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OKAY…Why does the RTI Prophet Performance Compact have TWO air chambers?

Forums PCP Airguns PCP Airgun – Discussion OKAY…Why does the RTI Prophet Performance Compact have TWO air chambers?

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    Blackpaw
    Participant
    Member
    United States
    Accuracy: +26

    Alright, I asked this in another string, but I am still confused.

    My Prophet Performance Compact (PPC) came yesterday.  There is the fill power for the bottle, and one at the butt end of the buttstock.  

    RTI in the manual calls it the "Rear Air Chamber" 200 bar fill pressure, but no pressure gauge.  Is this a buster for the air or what?

     

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    douger
    Participant
    Member
    United States
    Accuracy: +64

    its for hanging a bottle you take off front bottle use a smaller bottle on you belt or back back tether a bottle like paintball guys do, 

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    douger
    Participant
    Member
    United States
    Accuracy: +64

    wouldnt be regulated either i wouldnt think 

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    Vetmx
    Participant
    Member
    United States
    Accuracy: +85

    There is a critical piece that allows you to tether the gun using the rear fitting. Last I heard they were leaving it out because the gun was more consistent without it. Guys were trying to tether the gun and it wouldn’t hold air without the bottle on it. The easiest way to know if your gun will work tethered is to see if it holds air without the bottle on it. Your gun only has one plenum. That’s why the fitting is there.

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    douger
    Participant
    Member
    United States
    Accuracy: +64

    maybe has to have the power plenum to work  kinda different for sure  aoa did videi and he talks about it  

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    Vetmx
    Participant
    Member
    United States
    Accuracy: +85

    No, the plenum extension just adds a little more volume to an already more than adequate plenum. The original Priest could be tethered using the rear fitting. Some Priest ll’s could, some couldn’t. It’s no different than the little disc that centers your shroud. RTI is always trying to improve the gun and that’s why that disc changed somewhere mysteriously as the gun evolved. The disc with all the tiny holes was found to be better. The thing that lets you tether has to shut off the air that wants to flow from the plenum back to the bottle. From what I remember, the gun was found to be more consistent without it. Maybe they reincorporated it with the Prophet. Easy enough to find out. I never cared because I have no interest in tethering.

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    MikeVV
    Participant
    Member
    United States
    Accuracy: +23

    Yes, both the Prophet Performance and the Compact have the "tethered" fitting.

    That fitting on my full size gun (Prophet Performance) leaked.  About 100 bar every two days.  LONG story short, it's got a pipe plug in the rear fitting location now.  No more leakage.

    Mike

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    Blackpaw
    Participant
    Member
    United States
    Accuracy: +26

    Thanks all, so translation, cap it and don’t mess with it.

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    Riaandw79
    Participant
    Member
    South Africa
    Accuracy: +0

    A bottle regulator is possible. Paintball guys been doing it for a while.

     

    Am I wrong for assuming that as long as the tether supply is over the regulator supply it should bypass the bottle? Sure there could be a plug designed for the bottle fitting also.

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    Deleted Account
    Accuracy: +0

    Blackpaw

    Thanks all, so translation, cap it and don’t mess with it.

    Cap it with the rubber thingy and leave it alone.

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    Joedirt199
    Participant
    Member
    United States
    Accuracy: +3

    Riaandw79

    A bottle regulator is possible. Paintball guys been doing it for a while.

     

    Am I wrong for assuming that as long as the tether supply is over the regulator supply it should bypass the bottle? Sure there could be a plug designed for the bottle fitting also.

    There is a check valve to keep air in the valve and plenum that would keep the rear tether air from going backwards in the system and going into the bottle. It is in the long tube under the shroud. Some guys take it out for super high power and need all the air they can get.

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    Riaandw79
    Participant
    Member
    South Africa
    Accuracy: +0

    Joedirt199

    Riaandw79

    A bottle regulator is possible. Paintball guys been doing it for a while.

     

    Am I wrong for assuming that as long as the tether supply is over the regulator supply it should bypass the bottle? Sure there could be a plug designed for the bottle fitting also.

    There is a check valve to keep air in the valve and plenum that would keep the rear tether air from going backwards in the system and going into the bottle. It is in the long tube under the shroud. Some guys take it out for super high power and need all the air they can get.

    Thanks, that makes more sense now. Another thought is that it's easy to dual regulate with a tethered regulated bottle supply connected before the regulator. Bottle regulated to say 170bar and plenum regulated to 150bar if consistency is of importance. 

    Had been wondering if the hammer has enough energy for over 200bar. Might be a bit violent tho. A reliable little bird whispered in my ear that something is cooking at RTI for the high-power guys.

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