Fx Impact Fix & Mods for more FPS / FPE
- Thread starter AirSupply
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I also contacted Muchal, its going to be sent next week.
Beside that, just received from Johan FX new mk2 plenum and valve housing. Interesting thing about VH is that there is no valve seat ring.
Valve seat is integrated in VH ... and dia inside is 6.35 even maybe 6.5mm ... I cant measure it since is deep insode.So, I believe no more isue with VS.
Finaly, my Impact x has become Impact X mk2.
Will be fun to test 70cc plenum and see where we go with it.
My beauty and the beast
Beside that, just received from Johan FX new mk2 plenum and valve housing. Interesting thing about VH is that there is no valve seat ring.
Valve seat is integrated in VH ... and dia inside is 6.35 even maybe 6.5mm ... I cant measure it since is deep insode.So, I believe no more isue with VS.
Finaly, my Impact x has become Impact X mk2.
Will be fun to test 70cc plenum and see where we go with it.
My beauty and the beast
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Nice! is 6.35 and now is easier to drill! jajaja
Hahaha... yep, no fac thongs drill it asap.... hahaha
Edosan ... what is the benefit going from 6.35 to 7mm since u test it... have u measure it or compare, do you have some numbers. Thx
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Nice! is 6.35 and now is easier to drill! jajaja
Hahaha... yep, no fac thongs drill it asap.... hahaha
Edosan ... what is the benefit going from 6.35 to 7mm since u test it... have u measure it or compare, do you have some numbers. Thx
I'm also curious of any data on this topic. I think my MKII has this same one piece unit judging by everything else, but I don't think there's any benefit for 22 cal going larger than 6.35mm - probably 25 cal and up. I'd love to be wrong about that though!
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No sorry, I left data for the statistics... For me is all about accuracy, hate data, I keep the important one in my head, but is easy! Shoot with the impact the 0.30 cal @ 1000 fps 44.7gn and you will see the difference, I do that @125 bar (digital gauge now) , and accurate as hell.
I will never ever do a post with stats
Next year I plan to compete in the big 3 in USA so I can borrow you Silver Surfer and you can take all the data you want
I will never ever do a post with stats
Next year I plan to compete in the big 3 in USA so I can borrow you Silver Surfer and you can take all the data you want
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Can the transfer port mod can be improvised for more fps gain (pic below). Cuz i am getting around 945fps with 25 grains at 150 bars with the new valve housing and additional plenum of mk2.
I am also unable to install the 5.8valve seat in the new housing because its already built into it unfortunately.
Need to know if the below porting can be improvised. Thanks
I am also unable to install the 5.8valve seat in the new housing because its already built into it unfortunately.
Need to know if the below porting can be improvised. Thanks
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If you have the integrated valve seat it's opening is 6.35mm. No need to go larger for your caliber.
For the porting you need to work on the port and pellet probe. Measurements in this post > https://www.airgunnation.com/topic/fx-impact-mods-for-more-fpe/page/29/#post-537397
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Hobby, Looking forward t results with your .223. Still testing mine. Found issue, but resolved. Becoming more and more accurate. Shooting right at 1000 fps with the 29.3 gr slug.
Thank you so much for all your hard work and help with this project! ;:<)
Knife
Thank you so much for all your hard work and help with this project! ;:<)
Knife
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The good thing using slugs is you are not limited on velocity. At least the kind of velocity you can get from an airgun.
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Those factory C3 bumpers don't last long eh? Mine split in two today, finally popped my MKII's cherry and opened it up. While I was in there, I installed a 7(.5) gram brass hammer weight in my MKII. I don't have an acetyl bumper right now, but I threw in a duro 90 o-ring that I had (2.90x1.78mm) which looks to be the same size. That should be ok for a little while right?
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