Become an AGN forum member to be included in our multi-thousand dollar Monthly Airgun Giveaways! Winning is as easy as picking a number, no strings attached! This is our way of thanking you for being a part of the worlds biggest airgun forum. Yours truly, Michael Wendt - Owner.
Join HERE

Odd Taipan Mutant air leak.

Forums PCP Airguns PCP Airgun – Discussion Odd Taipan Mutant air leak.

  • Views : 944
  • Link

    JDShapp
    Participant
    Member
    United States
    Accuracy: +7

    I encountered a big surprise last night when I dug the Mutant out and decided it was time to squeeze off a few rounds. When I went to fill it up I discovered it had a leak, but not any leak I've encountered yet with an air rifle. When I tried to fill it beyond 125bar it immediately started leaking, but rather than degassing complete it simply stopped once it hit 125 again. After a couple test shots to see if it was going to hold I decided to leave it over night thinking, well hoping anyway, that it might have been something to do with being in cold temperatures in the car the last few weeks. After letting it warm up in the house I gave it another go after work tonight and got the same result.

    So the question is, does anyone have a clue of what I'm looking at doing to solve this weird little problem?

    Link

    Motorhead
    Participant
    Member
    United States
    Accuracy: +78

    O-rings starting to harden and take a shape set due to years of being under pressure.

    As an o-ring sits in there groove and get exposed to high pressure it is NO LONGER ROUND. Over time the shape created by pressure will take a semi permanent set to this shape.

    * If you have ever resealed a PCP and found the rings to come out kinda square and sometimes HARD .. there ya go !!

     

    Once an o-ring is no longer round and no longer soft enough to shape shift with the pressure it has a high likelihood of leaking and especially so as pressure it must seal increases.

     

    A little bit of O-rings 101 .. not a college course.

     

    Scott S

    Link

    Centercut
    Participant
    Member
    United States
    Accuracy: +181

    Sounds like an internal oring leak in the regulator. If you're mechanically inclined, not a big job. If you're not, the "easy button" is to replace the reg. with a Huma.

    Link

    JDShapp
    Participant
    Member
    United States
    Accuracy: +7

    I'm mechanically inclined enough to have a crack at it. Only real problem I got is the only reference videos I can find anymore is Ernest's video on the Veteran's being taken apart. I'm guessing as long as I manage to keep the washers stacked correctly during it all I'll be good.

    Link

    Centercut
    Participant
    Member
    United States
    Accuracy: +181

    Yes, also measure the reg. length prior to disassembly. That way you can return it to the same length when you put it back together. Otherwise it'll be brutal getting it back to the same pressure without a reg. tester…

    Link

    Frear42-_.
    Dealer
    Dealer
    United States
    Accuracy: +6

    Once a PCP starts to leak it is time to replace all the 0-rings. If you replace only the reg 0-rings and put it back together it will likely leak right away from somewhere else or will soon afterwards.

    I rebuild the PCP's all the time, if one 0-ring is hardened and flat there are usually others in the gun as well.

    Thanks

    Charlie Frear, Georgia Airguns

    Link

    JDShapp
    Participant
    Member
    United States
    Accuracy: +7

    Looks like I'll be doing a complete reseal then. Now I'm glad I ordered that fresh container of silicone grease last week.

    Link

    JDShapp
    Participant
    Member
    United States
    Accuracy: +7

    I managed to get the reseal done with about as much trouble as I expected. Only O-ring I found damaged was the one between the air tube and the block. That one was so bad it broke in half when I took the pick to it. I'm pretty sure I went a little overboard on the silicone grease because the first couple test shots have sent some excess out of the vent for the regulator.

    Now I play the waiting game to see if it has any slow annoying leaks.

    Link

    Heyday33
    Participant
    Member
    United States
    Accuracy: +0

    Following your progress – have the same problem with Taipan Vet standard 22 – loses about 20 bar/day – have ordered new O rings all around with a Huma regulator for a rebuild – I will be interested to know that you solved the problem.

    Link

    JDShapp
    Participant
    Member
    United States
    Accuracy: +7

    No leaks so far. Now I just have to dig out my chronograph and find a day with acceptable weather to see how close I got to the original settings on the hammer spring.

    Link

    amoxom
    Participant
    Member
    United States
    Accuracy: +14

    Where can I get an O’ring kit for my taipan? I’m having the same issue in that it fills to 100bar, then leaks if I go beyond that. It stops leaking at around 90bar. I’ve tried texting talon tunes where I bought the gun and get no reply.

    Link

    Vhunter
    Participant
    Member
    United States
    Accuracy: +0

    I recently got a used Taipan Mutant .22 standard and have a similar issue with air leaking out from where the grub screw holds the valve in the receiver and around the air tube base meets the receiver. Starts to leak if I charge anything past 110 bar but will stop once it gets down to 110 bar. Any further updates on if the OP's gun is fixed? Is the seal that failed #97 (13.5mm x 2mm O-ring) on the exploded parts schematic and does that seal the tapered end of the base to the front of the brass valve?

    • This reply was modified 1 year ago by Vhunter.
    Link

    JDShapp
    Participant
    Member
    United States
    Accuracy: +7

    Just to update those that asked my mutant has held a steady 210 bar since the reseal was done.

Viewing 13 posts - 1 through 13 (of 13 total)

You must be logged in to reply to this topic.