Clear/Polycarbonate LDC.

Forums PCP Airguns Clear/Polycarbonate LDC.

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    ackuric
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    If this anyway violates any forum policy I apologize and feel free to lock/move the thread. This is a stock marauder LDC extended 1″ using clear/polycarbonate tubing and modified to be detachable for easier transport.

    Got this idea on another forum, said I’d do it and I am a man of my word and thought it would be a fun little project considering I made my ldc detachable on my marauder which eliminated 1 baffle due to space being lost in the process. This new ldc now sports a total of 8 baffles which is 1 more than stock so I am happy about that, the noise reduction is slight but noticeable.

    The polycarbonate tubing is 7/8″ OD (same as stock shroud od) and 3/4″ ID. The ID of the stock shroud is more along the lines of .775″~ so I had to sand down the inside of the tubing to allow the baffles to fit. I then tapped/threaded the 13/16-28 cap and used a secondary 13/16-28 cap to attach to the existing shroud that was cut down in length. The secondary 13/16-28 cap was reduced down on the non-threaded end so it could be press fit and glued in place as an adapter on the new LDC.

    Eventually I’ll wrap this in carbon fiber vinyl like my other shorter LDC but for now I’ll keep it clear for the cool factor. The other plus side to this mod is I shaved off a few more ounces of weight! Going from aluminum to polycarbonate saved 1/2 ounce on this ldc. I could shave another 3-4 oz or so if I do the rest of the shroud in polycarbonate which would take my rifles weight under 4.5 lbs! I have enough tubing left over to do so as well!

    Total cost of this modification was roughly 20$. (10$ for 3 feet of tubing, 10$ for sandpaper + shroud cap+extra baffle from crossman)

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    Mattblum
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    That is very cool. Thanks for showing it!

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    jefe75
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    How much would u charge me to make one for my Diana stormrider in.177cal…
    ([email protected])

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    ackuric
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    Here is a quick video showing the ldc in slow motion. Note there is small amounts of vibration/oscillation. Also note the spring installed is MUCH lighter than stock, and even at 45 FPE there is next to no compression on the spring. I did test with a spring in front and in the back but this causes a huge transfer of energy and I’ve popped the glued adapter off the ldc a few times this way, the baffles act as projectiles being hit by a blast of 400~ or so left over psi. I’d only trust the dual spring setup in a metal ldc that is fully threaded front to back.

    What I like about a clear LDC is that you can see how effective it is to a degree. Would be cool to put some kind of dye in the LDC so when it fired you could visually see how the air moves. If I had a camera that filmed at 10,000 fps I would go to such lengths but being limited to 200~ FPS really doesn’t provide much data for me.

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    Kinetic45
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    What I found interesting is the vibration shown, the end of the moderator really waves around!.  I think it happens AFTER the pellet leaves the barrel but have you checked for clipping?
     

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    ackuric
    Participant
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    I agree that I believe the vibration occurs after the pellet leaves the barrel and I have checked for clipping and have none so far. The end cap and last baffle are drilled open to .335″ for extra measure which leaves .0425″ around the pellet as it exits. compared to the rest of the baffles which are around .325″.

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