Bobby_M
Contributor
Hey Paul,
Both Scott's (Padipro) and my designs work just fine (as well as others here of course). I think what you're talking about is something like this, which is what my version 2 housing is using:
Scott's design of capturing the O-ring in a U-shaped gland is one way, but I think the outer wall of that gland is somewhat unnecessary. It's the inner wall that stops the water pressure from pushing the O-ring into the housing. FYI, this is the same concept utilized in my V1 housing only it used two outer rings with the Oring in between. Either way, the exterior of the O-ring is exposed. Maybe this is help:
You'll also see that a lot of designs that have the acrylic sitting directly on the O-ring will be machined into a tophat shape so that part of it actually inserts into the housing. I found that if you use at least 3 latches equally spaced, it is not necessary to do.
By the way, while I succeeded in heat forming the outer rings, I decided to ditch them in favor of 4" PVC couplings. I didn't like how tight they fit onto the pipe and there's really no easy way of slipping them into position with the cement setting on you. I only require 3 couplings for two housings for a a couple dollars. Much easier than the heat forming.
Bobby
PS: The V1 housing just did another 6 dives in Cozumel this past week for a total of 12. No leaks at all to a max of 97 feet.
Both Scott's (Padipro) and my designs work just fine (as well as others here of course). I think what you're talking about is something like this, which is what my version 2 housing is using:
Scott's design of capturing the O-ring in a U-shaped gland is one way, but I think the outer wall of that gland is somewhat unnecessary. It's the inner wall that stops the water pressure from pushing the O-ring into the housing. FYI, this is the same concept utilized in my V1 housing only it used two outer rings with the Oring in between. Either way, the exterior of the O-ring is exposed. Maybe this is help:
You'll also see that a lot of designs that have the acrylic sitting directly on the O-ring will be machined into a tophat shape so that part of it actually inserts into the housing. I found that if you use at least 3 latches equally spaced, it is not necessary to do.
By the way, while I succeeded in heat forming the outer rings, I decided to ditch them in favor of 4" PVC couplings. I didn't like how tight they fit onto the pipe and there's really no easy way of slipping them into position with the cement setting on you. I only require 3 couplings for two housings for a a couple dollars. Much easier than the heat forming.
Bobby
PS: The V1 housing just did another 6 dives in Cozumel this past week for a total of 12. No leaks at all to a max of 97 feet.
