
We will set a world record for fastest arrow/bolt, then have to keep beating it.
Do you think Guiness World Records might be interested? They might want it shot by conventional means but, no matter how it is shot, it should still be fast.
Try an exploding arrow on it if it works.
Have to think of other things to launch.
Worlds fastest tomato, too soft and no food, golf ball, my wife...
I might sign up to GLP so we can communicate privately...

Applied to your design (I will show my original design to save me redrawing it.) slight mod. using standard arrow/bolt, might need a bit of leather/similar to absorb the shock of metal on metal on arrow material where the green nipple is. Maybe another piece on the side that bullet hits, that would need constant replacement.

Taking it a step further, it should generate even more speed using my original arrow design.

[imgur] [link to imgur.com (secure)]

Are these your original diagrams?

If so, I'm going to tell you something.

If, not that's ok...

I'm a little surprised no one has asked any questions about how air pressure can burst a bulb, before the projectile reaches it.


I can help you calculate the pressures generated using vortex calculus...

The same mathematics used to get us to the Moon...

It's not that difficult, I mean, it's not rocket science...

ok, it is, but it's fun!

Original to a point. When I reloaded it to explain upgrade I was suggesting, all the components were all over the place, colours changed and objects re-sized so I had to make adjustments and put the parts together again.
So there are differences but basically the same.
I'm not sure enough of your design to accurately depict it.
I use a 3d program to construct these models.

Well, I love your brain!

I had a teacher tell me that in high school LOL

Thought I should pay it forward

Brief, I'm interested. How can air pressure burst a bulb before the projectile reaches it?
Is it air/vibration being pushed by the bullet in front of it? Or sonic waves?

I am upgrading my slow motion photography skills from Novice to Amateur. If anyone disagrees, speak now or forever hold your peace!


I remade the bowling ball stills, because the first set sucked...

You can clearly see "3" 7.62 x 54 bullets, in three of the frames.

I shot just one of course, but a bullet traveling at 3,600 feet per second is being filmed at 240 Frames per second, so the math tells us we can expect multiple frames of the speeding bullet!

:bb 1:











Last Edited by BRIEF on 11/14/2022 05:59 PM

Air pressure. Same principal as the cone of condensation, that forms at the nose of a rocket or fighter jet, as it approaches the sound barrier...

What is the sound barrier?

The sonic boom heard as the air is divided and claps or slaps back together, after being cut by a moving object...

761.2 MPH at sea level

FYI, since I'm partially colorblind, You may want to use primary colors

You had no way of knowing!

RED, BLUE, Yellow

Your Littlepixie disagrees, I think you are a professional at what you do with your experiments. I think the "Forged in Fire" producers would also be impressed.

Now to make you giggle, maybe even laugh...assuming you get my wee joke. Don't worry I don't want to by it.

Seems I'm better at recognizing patterns than a neurotypical.