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by jackssmirkingrevenge
Sat Jan 11, 2020 7:44 am
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Reputation system and the new layout

One of the things that seems to have been lost with the redesign is the previous reputation system, forum ranking is now based on post count. I see we now have a "thanking" system but it seems a shame that the previous thumbs up/thumbs down ranks are lost and it has been reset to zero. Stalin would ...
by jackssmirkingrevenge
Wed Feb 26, 2020 7:45 am
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Re: Single pumping hybrid, "Strong Boy"

Great idea! This way you are not limited to spherical projectiles... I had tried to make something similar a long time ago where a solenoid pushes a bolt forward simultaneously chambering the projectile while opening a balanced valve but sadly both my materials availability and electronics knowledge...
by jackssmirkingrevenge
Thu Feb 27, 2020 4:52 am
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Re: Single pumping hybrid, "Strong Boy"

hectmarr wrote:
Wed Feb 26, 2020 4:44 pm
Here a video of the operation.
Wow, the muzzle velocity is much lower than I expected :o

:lol: :lol: :lol:

Looks great, very inspring! An electro-pneumatic repeater will definitely be on the cards once I get my workshop sorted.
by farcticox1
Tue Mar 24, 2020 5:57 pm
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Re: Self contained airsoft, pump action.

trigger mechanism working with light springs on.
trigger (2).jpg
trigger (3).jpg
trigger (1).jpg
by farcticox1
Tue Apr 07, 2020 6:26 pm
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Re: Self contained airsoft, pump action.

A few tweaks and it's ready to go back together again, just the connecting rod to make from the charge handle to the loading arm at the rear.
parts.jpg
by Moonbogg
Tue May 26, 2020 2:27 am
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Re: Propane failing to ignite reliably.

I saw your other post. I see the oxygen bottle sitting there. I also see the igniter right next to the cannon with a short wire, meaning you have to be close to fire it. You are going to die. You can't use propane and oxygen in a PVC cannon. You are going to die or someone else is going to get mangl...
by squib
Tue May 26, 2020 7:49 pm
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bbv 4 u

I have uploaded the balance of the videos detailing the BBV MG for anyone who is interested in having a go at a build. I'd love to see what can happen with more imagination applied. I am practical to a fault and would love to see the "cool factor" buffed by people better at that kind of thing than m...
by jackssmirkingrevenge
Sat May 30, 2020 4:27 am
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Re: Extra powerful homemade weapon.

202 meters per second with a 158 gram projectile. 2438 grains at 663 feet per second.

2379 ft lbs of energy. That's in .45-70 Government territory...
by jackssmirkingrevenge
Sat May 30, 2020 5:14 am
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Re: bbv 4 u

Here is my interpretation of the operating principle:

Image

Good job fleshing it out!
by Moonbogg
Sun May 31, 2020 1:11 am
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Re: Extra powerful homemade weapon.

That thing is an absolute monster. It's amazing.
by jackssmirkingrevenge
Sun Jun 07, 2020 6:46 am
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Modern cellphone cameras and recording ballistic tests

Technology has come some way since the "lazor" era of my Nokia Prism over a decade ago. I had a play with the Slow Motion and Super Slow-Mo modes on my Galaxy S9: https://youtu.be/Z_6Tnh5XUq8 The projectile was a 0.25g airsoft BB at high subsonic velocity. The Super Slow-Mo is particularly interesti...
by jackssmirkingrevenge
Mon Jun 08, 2020 5:33 am
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Re: Modern cellphone cameras and recording ballistic tests

squib wrote:
Sun Jun 07, 2020 7:03 pm
Look out Taofledermaus :D
Jeff is already familiar with my work ;)
by jackssmirkingrevenge
Wed Nov 09, 2011 1:00 pm
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machined APFSDS projectiles

I've been having a play with milled collars to turn small masonry nails into stable darts without any modification of the nail itself. In 6mm calibre, a simple airsoft BB serves as a sabot. Some test firing at 15 metres shows that the projectile is stable and even fired from a low powered small 300 ...
by jackssmirkingrevenge
Fri Jun 12, 2020 3:39 am
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Re: HA-VI

Re-hosted the image so it appears animated in the thread:

Image

A simple idea but at the same time complex in its execution... it looks like it should work!