Crosman HPA 2240

A detailed look at my 2240 Crosman

[@BackyardDispatcher]

I like it :)

[@BriceP.O.I.]

Thanks BYD!

[@SpencerGaming7580]

Very cool built. I have 30 inch Barrel, steel breech, Froggy Safe Pack, tapped Boss Valve, 4mm transfer port, 4mm barrel hole diameter, very hard cocking spring i cock it with a pin that is screwed in the hammer and goes through my power adjustment screw, a 1.5mm teflon sealing for the valve pin, 4500 psi 0.3l tank at 2650-2700 psi, H&N heavy slug .217 40grain and it shoots 248 m/s stable 77joule

[@BriceP.O.I.]

Wow, what you're describing is nary an air gun, but a monster! I have also used a straight pull cocking rod method on my 362, through the rear cap. It would be nice to see that one sometime. Thanks for the good word Spence.

[@SpencerGaming7580]

Have you got an e-mail Adress, i can provide you some pictures and a Video If you interested

[@SpencerGaming7580]

Can i contact you somehow, then i can Show you :)

[@SpencerGaming7580]

@@BriceP.O.I. Yes it was a long way to that, but honestly i have hoped for even more power, but cocking is on a level of strength that i can barely do with two fingers and also the safepac and the brass valve are under overpressure, safepac is rated for 2400psi. I don´t know what kind of valve stem/pin you have but i can recommend trobb from uk, he has a detachable valve stem where you can unscrew the sealing part and change the seals, but then you buy 1.5mm teflon sheet from chinese wareh. and stamp out custom sealings 8mm OD and 3.5mm ID and use this as sealings with a little bit silicone grease and you will have extreme sturdy seal that withstands this extreme high pressure much longer. Also use the safe pack instead of the drop down asa as it gives you much more volume. I experimented with weaker valve springs also but makes no difference at this power levels.

[@BriceP.O.I.]

@@SpencerGaming7580 I try to keep my builds within certain limits, keep the original concepts. I use Disco poppets, Drilled out transfer ports, light valve springs, hammer springs no greater than .042", etc. Maybe someday I'll go for max power by any means. I have a few more to build before I can start that project.

[@KINGBREAKBARREL]

That's a nice one a friend of mine just build me the same one.. you need to be a little careful with that buck rail barrel band because they crack easily I have one on minds...

[@BriceP.O.I.]

I'm glad you like it KBB. I got ya, I'm not thrilled with the Dr murfee mount, I would like to find a 50mm bottle band for this and future builds but it's extremely difficult when sellers don't include the band size in the description. Thanks again!

[@josephsaucedo8691]

that drop block is restrictive the way it made there only a small plenum space a discovery valve cap and a magnum air power drop block. the way to go you wont have to go so high on the output psi to make power. or take that drop block and open it up if possible the one i got there was no room and it wouldn't let hardly any air through it. big difference after i swapped to the other set up. just a fyi. nice builds

[@BriceP.O.I.]

Thanks JS, glad you like them. I appreciate the info on the plenum issue. These drop blocks have the same amount of air as the stock valve cap. (not enough) I did notice there was an opportunity there to remove a substantial amount of material. Next time I have one of these open I'll address this then do the comparative tests.

[@josephsaucedo8691]

sounds like a good idea the only resign i brought it up is because i bought the same part from the same person. when i took mine apart because of lack of air at a higher psi out put. i realized the way it was design there wasn't enough room to correct the problem on my drop block. i try to explain it to the seller and he acted like it was the way i installed the part. witch wasnt the case the problem were he made the holes and how small they all are the valve holds more are then the plenum it should be the other way around. he told me to send it back but i wasnt going to pay for shipping. if your able to open up i would but take it apart to see if its possible first its also not made from 7570 aluminum so dont open it to much the grade of aluminum he used is not as strong. wich sucks to. just a fyi @@BriceP.O.I.