I have an IZZY. I have had it for 10 year but not shot much with it. I have kept it lubed (Gamo lube) and have just started back in it.
I just found out that it is not holding a full charge. After charging, loading then answering a phone call. The call was maybe 40 seconds so perhaps 1:15sec passed when I took the shot. A very low 5 at 5 o'clock and sure did sound strange.
After that shot I charged, loaded and waited 5 minutes. When I pulled the trigger I got nothing. Just a click of the trigger. I never noticed a change in shot raport before as I normally shoot within 15 seconds of charging.
Is it normal of an SSP to lose some of its charge over time or is my piston seal shot?
Loss of Air Pressure
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kevinweiho
- Posts: 949
- Joined: Wed Oct 14, 2009 12:44 pm
- Location: Costa Rica, Central America
quote="kevinweiho"]Xman:
If you used the Gamo lube for the compresion chamber seal than that was
a big error... This lubricant was designed to be used only for exterior metal surfaces.
You should have used crosman Pellgun oil instead.
Kevho.
Aigun aficionado from Costa Rica, C.A.[/quote]
That is odd. I have posted her before asking about Gamo oil and nothing negative was said about it. On inspection of the old seal there is NO visable damage to it, It is just compressed a hand full of thousandths more than a fresh seal. Like I said it is over 10 years old.
Just a note: the IZYY is a whole lot earier to take apart than put together! Even following and reversing the still pic demo posted on another web site. Still struggling with the lever configuring and getting the piston right and getting the pins to line up.
If you used the Gamo lube for the compresion chamber seal than that was
a big error... This lubricant was designed to be used only for exterior metal surfaces.
You should have used crosman Pellgun oil instead.
Kevho.
Aigun aficionado from Costa Rica, C.A.[/quote]
That is odd. I have posted her before asking about Gamo oil and nothing negative was said about it. On inspection of the old seal there is NO visable damage to it, It is just compressed a hand full of thousandths more than a fresh seal. Like I said it is over 10 years old.
Just a note: the IZYY is a whole lot earier to take apart than put together! Even following and reversing the still pic demo posted on another web site. Still struggling with the lever configuring and getting the piston right and getting the pins to line up.
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Lilly
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Lilly
Ok, I'm confused by the Crossman Pellgun oil.
The Amazon.com description for this has the following warning:
"Do NOT use in precharged pneumatic (PCP) airguns! Pellgunoil is NOT safe for use in guns that use high-pressure air! Using Pellgunoil in a PCP could be explosive and may result in serious injury or death. For CO2 & multi-pump pneumatic guns Put a drop on the tip of every third 12-gram or 88-gram CO2 cartridge before inserting it Frequently apply a drop of Pellgunoil to the pump head of a multi-pump pneumatic gun Seals the gun."
How does the pressure experienced by the oil in a PCP gun differ from that experienced by a multipump pneumatic design? Is it because the PCP gun could potentially be metering 200/300 Bar air down to what it uses for each shot, whilst the pneumatic never gets up to that pressure in the first place?
The Amazon.com description for this has the following warning:
"Do NOT use in precharged pneumatic (PCP) airguns! Pellgunoil is NOT safe for use in guns that use high-pressure air! Using Pellgunoil in a PCP could be explosive and may result in serious injury or death. For CO2 & multi-pump pneumatic guns Put a drop on the tip of every third 12-gram or 88-gram CO2 cartridge before inserting it Frequently apply a drop of Pellgunoil to the pump head of a multi-pump pneumatic gun Seals the gun."
How does the pressure experienced by the oil in a PCP gun differ from that experienced by a multipump pneumatic design? Is it because the PCP gun could potentially be metering 200/300 Bar air down to what it uses for each shot, whilst the pneumatic never gets up to that pressure in the first place?
loss of air pressure
Howdy, I also own an Izzy, and shoot around 1500 pellets/month with it. If I fail to lightly lube the gun's oil seals every tin of pellets, it will let me know by shooting a lightly charged pellet. What happens; just after I load the pellet, occasionally I can hear some of the charged air escaping when I close the breech on the loaded gun, but yet sometimes I do not hear this air escaping. Instead of a "THUWACK" of the pellet hitting the target, I get a tick instead, and it is generally a low shot, as much as 2-3 rings low. When you say you oiled the gun, where did you oil it? You also state you changed the seal, which seal? Most if not all problems of oiling that I have found are from not oiling the valving components. The manual offers some instruction on oiling, but not enough. On the top of the pressure tube is a small hole , visible in the owners manual parts chart, (http://www.bghi.us/manuals/izh46_46m_manual.pdf) cock the gun and remove the slide bar (part#7) to access this hole. a drop is all it needs here. Oiling this hole will lubricate some of the valving and valving seals as the charged air goes past them when the gun is fired. While the weapon is cocked, put a drop of oil on the seal exposed on the piston. This lubricates the piston seal and the cylinder a bit more. Open the breech, put a drop of oil in the hole exposed there, and also on the bushing, valve, and valve plunger (round cylinder/s seen just behind the breech block) just to the rear of this hole. Most of the cocking lever pins will not need oil for several months if they are seen to have oil on them. Then shoot several felt pellets to clear the barrel of oil, or, run a brass or plastic cleaning rod with patch through the barrel to clear the barrel of oil. As to type of oil, this is a Ford/Toyota/republican/democrat type of decision, and I ain't getting that mud on me publicly. PM me for my opinion/recommendation.
Generally, there's concern that petroleum based oils will eat the seals.
Dieselling is mainly a concern with springers due to the high temperatures generated during compression. Thus, no petroleum oils in the compression chamber.
Adding combustible hydrocarbons to a 3000 psi system sounds dangerous on its face. That's why silicon grease is used for SCUBA seals and on PCP seals.
SSPs and CO2 benefit from Crosman Pellgunoil since it's formulated for just this use. Sure looks like Automatic Transmission Fluid to me. ATF is what I use when reassembling CO2 guns..
Dieselling is mainly a concern with springers due to the high temperatures generated during compression. Thus, no petroleum oils in the compression chamber.
Adding combustible hydrocarbons to a 3000 psi system sounds dangerous on its face. That's why silicon grease is used for SCUBA seals and on PCP seals.
SSPs and CO2 benefit from Crosman Pellgunoil since it's formulated for just this use. Sure looks like Automatic Transmission Fluid to me. ATF is what I use when reassembling CO2 guns..