ATI Libert/Freedom Custom valve

[USAFANG6799]

That part # is different than the one I have.
Mine is: 170015pk12
10x5.2x0.5mm
Mc Master

Maybe this explains the different results?

[RDB]

Matt, i just went back and dug up my original post in the thread ( any us importers carry this gun) and copied and pasted that # here.

[USAFANG6799]

Well like I said this is probably why your belville washers work and the others didn't. I got my part # from Robert Feddeler.
I'll be sure to let him know. I do know he's following this link but will send him a PM for a heads up.

Goes without saying that I'm super happy you chimed in on this conversation and caught this error.
MANY MANY THANKS!
I'm sure the rest of the guys feel the same way.

[USAFANG6799]

I just sent Robert Feddeler a PM

[Hawkeye51]

Matt

Glad you were following, and chimed in. I can't even find the part # you listed in the catalog. Look it up and see what the ratings are for the washers you ordered and what the differences might be to the ones Rob ordered.

This would be HUGE if most people were trying the wrong washers.

Wonder which ones Duy, or Stephen tried on their regulators   Hope they see this and let us know.

[cosmic]

Duy used the Belleville Disc Spring for 5 mm Shaft Diameter, 5.200 mm ID, 10 mm OD, 0.5 mm Thick
96445K215

[RDB]

Duy used the Belleville Disc Spring for 5 mm Shaft Diameter, 5.200 mm ID, 10 mm OD, 0.5 mm Thick
96445K215

These are the ones i originally posted.

[USAFANG6799]

Mike it's possible that the number I'm reading on the plastic envelope is a vendor # that McMaster buys it from?
I no longer have the packing slip from McMaster because.....well I knew a day like this would come up and just to
make things PIA I threw the slip away some weeks ago 
I'll sign into my McMaster account and find the info from when I ordered them.

YEA...following this link and catching this is my saving grace for throwing away the packing slip .
Info should should still be on McMaster site when I originally placed the order.

[USAFANG6799]

Here is what I ordered:96445K215
What I received is P/N 170015PK12

My fault for not double checking what I ordered and what I received.
After I read what Robert and maybe others got I just put them away.

Packs of 12
Delivers Wednesday
$2.81 per pack of 12
96445K215
2 packs ordered on May 31 0531MMATHERNE.
Spring Type   Disc
Disc Spring Type   Belleville
System of Measurement    Metric
For Shaft Diameter   5 mm
ID   5.2 mm
OD   10 mm
Thickness   0.5 mm
Height   0.75 mm
Deflection @ Working Load   0.187 mm
Working Load   73 lbs.
Flat Load   93 lbs.
Material   Chrome-Vanadium Steel
Specifications Met   DIN 2093
RoHS   RoHS 3 (2015/863/EU) compliant

[RDB]

What exactly were doing for you when you tried them Matt? They are a  taller washer. So, you have to start out around a half turn different than with the stock washers.

[USAFANG6799]

My fault for not double checking what I ordered and what I received.
After I read what Robert and maybe others got I just put them away.

[USAFANG6799]

https://www.mcmaster.com/96445k215

Unless someone can unscrable my thought processes on this Holiday(brain usually takes these days off)
I think McMaster sent me the wrong ones.

[USAFANG6799]

What exactly were doing for you when you tried them Matt? They are a  taller washer. So, you have to start out around a half turn different than with the stock washers.

To clarify I didn't even bother installing them because from the feedback from Robert were not good.
That's why I said I just put them away.

[RDB]

What exactly were doing for you when you tried them Matt? They are a  taller washer. So, you have to start out around a half turn different than with the stock washers.

To clarify I didn't even bother installing them because from the feedback from Robert were not good.
That's why I said I just put them away.

Give em a shot. For some reason, and i may be way off base.   I think he was working with Duys poppet at the same time. It had a longer stem, which would have shortened his hammer throw. And if the reg was set too high would have been hard to crack the valve open. Acting as if it were unregulated until the pressure dropped enough.

[darkcharisma]

Hey Duy, thank you! I did shoot them but both barrels were drilled and need some cleaning up. Groups were a mess because the burrs in port. Also I fixed the creeping regulator. I believe the gun was acting like an unregulated gun because the regulator adjuster was too far away from the brass Piston to make a seal. I believe the regulator has a maximum PSI of around 3,200 PSI. After 3200 the Belleville washers get compressed to the maximum and no longer seal against the delran stopper. Again this is just my experience. Once I turn the regulator down it he came consistent. Shooting 26 grain slugs at 925fps.

 This is from Stephen on the 100 page thread. i dont keep my regs below 3000psi at the moment because i have yet to test the 1/2-20 20cc plenum Billy sent. i am coming back from a mini vacation. i will test Billys plenum and Stephens suggestion afterwards.

[USAFANG6799]

Rob - Burnt out from taking my Liberty apart to try this and try that.
I have it shooting where I like it with one extra shim added to the three that came with it from factory.
Regulator(OEM) is turned about 1/4 CCW.
It's also not losing air(don't tell anybody....shhhhh..don't want to jinx it)so all I want to do now is shoot it.
Like they say if it ain't broke don't fix it 

I do enjoy reading about what you guys are doing with/to the Liberty and the potentials it has.

PS I'm burnt out from spending too much time with Uncle Sam because of volunteering for when Uncle saying, "we need some volunteers to go over here or over there. By the way take these pills, take these shots and sign this waver because......we'll things are
"fluid" in this area. Not to worry you'll get extra pay for "volunteering" because nobody else wants to go 
All true. Wrote a short story (My Secret War) that I let my family read what "general areas" I went to and events.
Some experiences are viewed with skepticism because it not what most people experience working 8-5. I didn't want to live a mundane life style. I did that why doing some  part time excursions for Uncle Sam. I liked being out there and taking risk 
Paying for it now but I would not change it if I had to do it all over again. 

[cosmic]

This is what I ordered and sent to brother Duy... He tried them and lost velocity..
 Activity

Delivered March 26
UPS 1Z6028360365674050
March 23
Belleville Disc Spring

for 5 mm Shaft Diameter, 5.200 mm ID, 10 mm OD, 0.5 mm Thick
96445K215

[darkcharisma]

Matt, i didnt volunteer for Uncle Sam but i wish that i did. theres nothing wrong with being a patriot.

Ray, at that time we were pursuing power, anything makes it less gets tossed aside. doesn't mean it wont work if we play with it a little.

the plan with the Liberty will be to test with big plenum and play with efficiency at 3000psi. hopefully still get 55fpe and alot of shots. then moving onto bottling the Freedom. its a good candidate!

[Madd Hatter]

Hey Duy, thank you! I did shoot them but both barrels were drilled and need some cleaning up. Groups were a mess because the burrs in port. Also I fixed the creeping regulator. I believe the gun was acting like an unregulated gun because the regulator adjuster was too far away from the brass Piston to make a seal. I believe the regulator has a maximum PSI of around 3,200 PSI. After 3200 the Belleville washers get compressed to the maximum and no longer seal against the delran stopper. Again this is just my experience. Once I turn the regulator down it he came consistent. Shooting 26 grain slugs at 925fps.

 This is from Stephen on the 100 page thread. i dont keep my regs below 3000psi at the moment because i have yet to test the 1/2-20 20cc plenum Billy sent. i am coming back from a mini vacation. i will test Billys plenum and Stephens suggestion afterwards.

Vacation again! !!

[Madd Hatter]

What exactly were doing for you when you tried them Matt? They are a  taller washer. So, you have to start out around a half turn different than with the stock washers.

To clarify I didn't even bother installing them because from the feedback from Robert were not good.
That's why I said I just put them away.

Give em a shot. For some reason, and i may be way off base.   I think he was working with Duys poppet at the same time. It had a longer stem, which would have shortened his hammer throw. And if the reg was set too high would have been hard to crack the valve open. Acting as if it were unregulated until the pressure dropped enough.

That's exactly what it ended up doing.