Search found 9 matches

by FerdBlu
Mon May 09, 2022 9:42 am
Forum: BB, Airsoft, and Pellet Guns
Topic: Semi-automatic airsoft gun, very simple
Replies: 4
Views: 1429

Re: Semi-automatic airsoft gun, very simple

How do the BBs get into the Barrel? Via a sliding magazine over the barrel?
by FerdBlu
Mon May 09, 2022 9:19 am
Forum: Pneumatic Cannons
Topic: Anyone seen this PROOF yet if so or even if Not check it out
Replies: 11
Views: 337

Re: Anyone seen this PROOF yet if so or even if Not check it out

Have you figured out how it works? It has to be extremely simple, given that the hardware kit he sells, has only very few parts.
Powerwise, you never see the gun when he fires, the video cuts every time he shoots. Seems a bit fishy, he is hiding something...
by FerdBlu
Tue Feb 08, 2022 5:04 am
Forum: BB, Airsoft, and Pellet Guns
Topic: Semi-Automatic Airsoft Pistol
Replies: 7
Views: 1294

Re: Semi-Automatic Airsoft Pistol

I use 0.2g 6mm Airsoft-BBs, i may post the firing video soon!
by FerdBlu
Tue Feb 01, 2022 4:52 am
Forum: BB, Airsoft, and Pellet Guns
Topic: Semi-Automatic Airsoft Pistol
Replies: 7
Views: 1294

Semi-Automatic Airsoft Pistol

Finally my Semi-Auto Pistol project is finished to my liking. It runs on green gas (@12Bar) using a 2-stage trigger with a sliding hammer mechanism actuating the valve. It has NO BOLT, it is using a internal 11 shot magazine, that is sealed with the barrel. It has around 1.2J of muzzle energy and fe...
by FerdBlu
Tue Feb 01, 2022 4:40 am
Forum: General How-To & Discussion
Topic: help with semi automatic airgun
Replies: 3
Views: 1530

Re: help with semi automatic airgun

You may get away with no bolt at all. I have done that multiple times. Just seal the magazine with the barrel so that no air can escape. This makes the whole thing more powerful and simpler
by FerdBlu
Sat Apr 17, 2021 8:08 am
Forum: BB, Airsoft, and Pellet Guns
Topic: Energy Efficiency Formula
Replies: 0
Views: 1929

Energy Efficiency Formula

Hi guys, i was wondering if there was a formula for the parameters(Barrellength and Projectileweight) for the most efficiency, not the most power. For the barrel length i figured the most effective would be that the barrel has the same volume as the volume of the released air (Volume of the Plenum)....
by FerdBlu
Mon Mar 01, 2021 3:34 pm
Forum: BB, Airsoft, and Pellet Guns
Topic: Airsoft bbs rolling out
Replies: 3
Views: 2533

Re: Airsoft bbs rolling out

What i usually do is to drill a small deepening (about 2mm deep with a 5mm drill bit), the BBs get pushed in the Barrel and in the indentation so they cant roll out.
by FerdBlu
Mon Mar 01, 2021 3:24 pm
Forum: BB, Airsoft, and Pellet Guns
Topic: Selfcontained Semi-Auto Airsoft Pistol
Replies: 2
Views: 1799

Re: Selfcontained Semi-Auto Airsoft Pistol

Ah, you made it :) Welcome to the forum! A lot more sophisticated design than I was expecting. I really like the double action trigger, very clever! I suppose the biggest disadvantage though is that it is not easily adjustable, so for example you could be dumping a lot more air per shot than is nec...
by FerdBlu
Sun Feb 28, 2021 3:03 pm
Forum: BB, Airsoft, and Pellet Guns
Topic: Selfcontained Semi-Auto Airsoft Pistol
Replies: 2
Views: 1799

Selfcontained Semi-Auto Airsoft Pistol

Hello guys, this is my first post and please excuse my english :) This is one of many attempts at building a selfcontained semi-automatic pistol with an autonomy of at least 20 shots. This pistol uses a double action trigger, when you pull the trigger it pushes the hammer back until it hits a "ramp/...