Rebreather World - View Single Post - DrMike OC 2nd p-port adapters for Drager

mempilot · 5th May 2008, 18:56

Problem solved. As expected, the dimensions of the Apeks ATX mouthpiece with with lip removed matches the Drmike OC 2nd-stage p-port adapter.

I Dremel'd the lip off, etched the surface of the regulator mouthpiece port and the inside of the p-port adapter with sandpaper, cleaned it all with Acetone, and applied a liberal amount of clear marine grade silicone to both parts, and pushed them together.

While Mike's machining is precise, the Apeks machining is not. This is why I put a lot of silicone on both parts and cleaned off the excess once the parts where mated. This ensures there are no air pockets between the two parts that can contract and expand. I played around with putting a 1.25 inch o-ring between the two pieces where they seat together when mated, but without positive pressure pushing the two together, I think it is a waste of time.

I will positive and negative pressure check the newly mated pieces once the silicone is fully cured.

5th May 2008, 18:56	#10 (permalink)
mempilot Eric Stadtmueller Current Rebreather/s: Megalodon Other Rebreather/s: Megalodon Join Date: Aug 2006 Location: Ft. Lauderdale Posts: 1,442	Re: DrMike OC 2nd p-port adapters for Drager Problem solved. As expected, the dimensions of the Apeks ATX mouthpiece with with lip removed matches the Drmike OC 2nd-stage p-port adapter. I Dremel'd the lip off, etched the surface of the regulator mouthpiece port and the inside of the p-port adapter with sandpaper, cleaned it all with Acetone, and applied a liberal amount of clear marine grade silicone to both parts, and pushed them together. While Mike's machining is precise, the Apeks machining is not. This is why I put a lot of silicone on both parts and cleaned off the excess once the parts where mated. This ensures there are no air pockets between the two parts that can contract and expand. I played around with putting a 1.25 inch o-ring between the two pieces where they seat together when mated, but without positive pressure pushing the two together, I think it is a waste of time. I will positive and negative pressure check the newly mated pieces once the silicone is fully cured. __________________ Eric Stadtmueller, otherwise known as, MEM "Da Pilot"
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