Second quickie question I guess... Regarding writing dimensions
There are 2 dimensions for O rings... inner diameter and the diameter of the cross section. Example: 2x2mm --> ID=2mm OD=6mm.
Is this the same for pipe dimensions? I'm uncertain about the dimension 25x2.5.
Does it mean ID is 25mm and the walls are 2.5mm witch means OD is 30mm?
Or is 25mm the OD, the walls 2.5mm witch would make the ID 20mm? I think the ID is 20mm but I'm not so sure anymore because of the way O ring dimensions are written.
Probably would have big issues with multiple feeds, unless you're running exclusively fully auto with a very short cycle time. I don't think we can say for certain if it will or won't work.
Joined: 15 Mar 2007 Posts: 21778 40612.39 Spud Bux
saefroch wrote:
Probably would have big issues with multiple feeds
Actually for semi-auto or low rate of fire it would be perfect, it's when fast cycling rates are involved that "tee" type magazines without blocking bolts tend to misfeed or doublefeed.
I used such a magazine in my marble autocannon, at low ROF worked a treat:
I didn't ask for O ring dimensions nor do I even need O ring dimension chart
But I found my answer by calculating the estimated weight of the pipe and comparing it to the advertised weight per meter... Pipe dimensions are Outer Diameter x Wall Thickness - which makes the ID 20mm in my example.
How much energy is stored in 100cc of air at 10 BAR, and 50 cc of air at 20 bar?
This should be a stupid question, but after trying to cross-reference several sources across the internet, I'm getting conflicting results; sometimes by a factor of ten. There is so much "air-car" spam out there it's nearly impossible to sort through the crap.
The numbers I came up with were 200 and 300 joules, repectively.
I was thinking that by angling the mag 45º PBs would be pushed backward towards the valve, but held back by a stop. Do you get it, or am I making some false assumptions?
Joined: 15 Mar 2007 Posts: 21778 40612.39 Spud Bux
Lockednloaded wrote:
I was thinking that by angling the mag 45º PBs would be pushed backward towards the valve, but held back by a stop. Do you get it, or am I making some false assumptions?
Angling the magazine won't make it function any differently from the Tee style magazine linked to above.
I have a 42 mm ID steel pipe, (welded)
it has a nasty burr on the inside, wich I dont like.
I'm going to make a QDV with it, and the O-rings wont seal on it, and get killed.
What is the fastest and most efficient way to remove it?
I know there is some topic floating around, about techs QDV. he also had a pipe with a burr. I used the search, but I haven't found it.
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