Impact gets the YH external air plenum.

Forums PCP Airguns Impact gets the YH external air plenum.

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    biohazardman
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    I tore the gun down to put in a hammer spring tensioner/washer a month ago and modified the barrel and probe by elongating them a bit to give me a little more omph for slug shooting. I was looking around the house for sumpthin I could use for a plenum when I stumbled across heavy-impacts post and he was using the YH filter.  I really wanted to wait for my VS and new hammer spring before I dove in but it's been over a week since I phoned in my order and even after a couple more e-mails I have not heard a thing from FX.  I was posed to get an email back from them with a link to pay but didn't. So I went ahead with the mods I could do.  I ordered a cheap 10mmx1 gauge from aliexpress and an M10x1 to 1/8bsp male adapter from eBay a few weeks back.  The plenum was going to be hanging in the air by the adapter and I did not like the looks of it. So, I made a Delrin tube that fits over the adapter and tightens in place at the same time both ends of the adapter seal to their Delrin seals on both the gun and in the YH filter. The plenum is on there really good with no wobble nor the chance of any.  I was concerned about leakage but had none. The new M10x1 gauge is sealed with one of the YH seals it's a kind of washer with rubber inside it that I forgot the name of.😊 (dowty seal) Thanks John.  It is holding pressure now so testing tomorrow.

     

    Tore the gun apart

    Had to modify the valve housing drilled a smallish hole in it so the plenum can breathe into it.  No it's not finished yet.  Got the VS o-ring figured out.

    The Delrin tube on the top of the plenum makes it much less likely the thing can be torn off in the event of a drop or similar accident.

    These are the only parts I needed for the install of the plenum the adapter, dowdy seal, spacer and the two small Delrin seals that came already installed inside the gun and with the YH filter.

    https://www.amazon.com/Supermotorparts-Pressure-Oil-water-Separator-Compressor/dp/B07QMVG9T8/ref=sr_1_5?dchild=1&keywords=YONG+HENG+filter&qid=1599298853&sr=8-5

    https://www.discounthydraulichose.com/Search_Results.html?Search=9004-02-10

    The finished product testing tomorrow. This should allow me to lower my reg pressure a bit as I am running at the limits over 150bar now.

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    heavy-impact
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    A Wika gauge will screw right into the M10 thread and seal with the same bonded sealing washer if you want an accurate gauge.

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    biohazardman
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    Thanks, I did not see an m10x1 in the Wika gauges I will check again.  I know I can force the 1/8th bsp in but I would not trust it to stay put.  Especially with the luck I have with things.

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    heavy-impact
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    The 1/8 bsp goes in fine, it just feels a tiny bit loose until you seat it. It'll hold

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    biohazardman
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    Thanks

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    biohazardman
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    This werqed well and allowed me to reduce my reg pressure from close to 160 bar down to 140 bar and retain the same FPE level.  That puts me back inside the spec of the regulator so reg creep should not be a problem.

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    vmaxpro
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    Looks good! One of these days Im going to get an impact lol 

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    Deleted Account

    The rubberized washer is called a Dowty seal. Looks good.

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    Souhaib
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    Its around 15cc ? Right ? 

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    heavy-impact
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    Souhaib

    Its around 15cc ? Right ? 

    20cc I measured mine with water and weight.

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    biohazardman
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    John_in_Ma

    The rubberized washer is called a Dowty seal. Looks good.

    Thanks brain damage I loose words, hours and every now and then a whole day.  The internet really helps with the loosing words thing. Not so much with the hours and days though. ;^)

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    heavy-impact
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    biohazardman

     

    Thanks brain damage I loose words, hours and every now and then a whole day.  The internet really helps with the loosing words thing. Not so much with the hours and days though. ;^)

    Happens with age also I guess. I forget common words and relatives names don't always register as someone you know. It's really embarrassing when it happens in front of my sons.

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    biohazardman
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    Yup I trust it happens with age and I am getting up there but my memory has actually improved greatly in the last couple of years so seven years after I got my head beat in by some unknown with a pipe or something similar.  I'm having a hard time telling what is caused by age or the damage I received.  But at least I have something to blame it on anyway.  Names are very hard for me I just lately was able to remember all of my grand kids names and realized I forgot several my neighbors names.  Think I'm going to start writing them all down as soon as I remember them. ;^)

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    biohazardman
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    John_in_Ma

    The rubberized washer is called a Dowty seal. Looks good.

    Looks like I fergot to say thanks for that.👍

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    GQ
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    Can we set higher pressure than 150 with a extra high pressure Huma regulator 145-190 on Impact first generation ?

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    heavy-impact
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    GQ

    Can we set higher pressure than 150 with a extra high pressure Huma regulator 145-190 on Impact first generation ?

    Yes but there is no need for higher pressure you just need to remove the restrictions and increase plenum size

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    GQ
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    Thank you heavy impact.

     

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    knifemaker
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    Old age and forgetfulness, man, I resemble that remark!  :<)

     

    Knife

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