Skout Skout Epoch Owners question.

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MACTEN

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I know there is an issue with the poly o-rings and keeping air in the rifle for prolonged periods. It's not really an issue taking the extreme accuracy into account. If this wasn't the case it would, in my mind, be more of an issue.
But I was curious if anyone had changed out the o-ring with 90 duro HNBR's to see if that helped?
HNBR 90 duro are pretty close to poly in durability but like to keep their shape better.
I'm not sure I even want to try as I do dump my air after use but it would be nice to keep it charged like every other airgun I've ever owned.
 
I think Skout advise you store the rifle not pressurized.
Still / though i would assume it would keep pressure

Having to dump all your air after a outing, it would also suck for people that do not have a compressor, though there are of course those little damn things, but i will have to admit i cant take those seriously even if they seem to work good for many people.
 
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Peashooter said:
I think Skout advise you store the rifle not pressurized.
Still / though i would assume it would keep pressure

Having to dump all your air after a outing, it would also suck for people that do not have a compressor, though there are of course those little damn things, but i will have to admit i cant take those seriously even if they seem to work good for many people.
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Skout actually advised me to leave air in it unless putting it away for an extended period of time. I assume the air just goes past one or more of the plastic o-rings.
 
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They told me it wouldn’t hurt the gun whatsoever to leave it charged. I have read and noticed myself that it will slowly lose air over time. I heard it was something to do with the way the hpr was designed. It will vent air periodically. Maybe it is the type of orings in it? Just to clarify you don’t have to bleed all the air only the air stored in the gun. What’s in the tank stays. However you end up losing several hundred psi at least every time you bleed and recharge. It is an issue and kind of sucks a bit. I give it no excuses due to accuracy. There are a whole list of guns just as accurate that you don’t have to do that. Epoch is nothing next generation in the accuracy department. Is what it is though.
 
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Motorhead said:
I had addressed this "POLY" o-ring decision very early on with factory @ Feb/Mar 2023 when first acquiring my EPOCH ( Sub 50 Serial # ) and the response from factory was DURABILITY coming from many years of manufacturing Paintball markers.
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I do wonder though if HNBR or even NBR 90 duro's would maybe solve the issue.
 
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MACTEN said:
I do wonder though if HNBR or even NBR 90 duro's would maybe solve the issue.
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Do understand that ALL PCP Air Guns suffer o-ring degradation with pressure & time .... Very common to have those PCP's stored under usable pressure that 5 years w/o a leaking issue or regulator failure is a good run !!
Not really sure there is "Per-Say" an issue with the poly's ... there clearly used for a reason SKOUT felt important. Now if or not there still the "Go-Too" o-ring on the EVO ? I don't know.
 
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Motorhead said:
Do understand that ALL PCP Air Guns suffer o-ring degradation with pressure & time .... Very common to have those PCP's stored under usable pressure that 5 years w/o a leaking issue or regulator failure is a good run !!
Not really sure there is "Per-Say" an issue with the poly's ... there clearly used for a reason SKOUT felt important. Now if or not there still the "Go-Too" o-ring on the EVO ? I don't know.
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I wonder if durability is as much of a concern when being used in the airgun vs paintball applications. I know paintball guns get a lot more use generaly than airguns. I think Viton would be a bad choice but maybe a nitrile 90 duro would be enough to both hold air and take abrasion in dynamic use. 90 nitriles are pretty tough and seem to keep the shape they were made in. I noticed when I got mine that is was slathered with silicone everywhere inside which made me think it was to help aid the poly rings in holding.
 
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MACTEN said:
I wonder if durability is as much of a concern when being used in the airgun vs paintball applications. I know paintball guns get a lot more use generaly than airguns. I think Viton would be a bad choice but maybe a nitrile 90 duro would be enough to both hold air and take abrasion in dynamic use. 90 nitriles are pretty tough and seem to keep the shape they were made in.
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An issue that comes to mind is STICKSION in that some rubber compounds tend to stick to there surfaces sealed against and this gets worse with time as the material extrudes into the o-ring groove ever increasing its contact area and drag against dynamic motion.
Just thoughts .... :unsure:
 
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