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Simple auto cocker mechanism...Crosman 600

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Simple auto cocker mechanism...Crosman 600

Unread postAuthor: Gippeto » Sat Nov 19, 2011 4:25 pm

Came across this in my perusing today, and remembered having a discussion with someone here about something similar.

The Crosman NS1200 (Nightstalker) works exactly the same way.

Since a picture is worth SOooooo much...
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Unread postAuthor: mark.f » Sat Nov 19, 2011 4:53 pm

I see everything except a way to release residual pressure in the hammer? Unless I'm missing something.

Should be easy to add an exhaust port to do such a thing, though, with your facilities. :D

Good find.
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Unread postAuthor: Crna Legija » Sat Nov 19, 2011 6:39 pm

mark.f wrote:I see everything except a way to release residual pressure in the hammer? Unless I'm missing something.

Should be easy to add an exhaust port to do such a thing, though, with your facilities. :D

Good find.


id say it just go back down the same port
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Unread postAuthor: Brian the brain » Sun Nov 20, 2011 5:41 am

Seems like they left out some things...


like...how does pressure travel from the chamber to the exhaustport when the valvestem has the same diameter as the channel it slides in?

What holds the hammer in cocked position?
Not that hard to figure out but still...the drawing is not the complete picture.... :wink:
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Oh my friggin god stop being so awesome, that thing is pure kick ass. Most innovative and creative pneumatic that the files have ever come by!

Can't ask for a better compliment!!
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Unread postAuthor: mobile chernobyl » Sun Nov 20, 2011 7:58 am

BTB's got it,

Also this design is probably way over simplified for a user manual or something, but there is nothing holding the valve body in place either (unless there's a hollow set screw that goes through the breach transfer port). The spring for the hammer is all well and good, until you need to reset it and then the pressure on the chamber side would far exceed atmospheric lol.

There were a few CO2 powerlet designs in BB guns' and paintballs' history, the one you have posted is a good example, the PGP from paintball is a more famous example:
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Unread postAuthor: Gippeto » Sun Nov 20, 2011 3:37 pm

Brian the brain wrote:Seems like they left out some things...


like...how does pressure travel from the chamber to the exhaust port when the valve stem has the same diameter as the channel it slides in?

Have a look a little lower...there's a passage there. I hadn't noticed earlier that they had it going all the way to the valve stem seal, in the nightstalker, this passage goes to the transfer port.


What holds the hammer in cocked position?
Not that hard to figure out but still...the drawing is not the complete picture.... :wink:


Correct...it's not a patent drawing nor is it a set of construction drawings. It's merely a concept that can be utilized...but you know that already. :wink:

Of course...if someone can't figure out a sear arrangement and where to put a screw or two...that person might be better served with a safer hobby...say stamp collecting. :lol:
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Unread postAuthor: jackssmirkingrevenge » Sun Nov 20, 2011 3:38 pm

Gippeto wrote:...say stamp collecting. :lol:


nope.

papercuts.
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Unread postAuthor: Gippeto » Sun Nov 20, 2011 3:42 pm

jackssmirkingrevenge wrote:
nope.

papercuts.


:lol:
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Unread postAuthor: jackssmirkingrevenge » Sun Nov 20, 2011 4:24 pm

Yeah, they're serrated and everything!

;)
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Unread postAuthor: Hawkeye » Sun Nov 20, 2011 6:01 pm

Why is the powerlet in backwards?
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Unread postAuthor: jackssmirkingrevenge » Mon Nov 21, 2011 12:56 am

Hawkeye wrote:Why is the powerlet in backwards?


Doesn't make a difference since the powerlet housing is pressurised.
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Unread postAuthor: Hawkeye » Mon Nov 21, 2011 7:35 pm

Seems more practical to pierce the powerlet and vent it directly into the valve as I thought they all were done. The valve just looks more equipped to deal with it than the housing.
http://www.bryanandac.com/
and look at 22xxmod
I've also wondered why there hasn't been a set up where two valves and powerelets oppose each other so that the action of one blowback fires the other valve which then returns and repeats the cycle.
Probably best to have two barrels going for that.
That would increase the rof.
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Unread postAuthor: jackssmirkingrevenge » Tue Nov 22, 2011 12:16 am

Hawkeye wrote:I've also wondered why there hasn't been a set up where two valves and powerelets oppose each other so that the action of one blowback fires the other valve which then returns and repeats the cycle.
Probably best to have two barrels going for that.
That would increase the rof.


A pneumatic gast gun?

Hmmm...

Something like Pascal Eggert's fictional Titan C2 design would be awesome :D

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Unread postAuthor: LeMaudit » Tue Nov 22, 2011 6:22 am

ohhhhhhhh..... love this one! :love10:
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