Author Topic: XS60C PCP Repeater project (Read 455546 times))

Gertrude · « **Reply #1400 on:** January 26, 2016, 04:45:05 PM »

Funny you say that DEz,
I was just talking this morning to my buddy about needing to s l a u g h t e r the pig we are raising this coming weekend.
Now I'm thinking that pig may need to become bacon and chops TONIGHT !

stalwart · « **Reply #1401 on:** January 26, 2016, 04:47:28 PM »

I'm really sorry, guys... I didn't mean to hurt anyone...

Gertrude · « **Reply #1402 on:** January 26, 2016, 06:31:01 PM »

Quote from: stalwart on January 26, 2016, 04:47:28 PM

I'm really sorry, guys... I didn't mean to hurt anyone...

Is there a resident Emotional Distress Therapist in the house ?

stalwart · « **Reply #1403 on:** January 26, 2016, 10:00:32 PM »

If not, you are looking at private help.... and it's going to cost you dearly.

This kind of thing isn't dealt with quickly.

... so sorry.

Bob K · « **Reply #1404 on:** January 27, 2016, 09:58:49 PM »

Mmmmm,
Bacon,
Meat candy.

stalwart · « **Reply #1405 on:** January 28, 2016, 01:14:54 AM »

"The post office was unable to deliver the UPS SurePost® package as addressed. Please contact the sender for assistance."

stalwart · « **Reply #1406 on:** January 28, 2016, 05:38:18 AM »

Ordered a 6K gauge from ebay. It will be enough to do the remaining FDPCPs (as we know the screws fail at 6K), and enough for a 3:1 booster to run up to 18K.

stalwart · « **Reply #1407 on:** January 29, 2016, 01:35:08 AM »

I just have to say this:

I just finished up my email chores for the day, and it is truly heartwarming to me that so many of you want to help me help the FDPCP owners, who are still in limbo, on this.

I can't think of anything more I could need for this project, but, the offers continue to remind me how unselfish some GTA members are... and that I remain in very good company here.

To the handful of readers who may not know this: GTA RULES! ...and I can prove it.

stalwart · « **Reply #1408 on:** February 02, 2016, 10:41:09 AM »

rsterne · « **Reply #1409 on:** February 02, 2016, 12:49:32 PM »

XS-60c Double !!

Double Dig It, Man!!....

Bob

RHytonen · « **Reply #1410 on:** March 07, 2016, 03:32:13 PM »

Hi Eric - you've got mail.
-Rod

Quote from: stalwart on January 29, 2016, 01:35:08 AM

I just have to say this:

I just finished up my email chores for the day, and it is truly heartwarming to me that so many of you want to help me help the FDPCP owners, who are still in limbo, on this.

I can't think of anything more I could need for this project, but, the offers continue to remind me how unselfish some GTA members are... and that I remain in very good company here.

To the handful of readers who may not know this: GTA RULES! ...and I can prove it.

RMM · « **Reply #1411 on:** March 07, 2016, 09:04:30 PM »

Quote from: stalwart on February 02, 2016, 10:41:09 AM

Eric, that is freakin sweet. You never cease to amaze.

stalwart · « **Reply #1412 on:** March 08, 2016, 04:19:50 PM »

Thanks! If you look at where the lower tube ends, in relationship to the shape of the stocks, you'll see how nicely it will go together. It'll be pretty.

stalwart · « **Reply #1413 on:** March 13, 2016, 03:47:37 PM »

As it is raining today... again... I went ahead and made something to speed things up for the destructive testing: A push button bleeder.

A second valve now fits as a button, and the hole it goes into is threaded so I can put a screw in to yank on to remove the plug after the ring is jammed by pressure.

This weather is being called the "March Miracle" due to the snow pack in the mountains that will supply water here this summer. It's badly needed, but is really messing with me (I get better looking powder coating when humidity is low, and heating the shop enough to chase the humidity out is prohibitively expensive)... and I creak like rusted hinges.

I'm just about ready to do this indoors again... sick of waiting, and the new "juice" will be a lot easier to clean up than Hydraulic Fluid. We'll see...

stalwart · « **Reply #1414 on:** March 14, 2016, 03:08:52 PM »

Well, gents... didn't expect this:

Beat the weather in this morning, and blew up DT2. As you can see, even at minimum engagement (.0095), the threads held. I put the good screws I use in, as I wasn't interested in picking remnants of the stockers out of my probe... and I wanted to see what would fail when they didn't (bent them slightly, though). As it became clear that the tube threads would hold way past the gauge's max, I decided to just pump until she blew... and she did, at (I'm guessing) somewhere around 8-10K? 12? Again, the fill cap nut showed no stress.

Interesting results. It made it clear that I will have to build a much stouter rig to blow up the 3Ks...

The restriction (thanks, Lloyd!) sure cut down on the mess!

Gertrude · « **Reply #1415 on:** March 14, 2016, 03:26:57 PM »

Very Good work there Eric.

This should make for some interesting evaluations, (compared to the original gun) that started this whole testing process.
Hopefully this will help to determine the presumable safety margins of the many many guns out in the public.

stalwart · « **Reply #1416 on:** March 14, 2016, 03:57:36 PM »

I still have 3 left to destroy, but I'm going to have to wait until I have a better set up built, if we want firm numbers.

I'm not in a position to give more than an opinion here, but I'm encouraged by this test, and more than a little curious, now, how the original tube got loose. It sure wasn't a result of over pressurization.

The screws were plowing slots into the receiver.

StevenG · « **Reply #1417 on:** March 14, 2016, 04:44:30 PM »

What do you think would happen if the tube was only in one turn? Could improper assembly cause the type of failure that was reported that started all this?

stalwart · « **Reply #1418 on:** March 14, 2016, 04:56:24 PM »

If the tube was within size specs, it would have shown severe damage to the receiver's first threads... if it could have sealed in the first place.

The more we know, the more it looks like my initial guess was correct.

Guys, PLEASE, don't take this thread engagement as safe... the gun was never jostled at pressure, the movement you see is a result of the hose trying to straighten out under pressure... I wasn't moving it on purpose.

It appears, to me, that the design would have failed to spec, if I hadn't put better screws in. In any case, I highly recommend the stock screws be used, to allow a failure to go as the designer intended.

stalwart · « **Reply #1419 on:** March 14, 2016, 05:29:54 PM »

BTW... I just measured the ID of the receiver threads, at the front half of them, and there is less than .002 difference (if any, I did many measurements, along the dia... got a max of .829).

That tube was going nowhere without some external input.

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XS60C PCP Repeater project

Author Topic: XS60C PCP Repeater project (Read 455546 times))