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PostPosted: Thu Jan 02, 2014 2:32 pm 
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Location: Kelowna, BC
Since getting my PAL and rPAL, I've taken it upon myself to finally restore the 2100 from my youth. Several years ago it stopped holding air and you could hear a very audible "hiss" as it was pumped.
So...
...a couple of weeks ago I bought the 2100 repair kit from Eric @ ScopesAndAmmo and pulled my old plinker apart...to find this:

Attachment:
Crosman2100Repair Valve 01.jpg
Crosman2100Repair Valve 01.jpg [ 135.63 KiB | Viewed 1230 times ]


The valve has this bizarre lookin' reservoir thing on it. No idea what it does or why it's there, and I can't find a parts diagram that lists it anywhere. Where the two join together is where the valve is leaking (you can see a rectangular shaped hole that opens up when the valve is dumped)...

Attachment:
Crosman2100Repair Valve 05.jpg
Crosman2100Repair Valve 05.jpg [ 198.33 KiB | Viewed 1230 times ]


To make matters worse, the replacement valve I received is significantly shorter than the original so when I pump it up, the pump cup isn't compressing fully against the valve. Is my 2100 one of those rare early versions of the detuned model?

Below are the rest of the pics of my little dilemma. So I put forth to you, the members of the fantastic forum...what can I do to get my childhood AG back into working condition? Would I be able to get a longer piston so that it could fully seat the pump cup onto the valve during compression with the newer, shorter valve?

Attachment:
Crosman2100Repair 01.jpg
Crosman2100Repair 01.jpg [ 214.79 KiB | Viewed 1230 times ]

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Crosman 2100 (from my childhood in the 80's...in the process of fixing her up)
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PostPosted: Thu Jan 02, 2014 2:34 pm 
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Location: Kelowna, BC
Additional pics...

Attachment:
Crosman2100Repair Serial.jpg
Crosman2100Repair Serial.jpg [ 217.34 KiB | Viewed 1228 times ]


Attachment:
Crosman2100Repair Valve 02.jpg
Crosman2100Repair Valve 02.jpg [ 236.76 KiB | Viewed 1228 times ]


Attachment:
Crosman2100Repair Valve 04.jpg
Crosman2100Repair Valve 04.jpg [ 250.46 KiB | Viewed 1228 times ]

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Crosman 2100 (from my childhood in the 80's...in the process of fixing her up)
Crosman 2200 Magnum || Crosman 1377 || Crosman 357 || Umarex XBG


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PostPosted: Thu Jan 02, 2014 2:39 pm 
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Location: Quebec, Canada
EricTheRed wrote:
Additional pics...

Attachment:
Crosman2100Repair Serial.jpg


Attachment:
Crosman2100Repair Valve 02.jpg


Attachment:
Crosman2100Repair Valve 04.jpg


That thing is the water reservoir in case your gun is missing any, its also called the water retainer exhaust valve body increasing for the tuning option available upon impact of the rust improvement fitting.

Don't ask where i got the info :rolleyes: :roll: :axe:


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PostPosted: Thu Jan 02, 2014 3:19 pm 
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Location: SW, Ont
I was searching for a friend for info on a Crosman 2200 and came across this. It looks like the same model as yours. Pictures are at bottom of page. It has a reservoir. They say it might be a detuned Cnd. version.

http://www.gatewaytoairguns.org/GTA/ind ... ic=23740.0


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PostPosted: Thu Jan 02, 2014 3:21 pm 
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Location: SW, Ont
One more link

http://www.network54.com/Forum/170154/t ... sman+2200B


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PostPosted: Thu Jan 02, 2014 4:02 pm 
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It's a vent- and if it leaks, the rifle can barely get to 400fps.

I didn't realize you had the older configuration valve. You can use the seals/valvestem from the new valve in the old valve- except for one o-ring found in the older valve (#2200A035). You will also need an o-ring for the vent- a .22 bolt o-ring is the same size. If you're stuck as a result of this, send me an email

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PostPosted: Thu Jan 02, 2014 4:16 pm 
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I have yet to see a valve like that :? i have the brass valve in my 2100 and 2200 but it looks like your aluminum replacement one, definitely some sort of a vent.

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PostPosted: Thu Jan 02, 2014 4:20 pm 
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Depends on when the rifle was built- Crosman did alot of that brass/aluminum interchange- but on most other products the valves were not physically different sizes.

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PostPosted: Thu Jan 02, 2014 4:29 pm 
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AirGunEric wrote:
physically different sizes.

yes thats odd you'd think they would at least be the same length. :?

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PostPosted: Thu Jan 02, 2014 4:47 pm 
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Fascinating! A pressure release valve, from when they detuned Canadian guns a half decent way (I can't believe the stuff they're doing these days). I'd love to see inside the valves if you feel like opening them up. I can't quite imagine how they work. The 'wassat' photo makes it look like the pressure sensing port is inside the main valve, but then you wouldn't need anything as bulky as the outside bit, and I don't know how you'd combine that with the normal valve function. The alternative is that the external bit contains a sprung relief valve that is open to the high pressure in the valve, but then what's that apparent sliding port in the 'wassat' photo?


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PostPosted: Thu Jan 02, 2014 5:00 pm 
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Interesting, I didn't know they made these in Toronto before. The extra valve component must be a weird (and more expensive) way of detuning. This seems much more difficult to retune. With the common bleedhole, you can just plug it.

Here's a picture of how I think the weird detuning system works. When the pressure in the main valve builds up above a certain point, it escapes into the other chamber and out the exhaust valve. This is just my guess. Does anyone know how it really functions?

Edit: I just realized the transfer port between the 2 valve components is on the top middle section of the smaller chamber, not on the side as I sketched it.


Attachments:
IMG_20140102_165218.jpg
IMG_20140102_165218.jpg [ 65.67 KiB | Viewed 1151 times ]

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Last edited by TriggerHappy416 on Thu Jan 02, 2014 5:15 pm, edited 1 time in total.
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PostPosted: Thu Jan 02, 2014 5:09 pm 
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Ive googled the poop out of crosman 2100 valves and still cant find one like the OP's. :?
I noticed his has a sticker that says Toronto Ont on it. :?

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Last edited by Ace on Thu Jan 02, 2014 5:19 pm, edited 1 time in total.

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PostPosted: Thu Jan 02, 2014 5:13 pm 
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Ace wrote:
Ive googled the poop out of crosman 2100 valves and still cant find one like the OP's. :?
I noticed his has a sticker that says Totonto Ont on it, must be a newer style with a deferent detuning technique of detuning not an older one with the simple little bleed hole in it. :?


I think it's definitely an old design. It would be too expensive to do this kind of detuning today, bleedhole is the way to go.

Another member posted the link to a 2200 with the same type of valve. 2200s are not made anymore so that's an indicator of how old this detuning method is. The newer 2100s are definitely not made in Toronto. I think there used to be a Crosman manufacturing centre on Kipling Ave. Also, the OP said the gun was from years back.

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PostPosted: Thu Jan 02, 2014 5:20 pm 
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There was a Crosman facility in Dunnville until about 25 years ago- don't know how they defined which guns got built there- but quite a few Mk I/II's came out of it in the early 80's.

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PostPosted: Thu Jan 02, 2014 5:21 pm 
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yes your correct i didn't notice the link thanks TH. :wink:
so its a pressure relief valve interesting 8)

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