i see fx impact swapped out the reg piston to brass like the huma anybody got one yet 21.80 from fx usa im sure they will sure be a better design fx did great job fx as we all think the huma with brass is great reg got one coming so time will tell
brass impact regulator piston
- Thread starter douger
- Start date
Need supporting evidence/more info. I've had a plastic piston on backorder since last fall.
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@ DOUGER- you have a link? I went thru all of UAG’s website on fX and impact parts related stuff and didn’t see anything
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It is true, but they are not available yet. I heard Roelf mention it in his most recent video. Called Utah Air and they confirmed, but said its not been officially announced yet and they don't have any.
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We've been playing with brass reg pistons for a while now done a few different types delrin tip, PTFE tip, brass tip, in sub 12 we only run low reg pressure and there is no real benefit but maybe at higher pressures it may be better
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right im sure the brass will just last longer if higher regs plus the washers wont dig into the plastic and wear it out as they do get worn out after time
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This looks very interesting, will definitely try one if I can get my hands on some. Granted I really have no issues at all with the plastic ones.
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The main thing I'm looking to get from a brass piston is reduced set point shift due to temperature changes. It's very noticable on the plastic piston. 70deg F to 40 deg F is around 10 bar change on my M3. Other than that issue, the plastic piston works great and it has the advantage of not needing a separate sealing surface material.
I wonder if they will offer the brass piston as a "200 bar upgrade package" that includes a full stack of 0.6mm belleville washers. Huma uses that for their 200 bar setup. The default AMP stack is 50/50 0.5mm and 0.6mm washers. I suspect 200 bar may be pushing the hybrid spring stack a bit too far.
I wonder if they will offer the brass piston as a "200 bar upgrade package" that includes a full stack of 0.6mm belleville washers. Huma uses that for their 200 bar setup. The default AMP stack is 50/50 0.5mm and 0.6mm washers. I suspect 200 bar may be pushing the hybrid spring stack a bit too far.
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Well from what i was told the brass has been used in the newer m3 for months-like the power blocks on the 22 cal impacts have been installed for last few months
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The brass works fine in sub 12, the style in the pic has been in my impact for 2 years with no issues at all, my M3 has a different design the delrin tip go's in to a recess rather than on the top and that one has been working fine since the M3's release ( i was lucky got one of the first in the UK) so they last well but for us in the UK that's the only benefit i can see with them, but for you boys in the US with high power they maybe of more benefit.
There is no down side i have found so they will be worth a try
There is no down side i have found so they will be worth a try
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Hello
I installed the new piston and I can't get pressures above 135bar
Notice that the new piston is longer than old one about 0.5mm
Someone with the same problem?
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Thanks douger, I just emailed fx usa and they are sending me 2 of the new brass pistons. Almost $30 shipped for both of them.
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