What in Blazes Were They Thinking???

[Methuselah]

Tore it down last weekend, noticed one of the holes (bigger one ... but just started inspecting rest while waiting for a seal I ordered to arrive).

See that they drilled clean through both the receiver and the ram?  Ideas --- why do you think anyone would do this?

[SteveP-52]

I'm taking it there was no pin in that hole.
If that's a refurb, could it have been done by the prior owner thinking whatever he was thinking?
And if so, doesn't say much for Hatsan when they refurbed it and didn't just scrap the rifle after finding that crater....

[StevenG]

Speed holes. Lighter ram moves faster

[Gut2Fish]

I was under the assumption that port was how the ram is adjusted. I noticed a screw in photos of Vortex models right there with stock off that are not in springer models. I know the vortex air ram is adjustable so...might be where one does it.

[Methuselah]

I was under the assumption that port was how the ram is adjusted. I noticed a screw in photos of Vortex models right there with stock off that are not in springer models. I know the vortex air ram is adjustable so...might be where one does it.

Me too, and that was why when I first took it apart and began looking at it I didn't think further than that.  The hole is the right size and position to reach the fill port - but it does go all the way through the base of the ram and both sides of the receiver tube.

Also noteable, the black anodized surface of the ram is intact within that hole.

Again, I'm clueless as to when or why.  How?  Maybe two operations as you suggest.  Factory exposed the fill port, someone else exploited the hole in the ram and drilled all the way through.  Why why why why?  Argh!

Anyway, I think this drilling is what put the shavings in the gun that damaged the piston seal.  I'm ordering a new brake hone, mine turned up missing - 240 and 400 grit stones.  Some pics:

[Methuselah]

I'm taking it there was no pin in that hole.
If that's a refurb, could it have been done by the prior owner thinking whatever he was thinking?
And if so, doesn't say much for Hatsan when they refurbed it and didn't just scrap the rifle after finding that crater....

Bought it new, Pyramyd Air @ end of January, or first of February.

Still under warranty but the CS guys didn't want to believe me when I told them it went from 28 FPE down to 24 FPE.  They said they didn't trust Chrono Connect, I had to pay for shipping, and they could still end up billing me for repairs.

Answers like that just don't instill confidence in me, so I built a spring compressor.

One hole, not good.  TWO, well, I hope my tuning it isn't a waste of time.  Boggles the mind why anyone would drill clean (well, OK, not so clean) through the receiver of a new gun.  It will take a mind better than mine to figure out why!

[blackfocal]

that larger hole is so the ram can be filled with more air without having to take the whole rifle apart. The only way to fill the ram is by using a PCP filler probe and a hand pump.

[Methuselah]

that larger hole is so the ram can be filled with more air without having to take the whole rifle apart. The only way to fill the ram is by using a PCP filler probe and a hand pump.

Both sides, clean through receiver.  Guess I better shoot a better picture

[blackfocal]

that larger hole is so the ram can be filled with more air without having to take the whole rifle apart. The only way to fill the ram is by using a PCP filler probe and a hand pump.

Both sides, clean through receiver.  Guess I better shoot a better picture

yes..... both sides.... clean though the receiver...... that is normal.

[Methuselah]

that larger hole is so the ram can be filled with more air without having to take the whole rifle apart. The only way to fill the ram is by using a PCP filler probe and a hand pump.

Both sides, clean through receiver.  Guess I better shoot a better picture

yes..... both sides.... clean though the receiver...... that is normal.

Not the three for the pins ... both sides ... right (normal)?

Wish I could post a decent pic, cellphone, e-mail to bogus address, sent folder on a pc gets one pic at a time out of my phone (broke data connection)

[blackfocal]

i knew what you were talking about in the first place, once again that is for filling the vortex piston without taking the whole rifle apart.... that hole is the same size as a PCP probe. I don't know how to make this any more simple for you...

[Methuselah]

i knew what you were talking about in the first place, once again that is for filling the vortex piston without taking the whole rifle apart.... that hole is the same size as a PCP probe. I don't know how to make this any more simple for you...

Truth be told, I was worried it was a case of garbage in - garbage out.  I saw the hole in the receiver, but didn't really note there were two (not the pins, the drilling).  I thought I had explained it was just one hole so that was my error and I wanted to make sure based upon my misinformation I didn't get an answer based upon my explaining it wrong.

Before today I thought that screw came out of the ram and it was the probe and fill port.  Today I looked up the probe and a little light comes on with your assurance --- that hole across the bottom of the ram (which yesterday I thought was drilled there at the same time the holes in the receiver were drilled) is where the ram gets filled, the screw then, I am going to guess, is to depressurize it?

So yeah, you are right it was unclear to me there would need to be two holes to fit that probe in there.  I do think it's a blunder for the factory to fill the ram with the gun assembled by drilling with the ram in there (and I'm not positive they do that), not to mention it weakens the structure of the receiver and maybe promotes vibration or harmonics.  But yeah, you are right, I didn't quite understand the whole picture.

Thank you for sticking to your guns and making me understand    I appreciate it!  Maybe it would have clicked faster if I ever saw a PCP or the fill probe for one ... so if I ever want to change the ram pressure, it's a Hatsan PCP probe?  Cool 

I'm almost ready to start cleaning it up, going to buy some kind of large bucket or plastic bin and either use gasoline, soapy water, or purchase some degreaser for automotive applications.  My replacement hone I ordered (old one is missing...) won't be here until Monday 

Thanks again!