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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derek,
please dont kill yourself doing this(at least until i got your tri-rail).
seriously, though. please be careful, man.
godspeed…. 😯
Lookin good! I can’t wait to see how this thing works when you get it wrapped up and dialed in. Congrats on the great work and keep the updates /pics coming. Take care.
So I got another load of god damned expensive fittings and a set of new valves to test.
New to the scene:
1x 10,000 psi air operated valve
1x 6000 psi to 0-600 psi regulator
Since the solenoid is only 2-way (no exhaust), the main valve just dumps as soon as its triggered (no off).
It was LOUD, and it took some paint off my ceiling. You can see some chips in the picture.
No more air left in my SCBA…
*Adds shoebox to wish list.*
Derek, all you lack is finishing up 😉
Hang in there 😀
Thank you very much Gentlemen, I appreciate your support.
Update:
New pressure sensor is in, and I’ve been spending waaaaay to much time scouring ebay for deals on relevant high pressure, high flow valves.
The newest ass-hole-truth reality has blessed upon me:
A pellet stays in-barrel for about 5 ms with a 24″ barrel.
No matter how wide a throat your valve has, if it opens slowly you’re forked. “Open Time” is the time it takes for a valve to go from fully closed to fully open. If your valve is slow, the pellet will have exited the barrel before your gaping valve actually gets going.
the difference between a valve that takes 5ms to open versus 10ms is hueeeeuuuge.
Anyway, more pics soon, waiting on some stuff to show up. I have to get some real world data soon, too much calculating, not enough boom boom.
make that 2, my old breech has the honor… 😉
Don’t give up! We’re behind ya all the way. (at least one of us is 😆 )
And if you go into the “Design Library” area, there is a profile already made for the Condor.
Program is called ggdt (Gas Gun Design Tool).
Epic thread, subscribed :popcorn:
Nice to see people pushing the hobby & technology forward with ingenuity and a spirit to innovate :8: Keep up the great work!
I’ve thought about it, Jerry.
Boring out the breech would mean greater force imparted on this little guy:
which would “probably” mean that the spring need to be swapped out for something stiffer, else the pressure force the valve open.
which would then mean I’d need to rewind the magnetic coil for more oomph…
Into the valve business it is.
Seems that boring out a valve orifice ought to be fairly easy compared to the total of the project. (Yes, impossible for me, but I don’t have a lathe…just a chrony…) 😆
Yep, I thought the same thing when I saw it for the first time too.
1/32″ orifice size on this lil ‘tike.
According to Math, its top end is about 400fps on a 14.3 gr pellet, 2800 fill.
Might as well be shooting pink marshmallows with tassels on them as far as I’m concerned.
I had feared this moment. I’m going to have to go into the valve designing business.
I’ve seen so many people with valve designs show up in the past, but all I’ve seen are modified AF valves come back from that dark, dark, place.
Either way, I’m finishing the project though. If I ever run into a quick grand, my pea shooter becomes a demi-god with a quick valve swap.
This hobby, she consumes me.
That looks like the micro tank valve. But then there is no telling what pressure you can operate with yet.
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Dudes,
I never imagined I’d be experimenting with high pressure air to this degree, I’m finding it very hard to find sources of info on valve design in general.
The knowledge-base seems to top out at 500 psi. 99% of available solenoid valves are for psi differentials under 100 psi. Spud gunners and paint-ballers are masters of the low pressure worlds (They can get away with brass and pvc diy poppet valves).
P.S. The “thing” as is-is huge, heavy, expensive, and has demonstrated no benefit whatsoever.
The thing as is weighs about 10lbs, adds about a foot of length to gun, is completely untested, but is so damned fun to build. You also learn to want. I need a lathe and mill so badly I can taste the sweet pain of back injury from lifting heavy equipment incorrectly.