Finished my Pnuematic Trigger Frame...

[noahyay]

devil mag is soloniod like "MY VERT GRIP EMAG"

[SlartyBartFast]

Anyone consider using a cartridge valve?

http://ebmhost13.ebm.bestsoftwarehost.com/iwwida.pvx?;products_no_tree

http://ebmhost13.ebm.bestsoftwarehost.com/images/P04B0087P.pdf

Once final placement of the cartridge valve and cartridge cylinder were determined, a trigger frame could be made with the cavities required for each and the connecting airlines internal to the frame. :)

The "ultimate" advancement? With the internal cavity measurements of the LP reg, you could perhaps drill/machine a trigger frame that would serve as amanifold for the regulator, valve, and cylnder. All pats internal, no hoses or connectors.

["the FitZ"]

Okay finally got mine up and running...sort of. I have to use the ult b/c I don't have an rt on/off yet. There is some short stroking. But occasionally the bolt I used in my plunger gets in a bind or something and locks up the system. Actually it's not venting and the gun doesn't provide the reactivity to kick it back. What's causing this? Why wouldn't it vent and cycle right. Most of the time my trigger stays back and when I pull it forward the 3-way resets as does the ram. Then it's all gravy.

[phishphen]

..... Actually it's not venting and the gun doesn't provide the reactivity to kick it back. What's causing this? Why wouldn't it vent and cycle right. Most of the time my trigger stays back and when I pull it forward the 3-way resets as does the ram. Then it's all gravy.

if the trigger is staying back, thats not what you want....the trigger needs to come full forward for the SMAV3 and MPA3 to reset.....the SMAV3 should push the trigger forward, if not, then the SMAV3 doesn't have enough force to push the trigger forward, try using some opposing magnets to assists in moving the trigger forward

the guns reactivity should NOT help reset the MPA3 in anyway....the internal spring for the MPA3 is plenty sufficient to reset the piston as long as the SMAV3 is venting the pressure.....good luck.....

[Wassupstranger67]

Okay finally got mine up and running...sort of. I have to use the ult b/c I don't have an rt on/off yet. There is some short stroking. But occasionally the bolt I used in my plunger gets in a bind or something and locks up the system. Actually it's not venting and the gun doesn't provide the reactivity to kick it back. What's causing this? Why wouldn't it vent and cycle right. Most of the time my trigger stays back and when I pull it forward the 3-way resets as does the ram. Then it's all gravy.

Use a higher operating pressure for your 3-way, I half stroke mine every time I get it walking really fast. I think it is my tanks regulator not keeping up with my gun. So a flatline or dynaflow reg might be a must. I just have a 5-year-old crossfire tank.

[Big'n slo]

Not sure if its been posted but heres a crappy pic of the inside of SMAV3



I pulled the spring out and tested it but I had a continuous leak out the N.O. port.
Put the spring back in and the leak stopped.

Heres a pic of the test setup, i was testing a couple different rams.

[phishphen]

Use a higher operating pressure for your 3-way, I half stroke mine every time I get it walking really fast. I think it is my tanks regulator not keeping up with my gun. So a flatline or dynaflow reg might be a must. I just have a 5-year-old crossfire tank.

make sure you limit the sear travel by putting a stop behind the sear, allow the sear just enough travel to fire the gun and then set the stop......and yes, make sure your tank can keep up



Big n Slo: Thanks for posting the pics, very informative........

[SlartyBartFast]

Looks really great guys.

What are the two rams in the pictures Big'n Slo? Part numbers please.

How about this idea for pneumatics:

Would it be possible to create a pneumatic circuit to make a pump mag?

Instead of resetting the bolt, the pump peneumatic circuit could react by not allowing the ram to be repressurised until the pump is activated...

Or, a check valve that keeps the ram from depresurising through the input from the trigger and requires another valve to activated by the pump. (that has the promise of being able to be made into an auto-trigger pump....

Too bad I have no clue how to draw this up in an animation. ANybody know of some good computer aided pneumatic design programs?

[Big'n slo]

McMster Carr #'s

Small Ram: Stainless
P/N; 7725K1
Bore: 5/32"
Stroke: 1/4"
Retracted lg: .87"
Force: 2lbs @ 100psi

Large Ram: Brass
P/N: 6604K11
Bore: 1/4"
Stroke: 1/4"
Retracted lg: 1.55"
Force: 4.9lbs @ 100psi

I also have an MPA3 to play with.

I doubt the stainless ram will work but I had to at least play with it a little


Did you guys call Parker to order the MSV-1's or is there an online order someplace?

[Duck Hunt]

Hey Big, the MSV-1's are Fabco Air products ( http://www.fabco-air.com ) And I got mine through a Fabco Dealer a hour away. I have 1 MSV-1 and two MSV-2's (they have a lever kinda like a micro switch) If you want one, its yours!

Parker has mini 3 ways but they're not rated as close as clippards or fabco's but they DO have verrrrrrry tiny catridge cylinders like the one I got

Sean

[Wassupstranger67]

[Jerhew]

you probably couldve just done a search on this...
i dont think you'll need to worry about flow rate in any hpa tanks these days...
i know you can get a 68/4500 for around $200...
pick a brand...
crossfirel...pure energy.....etc

[noahyay]

just get a new reg for ur crossfire but its probably fine- i dont even think that that is the problem

try running just the trigger frame and not the gun and see if you get the same problem

["the FitZ"]

Happy Happy

I just got back from the field and the gun worked flawlessly. No shootdown. Only short-stroked like 2 or 3 times. The thing purely rips. Honestly I thought I'd go up there and it be a big screw-up. Partly b/c last night I tightened up the set screws to get the grips on and one of them fell off causing the ram to fall. I didn't have any air to test once it was back in either. So I was just hoping for the best. And I got that and so much more. Thanks so much for all your help guys, this thing is so frikin sweet

[phishphen]

....

Nice Job Fitz!!! Congrats.....
if you can get vids or pic up, that'll be great......tell us the parts you decided to go with?