I have an impact mk2. I need help to restack the washers. I have try looking YouTube. I see video from Utah airgun and ernest. But their video is mostly just talking and they do not show an diagram how each washer is stack. I do not know how it's stack by them talking and not showing a diagram.I do not see anyone except ernest talk about how each washer is different thickness. Does no one actually measure the washers? Cause I had 7 washers range from .44-46mm and 4 washers range from .55-57mm. Can anyone here tell me how they are stack? There are 11 total washers. Also mention where the thinner and thicker washers goes. Start from left will be the reg housing, right will be toward the plastic piston. Thanks
FX Fx impact amp reg. Washer stacking
- Thread starter 2fast2furious
- Start date
I just went through this to repair a Maverick. The factory AMP reg stack goes like this:
)()()()()() ==[]
Washers/Piston
)()()()()() ==[]
Washers/Piston
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Sub 12 airgunner on youtube shows you how to stack washer i think he said first is convex then concave then repeat
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Ok. So does the .4xmm goes in the middle and .5xmm on the outside? That's what I'm thinking.
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I had two MKll PP Impacts. My stacks looked like this. Orientation is related to your piston pic (() () () () ()
I never concerned myself with the thickness of each because I never got them out of order.
I never concerned myself with the thickness of each because I never got them out of order.
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The consensus of people much smarter than me is to keep the thickness paired together. If you mix and match thicknesses you can possibly get slight creep or inconsistent Bar between shots. Mr Rowe has said he likes to measure and keep the same thickness for the whole stack for his competition rigs. I dont think most people need to go that far but he did say his testing showed a difference when pairing thickness. The order of thickness probably wont matter, and really you may never even notice a Bar or five between shots.
As a side note, FX seems to not put the stacks together the same every time from the factory. My front reg was not able to go above about 130Bar with the stack like this: (()()()()() ==[]. If you want to change the working pressure range of your reg you can play around with the top 2 or 3 washers.
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Seem like only 1 person went with )()()()()() and the rest went with (()()()()() so I will stack mine (()()()()(). I guess thickness doesn't matter where they are place as long as same thickness are pair together. So that's what I will do.
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For most people (()()()()() vs )()()()()() wont really make a difference since the usable pressure range only becomes an issue when going with really high settings. And since there is so much variance in washer thickness and spring rates etc, each reg is different. The main thing I think is to make sure you have 11 washers and dont stack them (()(()()))(()( like a total lunatic lol.
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