Author Topic: Chip of the day. (Read 10554 times - 2 votes)
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Gippeto · « **Reply #140 on:** March 12, 2021, 11:20:31 AM »

13xx. As I understand things...fellow bought a bulk co2 pistol that someone built to use CP2 reservoirs but the seller kept the reservoirs as they are hard to find. Existing adapter was modified to increase thread engagement...original is for co2 pressures and it will now function at pcp pressures.

Al

Rob M · « **Reply #141 on:** March 12, 2021, 11:23:14 AM »

awesome..and yes i should have caught the fact the little screw hole is on the front end of the 13xx , but on the back end of the 22xx valve

Gippeto · « **Reply #142 on:** March 18, 2021, 12:05:47 AM »

4130 tubes. 13xx, custom 140 and proofing/hydrotesting a couple.

Rob M · « **Reply #143 on:** March 18, 2021, 12:26:47 AM »

nice , whats the build ?? what are you using to get to 5000 psi?? hydraulics, a booster , both ?

Gippeto · « **Reply #144 on:** March 18, 2021, 01:00:21 AM »

The 13xx tube is for myself...collecting/making parts to re-do the 2289. The 140 and pcp tubes are for another fellow.

Nothing fancy on the pressure end, it's a 10ton hydraulic porta power pump. Maxes out @8000psi.

Rob M · « **Reply #145 on:** March 18, 2021, 11:37:36 AM »

nice..

MJP · « **Reply #146 on:** March 18, 2021, 01:33:12 PM »

Nice Al,
How much did the length of the tube change on full pressure?
They stretch quite alot and still return to original length.
I usually chuck the tube on one end plug and put a dial indicator to the other end.

Marko

Rick67 · « **Reply #147 on:** March 18, 2021, 02:22:36 PM »

Mr. Al, how is the 13xx barrel band faring?

Waiting for an extra one

Oh, the 3 AR offset adapters are now in BC, Canada for international shipping.

I hope USA Customs don’t fondle them too long

Gippeto · « **Reply #148 on:** March 18, 2021, 04:56:18 PM »

Hi Marco,

Would be interesting to try that if only just for kicks, but will need a different setup. Did you make up some hard piping or just run a hose through the spindle?

Rick,

It's in the works, but will be a little while yet.

You'll get them soon I hope.

Al

MJP · « **Reply #149 on:** March 19, 2021, 05:09:36 AM »

Just chucked the tube on my rotary axis on the mill from the valve block. I use 1200bar rated hose for the connection.
Its interesting to se how far you can stretch the tube before permanent deformation starts.
My pump goes to 850bar and it was not enough to have permanent deformation on the tubes I tested.

Marko

Rick67 · « **Reply #150 on:** March 19, 2021, 02:24:57 PM »

Quote from: Gippeto on March 18, 2021, 04:56:18 PM

Hi Marco,

Would be interesting to try that if only just for kicks, but will need a different setup. Did you make up some hard piping or just run a hose through the spindle?

Rick,

It's in the works, but will be a little while yet.

You'll get them soon I hope.

Al

Make haste, Mr. Al!

Just kidding

Rick67 · « **Reply #151 on:** March 22, 2021, 08:57:03 PM »

My package from Canada is here.

It arrived so fast!

Excellent packaging by Mr. Al, as usual:

It felt like I was unpacking plutonium, so I had to turn on some super suspenseful music

All three adapters are sealed hermitically, ha!

Gippeto · « **Reply #152 on:** March 22, 2021, 10:32:33 PM »

Always good to hear things arrive intact.

The parts are oiled and sealed in the event the package gets wet in transit...can't have things showing up rusty.

Thank you Rick.

Al

Rick67 · « **Reply #153 on:** March 22, 2021, 10:56:10 PM »

Yes, lubed and ready, Mr. Al

Another fabulous machining, sir!

Gracias

Rick67 · « **Reply #154 on:** March 24, 2021, 11:10:56 AM »

Gents, if you ever get one of Mr. Al's AR adapters don't sand the portion that goes into the tube.

Mine have all been a very tight fit, but I have noticed that Crosman/Benjamin tubes differ in their internal diameters by a few thousandths of an inch, so I just hone them with sandpaper in lieu of doing the AR adapters.

The offset 13xx AR adapter, because of the smaller 13xx diameter tube, positions itself closer to the metacarpal section of my thumb, but it does not hit it when I grip the AG.

I actually prefer it because of its shorter size (about an inch shorter) because I use fixed-type Aero Precision (they exude quality with a gloss anodizing) 10" AR A2 buffer tubes.

The LOP is perfect now unlike before when I was still using my longish 13xx RAI AR adapter.

The RAI AR adapter works well with retractable AR15 buffer tubes though

Gippeto · « **Reply #155 on:** March 24, 2021, 12:01:50 PM »

Thank you for bringing this to my attention Rick. All feedback is good.

Was it much sanding to get the fit you wanted? I do shoot for a snug fit, but maybe too much of a good thing is no longer good.

In your opinion, could I stand to loosen the fit by a couple thousandths and still have them acceptably snug in Crosmans looser tubes?

Thank you,
Al

Rick67 · « **Reply #156 on:** March 24, 2021, 12:30:24 PM »

Quote from: Gippeto on March 24, 2021, 12:01:50 PM

Thank you for bringing this to my attention Rick. All feedback is good.

Was it much sanding to get the fit you wanted? I do shoot for a snug fit, but maybe too much of a good thing is no longer good.

In your opinion, could I stand to loosen the fit by a couple thousandths and still have them acceptably snug in Crosmans looser tubes?

Thank you,
Al

Mr. Al, just leave the tolerance as is---for me, they are perfect, sir!

I have one tube (2400KT) that is just snug and I did not even to have to sand it.

I did not do judicious sanding on my tubes, btw, except for my stainless Don Cothran ones

Yes, it is best that I emphasize my use of stainless Don Cothran tubes, as they are a smidgen more close tolerance than the Crosman/Benjamin ones!

The 13xx AR adapter was very tight but I did not sand the tube--made several rotations and it is perfect now, ha!

I like the clicking sound when I mate the 2 parts together

Now, who wants to buy my RAI 13xx AR adapter?

Lol!

Gippeto · « **Reply #157 on:** March 24, 2021, 12:46:27 PM »

Quote from: Rick67 on March 24, 2021, 12:30:24 PM

I like the clicking sound when I mate the 2 parts together

So long as it's not being much of a nuisance, I'll leave well enough alone. Thanks.

I call that sound a "snick"...love it when machined parts "snick" together.

Al

Rick67 · « **Reply #158 on:** March 24, 2021, 12:49:01 PM »

Quote from: Gippeto on March 24, 2021, 12:46:27 PM

Quote from: Rick67 on March 24, 2021, 12:30:24 PM

I like the clicking sound when I mate the 2 parts together

So long as it's not being much of a nuisance, I'll leave well enough alone. Thanks.

I call that sound a "snick"...love it when machined parts "snick" together.

Al

Exactly, Senor Al

I keep sneaking inside my play room to take a look at my installed adapters from you, lol!

They look so nice and sexy, yo!

Killercrow · « **Reply #159 on:** March 24, 2021, 11:50:28 PM »

Here's the short cylinder mounted up to my 1322 PCP target pistol. Beauty fit and holy man is it heavy now

Al does nice work. Very skilled and thorough. Didn't even ask for a hydrotest but he did it anyway.
Thanks again Al.

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Chip of the day.

Author Topic: Chip of the day. (Read 10554 times - 2 votes) )

Author Topic: Chip of the day. (Read 10554 times - 2 votes)
)