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Author Topic: 2240 on the way.....  (Read 9137 times))

jeeperatt1

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2240 on the way.....
« on: July 11, 2011, 06:09:23 PM »
Grabbed a 2240 today for $53!  I'm gonna mod it up of course and was wondering if the .22 hammer spring will fit this gun?

I have two hammer springs on the way.  I'm using one for my Disco.

Thanks!

Offline rsterne

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Re: 2240 on the way.....
« Reply #1 on: July 11, 2011, 06:40:56 PM »
not sure what you mean by a ".22 hammer spring".... There are several Crosman springs, all interchangeable for size.... The weakest is the one in the 2240/50/60.... next is the one in the 1377/2289.... and the stiffest is the one in the Discovery (.177 and .22 are the same).... You can get heavier springs, but not from Crosman.... If you are using CO2, there is no reason to go stiffer than stock, especially with the short barrel on a 2240....

Bob
  • Coalmont, BC, Canada
🇺🇦 Dominion Marksman Silver Shield - 5890 x 6000 in 1976, and downhill ever since! 🇺🇦

Airsenal:
1750 CO2 Carbine, .177 Uber-Pumper, .22 Uber-Carbine, .25 Discovery, 2260 PCP 8-shot Carbine, 2260 HPA (37 FPE), 2560 HPA (52 FPE), XS-60c HPA in .30 cal (90 FPE), .22 cal QB79 HPA, Disco Doubles in .22, .25 & .30 cal, "Hayabusa" Custom PCP Project (Mk.I is .22 & .25 cal regulated; Mk.II is .224, .257, 7mm, .308 & .357; Mk.III is .410 shotgun and .458 cal), .257 "Monocoque" Benchrest PCP, .172/6mm Regulated PCP and .224/.257 Unregulated, Three regulated BRods in .25 cal (70 FPE), .30 cal (100 FPE) & .35 cal (145 FPE), .257 Condor (180 FPE).

jeeperatt1

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Re: 2240 on the way.....
« Reply #2 on: July 11, 2011, 06:58:06 PM »
Bob, thanks to your terrific suggestion I have two .40 wire hammer springs on the way from Michael (DerekVinyard)
off the Canadian Airgun Forum; I'm gonna put one in my Disco.

The heavier spring suggestion was terrific for more power out of my Disco at a low cost.  Was wondering what would pull more power out of the 2240?

Thanks!



 

Offline rsterne

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Re: 2240 on the way.....
« Reply #3 on: July 11, 2011, 07:12:04 PM »
Quote
Was wondering what would pull more power out of the 2240?
A longer barrel.... Anything else just wastes even MORE CO2 than the gun wastes already....

Bob
  • Coalmont, BC, Canada
🇺🇦 Dominion Marksman Silver Shield - 5890 x 6000 in 1976, and downhill ever since! 🇺🇦

Airsenal:
1750 CO2 Carbine, .177 Uber-Pumper, .22 Uber-Carbine, .25 Discovery, 2260 PCP 8-shot Carbine, 2260 HPA (37 FPE), 2560 HPA (52 FPE), XS-60c HPA in .30 cal (90 FPE), .22 cal QB79 HPA, Disco Doubles in .22, .25 & .30 cal, "Hayabusa" Custom PCP Project (Mk.I is .22 & .25 cal regulated; Mk.II is .224, .257, 7mm, .308 & .357; Mk.III is .410 shotgun and .458 cal), .257 "Monocoque" Benchrest PCP, .172/6mm Regulated PCP and .224/.257 Unregulated, Three regulated BRods in .25 cal (70 FPE), .30 cal (100 FPE) & .35 cal (145 FPE), .257 Condor (180 FPE).

Rodents Rapture

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Re: 2240 on the way.....
« Reply #4 on: July 11, 2011, 09:43:02 PM »
Go HPA with a PowerMax-HiPAC. It's the cheapest and safest way to go.

jeeperatt1

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Re: 2240 on the way.....
« Reply #5 on: July 12, 2011, 01:38:15 PM »
I've been over to their website doing some research on this.  Seems really interesting.

Have you looked into this before Bob?

Offline joe k

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Re: 2240 on the way.....
« Reply #6 on: July 12, 2011, 01:44:43 PM »
i am also interested in this too thinking about getting a 2240.
joe 

Rodents Rapture

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Re: 2240 on the way.....
« Reply #7 on: July 12, 2011, 01:45:28 PM »
jeeperatt1, you'd do better to get an "honest" opinion from somebody who actually has and uses a HiPAC. I haven't come across any bad opinions from any of the actual users. It's been around for over a year, not one complaint.

Get an honest opinion is all i'm saying
« Last Edit: July 12, 2011, 02:38:02 PM by Rodents Rapture »

Offline joe k

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Re: 2240 on the way.....
« Reply #8 on: July 12, 2011, 01:46:15 PM »
oh yeah  jeep where did ya get it for 53 bucks ?
joe

Offline rsterne

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Re: 2240 on the way.....
« Reply #9 on: July 12, 2011, 03:35:07 PM »
Quote
Get an honest opinion is all i'm saying

OK, I've tried being nice since this is a new Forum, and staying out of your way and being polite.... but that comment was TOTALLY uncalled for.... You just called me a liar, and I won't put up with it.... It would appear that any opinion other than your own self-serving advertising is "dishonest" or somehow unreliable....

You've already been banned from at least two forums I am aware of because you won't listen to or address the safety concerns that others, including myself have expressed.... Since you decided to "poke the sleeping dog" with a sharp stick, I may as well respond in public.... Here is my concern with this design....

The Hi-Pac seals against the Crosman valve to avoid pressurizing the main tube.... That is an excellent idea that has been used before in bulk-fill applications for CO2.... However, this manufacturer decided that the same procedure was safe for HPA.... When I first saw the design, I did the math, and expressed my concerns and they were simply "blown off".... and eventually became attacks against not only my opinion, but my character as well.... Here is the math....

The seal on the end of a Crosman valve is about 0.25" diameter at the sealing surface.... At 3000 psi, the end force is 147 lbs.... The stock retaining screw is a size 6-40, which has a working sheer strength of 173 lbs.... That leaves a safety margin of only 26 lbs.... If the Hi-Pac is tightened into the tube even in a slightly agressive manner it would be very easy for the end force to exceed 26 lbs because of the tremendous mechanical advantage of the fine threads locating it.... In my opinion, there is insufficient safety margin using the stock mounting screw....

To be fair to the manufacturer, and likely as a result of my concerns, he now shows how to replace that 6-40 screw with an 8-32.... That would significantly increase the safety margin, but on my last visit to his website doing that modification was far from required with HPA.... He may have changed that now, and if so, good on him....

So what happens if the seal fails?.... If it simply develops a slow leak, the HPA will just leak out through the slots and holes in the 22XX tube, no problem.... What happens if the seal blows out suddenly or the screw shears off?.... I feel that then there is a POSSIBILITY of a catastrophic failure.... The valve is nearly 0.75" in diameter, and at 3000 psi, the end force, instead of being 147 lbs. is now 1300 lbs.... That is why the valve in a Disco (which is only designed for a 2000 psi MSWP (maximum safe working pressure) is held in place with THREE 8-32 screws.... Will the suddenly released air at 3000 psi simply vent without a problem?.... Maybe, maybe not?.... Would I like to have it next to my cheek at the time.... Nope....

So, instead of me quietly offering my opinion, only when asked, via PMs.... as a result of you calling me "dishonest" it's now all out in public.... again....

Have a nice day!....

Bob

 
« Last Edit: July 12, 2011, 04:15:20 PM by rsterne »
  • Coalmont, BC, Canada
🇺🇦 Dominion Marksman Silver Shield - 5890 x 6000 in 1976, and downhill ever since! 🇺🇦

Airsenal:
1750 CO2 Carbine, .177 Uber-Pumper, .22 Uber-Carbine, .25 Discovery, 2260 PCP 8-shot Carbine, 2260 HPA (37 FPE), 2560 HPA (52 FPE), XS-60c HPA in .30 cal (90 FPE), .22 cal QB79 HPA, Disco Doubles in .22, .25 & .30 cal, "Hayabusa" Custom PCP Project (Mk.I is .22 & .25 cal regulated; Mk.II is .224, .257, 7mm, .308 & .357; Mk.III is .410 shotgun and .458 cal), .257 "Monocoque" Benchrest PCP, .172/6mm Regulated PCP and .224/.257 Unregulated, Three regulated BRods in .25 cal (70 FPE), .30 cal (100 FPE) & .35 cal (145 FPE), .257 Condor (180 FPE).

jeeperatt1

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Re: 2240 on the way.....
« Reply #10 on: July 13, 2011, 02:47:57 AM »
Joe, I bought the 2240 through Amazon from a seller called "redsgear". 

No telling when I will get it but I'm not in a hurry and it was a great price so I figured why not!

As for the other it does seem there are some passionate opinions about the HiPAC.  It doesn't seem to have had any real issues to date, but I'm a both sides of the aisle kind of guy so I like to hear both sides of a story before I make a judgement. 

I'm all for new products and ingenuity so I'm very intrigued by the HiPac!  It seems to have a good track record so far.  But I also appreciate and trust Bob's opinion.

I like spirited debate and something tells me others will benefit from reading this thread.



Offline joe k

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Re: 2240 on the way.....
« Reply #11 on: July 13, 2011, 03:03:30 AM »
i saw that on reds gear at amozon i will be watching this thread to see what developes.
thanks.
joe

ayerstg

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Re: 2240 on the way.....
« Reply #12 on: July 13, 2011, 09:07:54 AM »
Quote
Here is the math

OK, that's all sensible to me - with obvious ways to address.  Thanks - I've been wondering about the cautions on various forums.

Tom

Jogle

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Re: 2240 on the way.....
« Reply #13 on: July 29, 2011, 05:29:16 PM »
Just ordered from Amazon today 7/29/11. New Crosman 2240 $56.95  total with shipping .

Offline TR

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Re: 2240 on the way.....
« Reply #14 on: October 05, 2012, 04:07:23 PM »

Quote
That is why the valve in a Disco (which is only designed for a 2000 psi MSWP (maximum safe working pressure) is held in place with THREE 8-32 screws.... Will the suddenly released air at 3000 psi simply vent without a problem?.... Maybe, maybe not?.... Would I like to have it next to my cheek at the time.... Nope....


I really enjoy people who actually do the math.  I was looking at a HiPac conversion, but after reading this posting, it is easy to see that the disco conversion for a 2240 is a better path than the hiPac.  The hiPac seems like a good idea, but it seems to lack engineering, testing.

Here is a good thread on the disco conversion for the 2240.  http://www.crosman-air-pistol-owners-forum.com/board/index.php/topic,1236.0.html
« Last Edit: October 05, 2012, 04:19:53 PM by TR »
  • Olympic Peninsula, Washington State
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Offline 1377x

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Re: 2240 on the way.....
« Reply #15 on: October 05, 2012, 06:27:54 PM »
i remember that.all the safety concerns voiced were a direct result of what rsterne tol the op.
there are quite a few of those threads around here.one i have been reading as current as today
short list
1) get up!
2) survive!!
3)go to bed!!!

Offline JBird

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Re: 2240 on the way.....
« Reply #16 on: October 06, 2012, 11:24:32 AM »
I have two Hi-Pacs, one on a 2240 and the other on a 2400KT. Both use the extensions as well.  I also pinned both valves with 2, 8-32 screws as well as the stock screw.  It's not difficult to do and it's relatively inexpensive.  Currently i fill both guns to about 2500 PSI.  Better to be safe.
Hatsan AT44 Tactical .25 TKO LDC
Sumatra carbine .25 Clague LDC
Benjamin 392PA - .22
Ruger Blackhawk .22
Crosman 1377 - .177
Umarex EBOS
Gamo Viper Express
Crosman 2240 11" barrel 19 FPE HPA modded
Crosman 2400KT 18" barrel 23 FPE HPA modded
Crosman 2240 14.5" barrel 21 FPE HPA modded
Crosman 2240 CO2 valve mods

Offline Backyardsniper1

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Re: 2240 on the way.....
« Reply #17 on: October 06, 2012, 03:18:57 PM »
I have two Hi-Pacs, one on a 2240 and the other on a 2400KT. Both use the extensions as well.  I also pinned both valves with 2, 8-32 screws as well as the stock screw.  It's not difficult to do and it's relatively inexpensive.  Currently i fill both guns to about 2500 PSI.  Better to be safe.


Where did you place the second screw?
  • Warren,Ohio
Daystate Wolverine Hi Lite .22
Talon SS .22
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RWS 94 .22(MM)
Crosman 2250B .22(Hipac,Storey ldc)
B26-2 .22(MM)

droid

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Re: 2240 on the way.....
« Reply #18 on: October 06, 2012, 04:29:52 PM »
Steel breech + hollow probe first then stick a Boss valve in, open the transfer port a tad and stick on a 9" plus barrel.

That should be plenty of power. I have chosen 9" barrels on all mine, seems a sweet spot for me.

Gary

Offline JBird

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Re: 2240 on the way.....
« Reply #19 on: October 06, 2012, 06:04:49 PM »
I have two Hi-Pacs, one on a 2240 and the other on a 2400KT. Both use the extensions as well.  I also pinned both valves with 2, 8-32 screws as well as the stock screw.  It's not difficult to do and it's relatively inexpensive.  Currently i fill both guns to about 2500 PSI.  Better to be safe.


Where did you place the second screw?


Actually there are 3 screws. The original on the bottom of the tube and two more, one on each side.  You just drill through the valve on a 90 degree angle from the original screw and tap the holes.  Of course you have to remove the pin from the valve or you'll drill right through it. 

The info can be found easily by Googling it.  That's where i found it. 
Hatsan AT44 Tactical .25 TKO LDC
Sumatra carbine .25 Clague LDC
Benjamin 392PA - .22
Ruger Blackhawk .22
Crosman 1377 - .177
Umarex EBOS
Gamo Viper Express
Crosman 2240 11" barrel 19 FPE HPA modded
Crosman 2400KT 18" barrel 23 FPE HPA modded
Crosman 2240 14.5" barrel 21 FPE HPA modded
Crosman 2240 CO2 valve mods