Lets try and set the record straight on the Discovery in this thread. The gun is made in the USA. The pump is made in China - an Xisico BAM pump. Crosman claims they will have rebuild parts available for the pump. That leads me to think the pump can be rebuilt with O-rings that should soon be available. The gun takes 120 or so pumps to go from zero to 2,000 psi. It gets 30+ full power shots which takes it down to 1,000 psi. It takes about 50 pumps to get it back up to 2,000 psi.

Crosman also claims to have stress tested the pump. Yes, it should pump to 3,000 psi without fatigue and it should withstand heat build up as they pumped it continuously for an extended period of time (I don't recall the exact length of time but you could never pump it that long without having a heart attack).

The Discovery should be able to be filled with a scuba tank charged to 3,000 psi. An 88 cf tank would give you 97 or so fills from 1,000 to 2,000 based on the Disco air tube volume of 125cc. At 30+ shots per fill that's a few thousand shots.

For anyone considering a PCP there is no better time. For those that aren't, that is your choice. It is not the end-all of guns, but it does represent a good value for folks who like to shoot and hit what they're aiming at.

"but I'll be needin' that gun, fer squirrels and such."

Nice post Bill. Yea the Disco is a fine little gun. I have yet to venture to the dark side, but, I am a true believer in the "gray side"! My 2260 is a true fun gun & a tack driver for shure. IMO pretty much the same gun in most respects. W/ B&A valve I get 600 fps (14.3 CP)& clover leaf groups to 20+ yrds. Have taken many "Squirrels & such" with it! Nailed a rat with it yesterday & 17 yrds& posted my 1st pic on my own at GTA! Always look forward to your posts Bill. Honesty you can count on from a fellow airgunner. Tim.

Bill, I did retract my high number of pumps per fill statment. And I asked for them to be deleted to not mislead. I took the Air force pump apart.I am not sure but it looks an awful lot (exactly) like the pump they sell for/or with the Discovery. And like you say it is rebuildable.And I say only to a certain point. Yes you can replace 4-5 O rings,a little rubber ball (check valve),and a small spring. But the main guts of the pump are built something like a Atomotive strut,read throw away. But that should not scare "Anyone" from buying the Discovery package. A fella worked at Airforce (a tech) for years and said the only pumps that were ever lunched out were either over heated (more than 5 min continuous) Prob. more than once or abused. He said he has had two of the mentioned pumps for five years and uses them correctly and often and they both still work fine. I am a tinkerer and would rather have the totally rebuildable Hill/ BSA pump. Is it necessary ? Maybe not. Is it more expensive,yes. I just like to be able to fix my world around me and not let it tell me,No you can't. Butcha still gotta love that Disco.LOL

Saw your posts to that effect. Glad you have it figured out. Thanks for the pump info. I don't suspect I'll wear mine out soon. I plan to look for a cheap scuba and I'll just keep the pump for a back up. It's not that I mind pumping so much, but the disco is a fun gun to shoot and I can see myself putting a lot of pellets through it this summer. A tank fill setup would be nice and it should be affordable as you don't require anything much higher than 3000 psi.

"but I'll be needin' that gun, fer squirrels and such."

Yes, I am doing the same (scuba) for the same reason as you. And who knows (yet) To my way of thinking the three stage valve is the device that makes a human capable of pumping 4500 psi.. The first stage is the one that over heating damages. So maybe the only stage on any hand pump that needs a redo is taken care of with the rebuild kit that Crosman will make avialable !

several months ago to spend some time with and then do a review.
Would have saved me some "wear and tear" fighting all the dummies
and nickel slick know betters! LOL

If it would have been a springer and recieving way out reviews/
claims by the same guys (Tom G., Jim C., etc.) more than a few
would have spoke up and I wouldn't be banned from that wonderful
all about the airgun truth forum. LOL

Herb

I was thinking about shopping for a pump since mine might have been faulty. One of my shopping calls was Pyramyd. I asked to speak with there tech dept. to find out some straight dope about PCP pumps since they have been pretty honest with me in the past. They do not know everything but are ready and willing to help and willingness is more than half the battle with companies these days.They connected me with a guy name Borris,he was intersested in the # of pumps himself so he would feel comfortable about his claims when customers would ask him about Disco pump #s.He was nice enough to rally some PA staff members to help him in some fact finding here. They counted how many strokes from EACH of the 4 pumps they market. Borris called me a couple hours later with the results. I'm sorry but I did not have the heart to ask them to do a pump test from 1000 psi to 2000 psi.but a semi educated guess would be 45-65 pumps depending on you and/or pump . So we will have to be happy with what we will know about different pump brands and pump volumes.Here goes, The FX brand wins the #s game pending my own Hill style pump test. FX 110 pumps, Axsor (not to be confused with Xisico) 125, Discovery (Xisico pump per Bill S) 130, And the highest # of pumps goe's to the Airforce @ 140. And as I said I will post the heresay (but is noticably larger) higher volume BSA/Hill pump next week. PS 140 pumps is not as bad as it sounds. But I would rather have 110,Who wouldn't

Pumps are machines that take air at atmospheric pressures and compresses it in several stages whereby the pressure is multiplied.

IF you start from less than 1 BAR, than you have a BIG problem.

México City, for example , lies at 7,300 ft above sea level. At that altitude, there is only 70% of the air molecules present per unit of volume. This means that for EACH stroke you pump 30% less volume, which means that you need 43% more strokes.

It also means that since you get less resistance, you tend to pump much faster and longer. Pumping 150 strokes in a single "go" is not unheard of. And this is what fries the seals, IMHE.

People at different altitudes will report, justifiably so, different stroke counts.



Un Abrazo!




Héctor