Flex .30 modification log Refurbish, Update, Hack



Author Topic: Flex .30 modification log Refurbish, Update, Hack  (Read 1682 times))

Offline PCPhack

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Flex .30 modification log Refurbish, Update, Hack
« on: February 14, 2019, 01:04:54 PM »
I have a new to me early production .30 Flex. It's time to fix her up.

To be performed

  • Deep cleaning Done
  • Rusted hardware replacement Done
  • Regulation addition Done
  • Valve upgrade Done
  • Bottle upgrade - 350cc CF bottle Done
  • Tensioner and moderator update and decibel comparison Done
  • Air tube (plenum) extension testing Done
  • NSA and Mr. HP slug grouping test

Upon receiving it, I filled the tank to 3000 and shot around 6 times. The pressure was down to 2000, so out of tune (though to be dair a few hundred PSI was just the tank cooling). The next day, all pressure was gone, so it also leaks. The barrel is dirty, but I am glad, as there is also some screw hardware rust, so lots of lead fouling has probably helped protect the bore of the barrel since there has been some moisture exposure. The tank has a chip, so will replace it for safety and destroy the old one.
« Last Edit: February 24, 2019, 09:07:14 PM by PCPhack »
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Offline PCPhack

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Re: Flex modification log Refurbish, Update, Hack
« Reply #1 on: February 14, 2019, 01:48:15 PM »
Original hammer and valve

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Offline PCPhack

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Re: Flex modification log Refurbish, Update, Hack
« Reply #2 on: February 14, 2019, 01:58:54 PM »
Barrel port could use some smoothing. I will re-examine this with the barrel tensioner on and single grub screw loose to see if that lip disappears.

Update: This dissappeared after cleaning everything and removing an old piece of oring out from behind the barrel retention clip washer. I will not touch this port.
« Last Edit: February 15, 2019, 08:25:33 PM by PCPhack »
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Offline PCPhack

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Re: Flex modification log Refurbish, Update, Hack
« Reply #3 on: February 14, 2019, 07:51:55 PM »
The first order of business was the barrel cleaning, as I was concerned about the bore. I saw some bumps near the choke, but they turned out to be just lead deposits. After a very thorough cleaning with a brass brush and about 30 fp10 soaked patches they came out completely, and the barrel is shiny. I don't see any pits either. The crown has no defects. Whew.

The outside of the barrel had a few small surface rust marks, but these came right out with 0000 steel wool and balistol for polish.

Before and after pictures.

« Last Edit: February 14, 2019, 08:36:25 PM by PCPhack »
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Offline PCPhack

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Re: Flex modification log Refurbish, Update, Hack
« Reply #4 on: February 14, 2019, 07:58:19 PM »
Breech and bolt had quite some gunk. An alcohol bath and cheap toothbrushes have them ready.

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Offline PCPhack

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Re: Flex modification log Refurbish, Update, Hack
« Reply #5 on: February 14, 2019, 08:03:15 PM »
Look what's hiding in my box of parts. Both new.

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Offline PCPhack

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Re: Flex modification log Refurbish, Update, Hack
« Reply #6 on: February 14, 2019, 09:59:25 PM »
Someone asked me how bad the chip in the old tank was. Here are two shots.

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Offline ShakySarge

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Re: Flex modification log Refurbish, Update, Hack
« Reply #7 on: February 14, 2019, 10:03:08 PM »
Fairly significant nick in that tank. Hit me up in PM and we will see what we can work out. Given it's small size, it can likely be salvaged.
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Offline Christopher

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Re: Flex modification log Refurbish, Update, Hack
« Reply #8 on: February 14, 2019, 10:44:49 PM »
Nice work on everything thus far. Will be following your progress. How long is the barrel?  Looks longer than standard just judging by the picture.

Thanks,
Chris
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Offline PCPhack

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Re: Flex modification log Refurbish, Update, Hack
« Reply #9 on: February 14, 2019, 10:52:33 PM »
The barrel is 17 inches and is a .30. It looks long as the early Flex had a long moderator the same diametwr as the shroud bedore it, making it look long.
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Offline PCPhack

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Re: Flex modification log Refurbish, Update, Hack
« Reply #10 on: February 14, 2019, 10:55:17 PM »
The bottom rail supoort rods are ready. These were fun to refresh with the drill press and oil soaked wet/dry 320 grit paper.

Before and after



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Offline PCPhack

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Re: Flex modification log Refurbish, Update, Hack
« Reply #11 on: February 14, 2019, 10:56:30 PM »
Fairly significant nick in that tank. Hit me up in PM and we will see what we can work out. Given it's small size, it can likely be salvaged.

I really don't think it is a good idea.
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Offline oldpro

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Re: Flex modification log Refurbish, Update, Hack
« Reply #12 on: February 14, 2019, 11:17:23 PM »
Fairly significant nick in that tank. Hit me up in PM and we will see what we can work out. Given it's small size, it can likely be salvaged.

I really don't think it is a good idea.
drill a hole in it and throw it away
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Offline PCPhack

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Re: Flex modification log Refurbish, Update, Hack
« Reply #13 on: February 14, 2019, 11:18:05 PM »
You know you have a dark side problem when you have extra long alloy steel bolts that are the exact ones a Flex or Marauder with custom breech riser needs in your parts. Lol.


New ones on the bottom.
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Offline PCPhack

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Re: Flex modification log Refurbish, Update, Hack
« Reply #14 on: February 14, 2019, 11:19:32 PM »
Fairly significant nick in that tank. Hit me up in PM and we will see what we can work out. Given it's small size, it can likely be salvaged.

I really don't think it is a good idea.
drill a hole in it and throw it away

I was thinking to shoot it with the Flex. Hehe
  • Texas, USA

Online KnifeMaker

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Re: Flex modification log Refurbish, Update, Hack
« Reply #15 on: February 14, 2019, 11:48:27 PM »
With my old shoebox using silicon oil, an my lubing with silicone 10 wt for bullets, the TJ's barrels have never had a spec of rust on them. Seems the silicone fills the shroud with some mist, the barrels always have a thin layer of silicone waterproofing. 


For pellets, I use FP-10 Same results! 8)


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Offline PCPhack

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Re: Flex modification log Refurbish, Update, Hack
« Reply #16 on: February 14, 2019, 11:56:55 PM »
Michael, I use the same, so going forward, this rifle won't be at risk ever again.
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Offline PCPhack

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Re: Flex modification log Refurbish, Update, Hack
« Reply #17 on: February 15, 2019, 12:08:27 AM »
The tube was plenty nasty inside and out. Now clean and was even able to remove 2 surface rust spots without ruining the black finish.
« Last Edit: February 15, 2019, 12:56:17 AM by PCPhack »
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Offline PCPhack

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Re: Flex modification log Refurbish, Update, Hack
« Reply #18 on: February 15, 2019, 12:45:55 AM »
Thanks Ballistol. Stock is clean.

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Offline PCPhack

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Re: Flex modification log Refurbish, Update, Hack
« Reply #19 on: February 15, 2019, 01:04:32 AM »
Heart transplant time! Wow, whoever made this even signed it. ;)



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