A warning to those using hand pumps
Select Gate
READ GTA FORUM RULES BEFORE POSTING
GTA Forum Help Desk
GTA Announcement Gate
Dealer Area
GRIP
AirgunWeb Airgun Videos
Airgun Repository of Knowledge
Vendors and Vendor Videos
AirGun Expo 2021
Airgun Expo 2022
Contests and Giveaways!!!
Welcome New Members
In Memoriam
GTA Contributing Members
Shot Show Videos
Hajimoto Productions
Airgun Detectives
Air Gun Gate
BB Guns and Such
"Bob and Lloyds Workshop"
American/U.S. Air Gun Gates
European/Asian Air Gun Gates
PCP/CO2/HPA Air Gun Gates "The Darkside"
Air Archery
Vintage Air Gun Gate
Air Guns And Related Accessories Review Gates
Hunting Gate
Machine Shop Talk & AG Parts Machining
3D printing and files
Buyer's, Seller's & Trader's Comments
Bargain Gate
Back Room
Target Shooting Discussion Gate
Target Match Rules
Shooting Match Gates
Field Target Gates
The Long Range Club
100 Yard Match
Discussions By States
Welcome,
Guest
. Please
login
or
register
.
Did you miss your
activation email
?
1 Hour
1 Day
1 Week
1 Month
Forever
Login with username, password and session length
Home
About
Help
Old GTA
Gallery
Search
Stats
Login
Register
Advertise Here
GTA
»
All Springer/NP/PCP Air Gun Discussion General
»
PCP/CO2/HPA Air Gun Gates "The Darkside"
»
Support Equipment For PCP/HPA/CO2
»
A warning to those using hand pumps
« previous
next »
Print
Pages:
1
[
2
]
Go Down
Share This!
Author
Topic: A warning to those using hand pumps (Read 1914 times))
AlanMcD
Expert
Posts: 1367
yes
Real Name: Alan
Re: A warning to those using hand pumps
«
Reply #20 on:
March 04, 2019, 01:46:01 PM »
That is one nicely sized desiccant pre-filter! I have no doubt that yours will get the absolute humidity down low enough that you will have dry air in your guns!
How much desiccant does that hold, and how often do you have to recharge it? It looks like it holds a couple of pounds worth . . .
Logged
Michigan
robertr
GTA Senior Contributor
Posts: 2335
Real Name: Robert
Re: A warning to those using hand pumps
«
Reply #21 on:
March 04, 2019, 01:59:25 PM »
I bought a 4.5lb bag, I have a bit over half left so yes around two pounds. It is 1 1/2" id x 27" high. I figured long and narrow would be better than short and wide, more time for the intake air to be in contact with the desiccant. In over a year I have yet to recharge, I am going by the desiccant in the filter on the pump and it has not changed color yet.
Logged
Canada
Josan
Marksman
Posts: 418
yes
Real Name: Jo
Re: A warning to those using hand pumps
«
Reply #22 on:
March 04, 2019, 03:20:08 PM »
A recurring subject. There are a lot of hand pumpers and very few reports of evident moisture damage. There are so many factors of influence. It is obviously safer to fill from a dive bottle, but the independence that a pump gives you is really tempting.
I've been hand pumping a unregulated CZ200S for years with no issues. It has it's sweet spot between 150-100 BAR, so it is easy to pump. My regulated competition rifle, BSA Goldstar SE, i only fill from the bottle, because i shoot it from 230 BAR down to 90. Handpumping to 230 BAR is a pita and heats up your pump really fast.
Logged
The Netherlands
Ribbonstone
GTA Senior Contributor
Posts: 12030
Re: A warning to those using hand pumps
«
Reply #23 on:
March 04, 2019, 06:31:57 PM »
With Nomdic on this one....haven't had any pump related rusting/corrosion issues. Oldest PCP has been inuse from 2003, pump filled from the start, and still bring and clean inside the tube. Others have been in use for a 10 to 8 years and show up clean when opened.
However, I have found:
1. Ruse in the tube of a brand new rifle...which isn't "MY" rust, it's factory rust....but no matter what you used to fill it, the fill device would have gotten the blame.
2. Rust in the non-pressurized parts of the tube (the sections that don't see any air pressure). That would be the front end cap down to the sealing o-ring (which the pressurized air never touches) or the area around the gauge block (for a Crosman type gauge,that part is not prtessurized either).
3.Rust from the valve's outside sealing o-ring back (another place that isn'tpressurized).
NOT calling BS..am sure there are ways to inject waterwhen you don't want to. But consider: this is New Orelans, so it's NEVER dry.
But if it makes you feel better...put on whatever you want to put on...just don't test it if you want to keep your peace of mind about it.
Pumping for long life (both the pump and the rifle):
1. Pump in sets of 50-60 strokes.
2.BLEED the pump line (which blows out the little moisture traps they have in them)c, disconnect, and walk away for a few mintutes to let it cool down.
3. Hook back up and start at #1.
YEp...takes "forever"to fill that way....but I'm not in a rush.
Compressors likely inject much moremoisture becasue they move so much more air per use...we run those things in one shot to fill from empty to full.
Logged
Louisiana
PCPhack
Expert
Posts: 1628
yes
Real Name: David
Re: A warning to those using hand pumps
«
Reply #24 on:
March 04, 2019, 06:42:52 PM »
At least for my compressor, I have a large molecular sieve tower in addition to the separator, so I seriously doubt it. However, I take it you mean those who might try a compressor without those.
Logged
Texas, USA
Print
Pages:
1
[
2
]
Go Up
« previous
next »
GTA
»
All Springer/NP/PCP Air Gun Discussion General
»
PCP/CO2/HPA Air Gun Gates "The Darkside"
»
Support Equipment For PCP/HPA/CO2
»
A warning to those using hand pumps