I was wondering why the pucks for .22 .25 are not conical to match the drills of the magazine plates so air will push the pellet/slug directly and not against the plate? Would not be more efficient? and, maybe, quieter ? I guess I miss something . I would appreciate your help. Thank you
Leshiy 2 - PUCK · TRANSFER PORT SLEEVES
- Thread starter TOSCATUN
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When you shoot the puck fly's/moves out of pocket and pushing against the mag plate+mag+pushing all against the ball nose on barrel and seals all gaps as much the design allows.
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months ago i asked the same question, and recently egw is suggesting this might help quiet it down.
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I wondered the same thing, I look at the ports of these guns the same way I would an engine. Good smooth transitions can help power and efficiency.
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A puck of smaller diameter may direct the flow to the center of the pellet but it does that by restricting the flow. I am talking about pellets with 5.5 and 6.32 mm., puck orifices are either below 3 mm or full bore 7.3 mm
I am not sure that puck moves towards the plate.It may happen with restricted ones, but not with the full bore one. I understand that pressing the magazine towards the barrel would not help the magazine to rotate.
As Cranky1 says I believe a smooth transition would improve system efficiency, and puck nozzles should concentrate the air from the 7.3 mm of the valve orifice to the corresponding caliber plate orifice (5.75 mm in the specific case of 0.25 caliber)
I will try to get produced some conical pucks and see what happens.
I am not sure that puck moves towards the plate.It may happen with restricted ones, but not with the full bore one. I understand that pressing the magazine towards the barrel would not help the magazine to rotate.
As Cranky1 says I believe a smooth transition would improve system efficiency, and puck nozzles should concentrate the air from the 7.3 mm of the valve orifice to the corresponding caliber plate orifice (5.75 mm in the specific case of 0.25 caliber)
I will try to get produced some conical pucks and see what happens.
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a well lubricated puck and o-ring will always move forward because of the back pressure, a fully restricted one will have the full force e.g. 110 bar per sq cm behind it, any lesser restricted one will have the force of the outer area (the OD) minus inner area (the hole) behind it
so yes, the full bore one will be push with less force but still move and press against the mag plate/mag
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Full bore one has same inner diameter than the valve orifice, if I am not wrong, so puck may not move but air pressure will as you say press directly the area between puck ID and pellet orifice.
If, as you state, puck moves, a conical puck may have the same effect you mention, push puck against plate, but air would flow directly into the pellet thus being more efficient ?
If, as you state, puck moves, a conical puck may have the same effect you mention, push puck against plate, but air would flow directly into the pellet thus being more efficient ?
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I see a lot of people trying to tune with the puck, but I have not gone down that road. The way I look at it is this - the biggest restriction is the hole in the magazine back plate so why do I want to mess with the puck when it's true purpose appears to be making a tight seal between the transfer port and the magazine. It's a very hard plastic that appears to have a lubricated quality to it so that the magazine will move smoothly across its surface.
I have done all of my tuning with just the reg and nozzles and have been able to achieve some very good efficiency. Maybe the puck would be like a final super fine tuning mechanism, but IMO it does too little to make it worth it.
Not trying to put down or discourage anyone tuning with the puck and I will remain curious (but suspicious) to hear about any validated positive impact the puck has.
I have done all of my tuning with just the reg and nozzles and have been able to achieve some very good efficiency. Maybe the puck would be like a final super fine tuning mechanism, but IMO it does too little to make it worth it.
Not trying to put down or discourage anyone tuning with the puck and I will remain curious (but suspicious) to hear about any validated positive impact the puck has.
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yes conical or not, same push - and conical may be more efficient but as ctshooter notes...
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Forget the mag plate once and you will realize even the full bore puck gets pushed against the mag. Don’t ask how I know…. But this helps seal the pressure against the mag plate. It would be a fun project to try a full bore vs taper bored puck for say 22 cal. But it might have very little effect( say 5fps difference)
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