Quote:
Originally Posted by ThunderCactus
Why would you want to reduce the air volume? My vsr managed to magically be dead silent without an air brake or the sorbo pad with a 430mm barrel.
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The key here is 430mm... the G-Spec has a 303mm barrel, so the huge amount of excess air is akin to a leak, it allows the piston to accelerate further once the BB is out and make a lot of noise. Either you port the cylinder or you get rid of the excess air using other means, such as sorboes. This is why I was asking if it's possible to stack the Laylax sorboes, it seems like an easy way to remove air volume. It would kind of act like the PDI short stroke cylinder head (now discontinued). But I wonder if the deformation of the sorbo pads at impact could bend/break the piston air break or affect the airflow.
In my case I have two VSR10, a cheap clone TSD with a 509mm barrel and a King Arms cylinder set that is dead silent (with the piston air break removed, replaced by a screw), and my Marui G-Spec with a PDI cylinder kit. With the PDI metal piston it is as loud as an AEG if not more. With the King Arms piston (a clone of the Laylax piston, but with a smaller diameter equal to the PDI piston) it is MUCH quieter, but still far from silent. The piston air break probably doesn't work well with the PDI cylinder head due to its conical air canal, but the rubber pad on the piston head does marvels to quiet the rifle.
Anyway, that's my experience. As far as I know, both of my VSR have good seal as they have very stable FPS output, so I would think that it's not responsible for my G-Spec's noise.