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Thread: TX200 REPAIR

  1. #1
    Sharp Shooter
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    Default TX200 REPAIR

    Since purchasing the gun on the forum in 2014, I have never been happy with the performance, I replaced the main seal, the breech seals, tried short stroking with a LGV/LGU piston without success.

    The best thing I ever did with the TX200 was to put itís mainspring in my LGU!

    I decided to replace the original piston, stripped the gun down and did a complete re-lube, even treated it to a full pull throughs to clean the barrel.

    All reassembled and whilst cocking it for the second test shot noticed black gunk covering the compression tube.

    I had washed the comp tube out with parrafin and dried it with paper towel, the flipping thing must be leaking!!!

    Could that have been the problem with this rifle all along?


    Gunky comp tube



    Comp tube transfer port plug leaking



    Hier's K@k!


    Dodgy design and damaged o-ring



    O-ring groove damaged by plug bottoming in thread



    Bigger section o-ring in different place



    Reassembled comp tube and new breech seals for good measure


    Chrony string after repair, improved accuracy but MV way below what it should be, new spring on order!
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  2. #2
    Sharp Shooter

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    Get a vortek kit for it, springs are much better than the factory ones.
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  3. #3
    Sharp Shooter
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    A new AA FAC spring did not improve accuracy of velocity, in fact way down on MV values I could find on the net.

    Riaan told me about a blog by Tony Leach and I read he had short stroked TX's by placing a polyurethane spacer in the comp tube.

    A couple of tap washers and super glue later and I had a similar mod stuffed down the comp tube of the TX, I am encouraged with the results.

    Shooting off sandbags in near perfect conditions yesterday afternoon I got the best accuracy I have ever got out of this TX.


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  4. #4
    Sharp Shooter
    The Professor

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    You do realise that by moving the plug o-ring to the front of the threaded section you are allowing air to bleed into the threads during compression, causing lost volume which is not helping the rifle to generate a proper muzzle velocity.

    The o-ring is meant to be at the rear groove to seal the threads off from the cylinder.

    I would suggest getting a new end plug and correcting what has caused the 'bottoming out' that damaged the original one and seal it where it is meant to be sealed.
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