Semi
I’ve found myself investing a significant amount of time and effort on turning the condor into a semi auto, eat all comers, beast.
So I’m now wondering…
Is it just me?
I’ve got 1:1 a plastic (laser cut acrylic) proto going for the feed mechanism, and a working concept for an e-valve that can handle the rpm.
Costs are redonculous, between valves, machined parts, and ic’s I’m looking at more than 400 bucks in parts alone.
As you all know, I’m a noob in many fields.
I guess my question is : Is there any interest, or is it just me?
If there is, I’d love to show you guys the semi proto, perhaps get some feedback?
( I saw the last guy that showed up with a semi concept…I’d rather not go that route.)
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jeez, derek. ive never seen a program like that.
i dont understand it, so what appears to be the weak link?
So here’s a bit of a news that I saw coming, but still depresses the shit outta me.
This flow calculator (which from what I’ve seen is scary accurate) has shown me that the flow of my valve is absolutely not large enough to push pellets to speeds even comparable with a standard condor valve.
$150 Solenoid (What I’m working with)
Condor Valve
$1125 Solenoid (Note the 43 gr pellet weight)
This bad boy, dumping 60 psi in 3 miliseconds would definitely do the trick though. The damned thing costs almost as much as the lathe I’m eyeing.
Wow does this suck. There’s nothing like realizing the true infeasibility of a pet project. Even if these valves were cheaper, I was expecting to be able to scale this up to big bore levels, which just ain’t happenin’ with these numbers.
God damn you, Math.
Real tests to confirm…though since I don’t own a chrony, it will have to be side by side penetration testing.
Broke the pressure sensor.
Fragile fragile electronics combined with rabid wrenching = lesson learned.
Thanks all, most everyone in my immediate surroundings just thinks I’m nuts.
The pressure sensor is wired and talking to the chip, its so sensitive that it shows a pressure difference when I squeeze the tank with my hands. Thats a good thing.
Definitely got my attention….
You have to excuse my pessimism as since being on this forum since it’s inception and a long time member of the old TOG, we’ve seen many, many folks come along with great ideas ON PAPER and in one case a few blurry cell phone pics of something that was supposed to resemble a product made by a mystery machinist…
but… this is looking really good! Please keep the pics coming.. I’m sure everyone will be watching this thread with bated breath in hopes that it comes to fruition. Even if you produce something that turns out not to be feasible to produce for the masses, it’s an extremely cool project!
Nice
Remember – they laughed at Orville and Wilbur……then… they all wanted a ride. 😉
$400 is chump change in this hobby. I’ve spent more than that in pellets in the last month. Not to mention scopes, barrels, LDC’s, valves, etc, etc, etc,.
Did I mention two more rifles?? 😯
Don’t worry about the cost. It will only get in the way of your success.
Besides, the new Evanix Speed is $1700.00 and you think they’re just going to sit on PA’s shelves? No way. They’re won’t be able to get them boxed up quick enough. 😆
If you can make it work reliably, accurately, and simply…
Well, let’s just say, “build it and they will come.”8-)
By the way, name’s Dave.
Airguns of Tulsa, what’s your name? Mine’s Derek.
I appreciate the encouragement!
So the parts that I got in today are the ones that complete the setup I need to be able to screw this frankenstein onto any standard AF frame.
Here’s what I’m working on at this very moment:
I rigged the pressure sensor like a month and a half ago and I’m afraid I didn’t take very good notes on the wiring so its sorta back to square one.
The good news is that I have all the hardware required to screw this tank onto my Condor…
That means that I’ll finally have a chance to see what this valve can do.
Honestly, with the orifice size it has, I’m not too optimistic, but I do have 24″ to accelerate the pellet, and very accurate timing/pressure controls, so we’ll see.
Worst case, I already have a bigger bore special order prototype version of this valve coming in the next few weeks.
Man, I love this stuff.
Dude – don’t stop now, your almost there!
Ok, I’m pumped.
I just got some parts I’ve been waiting for, thank you Subssonic!
“Unrelated”:
Here are some pics of the extra extra large scale, acrylic mockup of the semi mechanism. See if you can make any sense of it. Bolt Action pull/Semi reciprocator assembly not pictured.
(Removable rotary clip)
Ill keepin a damn good eye on rhis link ill pm u at some point just wanna get some fine details concept and to see if i can help in any way( most likely not) xx
Woohoo!
Lets see if this thing can breathe like its supposed to first!
Cost: Right now its pretty bad, as in over $400 in just components but if this proof of concept has legs I’ll be working on getting the price down. Plus, buying larger numbers of the more fancy pants-components will bring down cost a bit…but…no more getting ahead of ourselves here.
So far this is just a bunch of fittings on a desk.
Better make a bunch of ’em. We all want one 😆
I would even just have the valve and trigger as there will be no spring and hammer so apart from the solinode in the valve no moving parts no no hammer recoil or slap noise no nearly breaking my thumb to cock the rifle. U have my attention and i would have that just alone if u say it works im very intrested very!!!!!
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The magic number is the “flow coefficient”. Cv
Since these solenoids are basically magnetic coils moving a pin against 3000 or so psi, the orifice size dictates not only how much flow you get, but how hardcore the mechanism that moves the pin is, in addition to manufacturing tolerances and im sure about 30 things I’ve no idea about.
The only difference between the super pricey solenoid and the one I’m working on is the size of the orifice, which dictates the size of the plunger, and the characteristics of the coil, and so on and so forth.
I’ve no idea what application the monster solenoids are for, but at those prices im sure haliburton is involved somewhere.
Here’s a pic of the orifice size on the current solenoid, poor little guy: