DSV and Bailouts for pendulem 02 rebreathers

cstmwrks · 19th September 2007, 03:24

This is my low budget DSV Made from a PVC tee and delrin plastic bar stock.

QD port removes for breathing surface air.

Another version made to attach an OC 2ND stage for bailout.

**SeaBass** · 19th September 2007, 06:15

Really nice. Would love to see a tear down to see how you seal the inner cylinder.

Sorry for the MIA.

--SB

cstmwrks · 19th September 2007, 20:57

Hi SB,
I'll have to see about opening them up and take some more images.
Glad you have not dropped off the planet.
Bill

alfa011 · 24th September 2007, 02:31

Hi Bill!

By all means take some images.

Quite a few interested in your version of a pendulum DSV.

AlMir

Quote: (Originally Posted by cstmwrks)

Hi SB,
I'll have to see about opening them up and take some more images.
Glad you have not dropped off the planet.
Bill

cstmwrks · 25th September 2007, 19:55

Sorry for the delay.. Did not realize folks were that interested. Anyhow the valve is made from 7/8" Delrin plastic bar stock. All I did was machine two O ring grooves as you can see:

I did not have a mill so I used a drill press to cut out the breathing path in the bar stock. Removed one side with a razor saw and dressed it out with a Dremel tool.

The body is a plain old PVC TEE with a short chunk of PVC pipe that was turned down on a lathe to make the lip then heated and formed to the normal shape to accept a rubber mouth grip.

The formed ports are heat welded to the main body and the inside is bored out to accept the delrin insert. The fit is close enough that I did not bother to O-ring seal the area around the breathing port. The two on either side do little more than offer a spring loaded retainer. The housing has two minor relief areas machined in the same spot the O-rings are mounted on the Delrin rod. So with some lube and a bit of force you can insert the rod into the body. When the O-rings pop into there relief spots it take a fair amount of force to remove it.

Bill

alfa011 · 26th September 2007, 17:50

Quote: (Originally Posted by cstmwrks)

Sorry for the delay.. Did not realize folks were that interested.

Bill

Hi Bill.. Thank you for the idea.
Will try it at home. Let's see how far I can go with my drill press and Dremel.

By the way.. I have been trying to be without a lathe but it seems unavoidable.

Best regards.

AlMir

cstmwrks · 26th September 2007, 21:50

Hi AlMir,
I gotta admit that with out a lathe lots of these little parts are pretty well out of the question. After my big move to Idaho I was reduced to a little 3" lathe. Great for the small stuff. Making a scrubber housing?? Forget it!.. At least not one with machined parts on it. I did make a jig for a router table to sort of fake some lathe work. I could make uniform grooves on the outside of various tubes and such.

Having just finished ROBOCAM II I hope to take the long drive to a lake with 300 foot vis. next week and take some stills of my latest equipment in use.

Bill

alfa011 · 26th September 2007, 22:50

Quote: (Originally Posted by cstmwrks)

Hi AlMir,
I gotta admit that with out a lathe lots of these little parts are pretty well out of the question. After my big move to Idaho I was reduced to a little 3" lathe. Great for the small stuff. Making a scrubber housing?? Forget it!.. At least not one with machined parts on it. I did make a jig for a router table to sort of fake some lathe work. I could make uniform grooves on the outside of various tubes and such.

Having just finished ROBOCAM II I hope to take the long drive to a lake with 300 foot vis. next week and take some stills of my latest equipment in use.

Bill

Mmmm a router.. The only electrical hand tool besides a lathe I do not have.. I suppose your jig holds the router fixed against a vertical angle where you position the cylinder form and manually rotate it while the bit is spinning. Right?

That is an excellent aternative.

I wonder what can be done to "bore" without a lathe...

Mmmm....

Thanks for the idea Bill. Good luck with your RoboCam II.

AlMir

cstmwrks · 27th September 2007, 01:45

Quote: (Originally Posted by alfa011)

Mmmm a router.. The only electrical hand tool besides a lathe I do not have.. I suppose your jig holds the router fixed against a vertical angle where you position the cylinder form and manually rotate it while the bit is spinning. Right?

Thanks for the idea Bill. Good luck with your RoboCam II.

AlMir

Almost..

It's a router table, so I made a jig that fits up to the table guides. I used a hole saw to make the guide for what ever size round object I wanted to place an outside groove on or evenly turn down.

The fitting I had was too small but you get the idea. The round disk would fit up inside the fitting to be worked on. I'm not saying this is a safe way to get things done.. but it did work and kept me going.

Robocam II is nothing new. The first robocam was ( is ) a video camera platform. Adjustable depth, self propelled as needed and steerable. #II is just a depth/heading holding still camera that mindlessly fires away till you tell it to stop or the batteries die.
A product of too much solo diving.

Bill

**SeaBass** · 29th September 2007, 04:12

Bill,

Enjoyed the breakdown pics. As usual a nice piece of creative problem solving.

Looking forward to pictures of your lake dive.

--SB

19th September 2007, 03:24	#1 (permalink)
cstmwrks The old ways still work. Current Rebreather/s: Home Build Other Rebreather/s: Not Bought Yet Home Build Join Date: Sep 2006 Location: Boise Idaho Posts: 238	DSV and Bailouts for pendulem 02 rebreathers This is my low budget DSV Made from a PVC tee and delrin plastic bar stock. QD port removes for breathing surface air. Another version made to attach an OC 2ND stage for bailout. __________________ Why you ask... well it's not like I have anything better to do.
(Offline)

19th September 2007, 06:15	#2 (permalink)
SeaBass Thom Susko Current Rebreather/s: Megalodon Ray Home Build Other Rebreather/s: Not Bought Yet Ray Home Build Join Date: Jul 2006 Location: San Clemente, CA Posts: 246	Re: DSV and Bailouts for pendulem 02 rebreathers Really nice. Would love to see a tear down to see how you seal the inner cylinder. Sorry for the MIA. --SB
(Offline)

19th September 2007, 20:57	#3 (permalink)
cstmwrks The old ways still work. Current Rebreather/s: Home Build Other Rebreather/s: Not Bought Yet Home Build Join Date: Sep 2006 Location: Boise Idaho Posts: 238	Re: DSV and Bailouts for pendulem 02 rebreathers Hi SB, I'll have to see about opening them up and take some more images. Glad you have not dropped off the planet. Bill __________________ Why you ask... well it's not like I have anything better to do.
(Offline)

24th September 2007, 02:31	#4 (permalink)
alfa011 New Member Current Rebreather/s: Other CCR Home Build Other Rebreather/s: Other CCR Home Build Join Date: Apr 2007 Location: Puerto Rico Posts: 31	Re: DSV and Bailouts for pendulem 02 rebreathers Hi Bill! By all means take some images. Quite a few interested in your version of a pendulum DSV. AlMir Quote: (Originally Posted by cstmwrks) Hi SB, I'll have to see about opening them up and take some more images. Glad you have not dropped off the planet. Bill
(Offline)

25th September 2007, 19:55	#5 (permalink)
cstmwrks The old ways still work. Current Rebreather/s: Home Build Other Rebreather/s: Not Bought Yet Home Build Join Date: Sep 2006 Location: Boise Idaho Posts: 238	Re: DSV and Bailouts for pendulem 02 rebreathers Sorry for the delay.. Did not realize folks were that interested. Anyhow the valve is made from 7/8" Delrin plastic bar stock. All I did was machine two O ring grooves as you can see: I did not have a mill so I used a drill press to cut out the breathing path in the bar stock. Removed one side with a razor saw and dressed it out with a Dremel tool. The body is a plain old PVC TEE with a short chunk of PVC pipe that was turned down on a lathe to make the lip then heated and formed to the normal shape to accept a rubber mouth grip. The formed ports are heat welded to the main body and the inside is bored out to accept the delrin insert. The fit is close enough that I did not bother to O-ring seal the area around the breathing port. The two on either side do little more than offer a spring loaded retainer. The housing has two minor relief areas machined in the same spot the O-rings are mounted on the Delrin rod. So with some lube and a bit of force you can insert the rod into the body. When the O-rings pop into there relief spots it take a fair amount of force to remove it. Bill __________________ Why you ask... well it's not like I have anything better to do.
(Offline)

26th September 2007, 17:50	#6 (permalink)
alfa011 New Member Current Rebreather/s: Other CCR Home Build Other Rebreather/s: Other CCR Home Build Join Date: Apr 2007 Location: Puerto Rico Posts: 31	Re: DSV and Bailouts for pendulem 02 rebreathers Quote: (Originally Posted by cstmwrks) Sorry for the delay.. Did not realize folks were that interested. Bill Hi Bill.. Thank you for the idea. Will try it at home. Let's see how far I can go with my drill press and Dremel. By the way.. I have been trying to be without a lathe but it seems unavoidable. Best regards. AlMir
(Offline)

26th September 2007, 21:50	#7 (permalink)
cstmwrks The old ways still work. Current Rebreather/s: Home Build Other Rebreather/s: Not Bought Yet Home Build Join Date: Sep 2006 Location: Boise Idaho Posts: 238	Re: DSV and Bailouts for pendulem 02 rebreathers Hi AlMir, I gotta admit that with out a lathe lots of these little parts are pretty well out of the question. After my big move to Idaho I was reduced to a little 3" lathe. Great for the small stuff. Making a scrubber housing?? Forget it!.. At least not one with machined parts on it. I did make a jig for a router table to sort of fake some lathe work. I could make uniform grooves on the outside of various tubes and such. Having just finished ROBOCAM II I hope to take the long drive to a lake with 300 foot vis. next week and take some stills of my latest equipment in use. Bill __________________ Why you ask... well it's not like I have anything better to do.
(Offline)

26th September 2007, 22:50	#8 (permalink)
alfa011 New Member Current Rebreather/s: Other CCR Home Build Other Rebreather/s: Other CCR Home Build Join Date: Apr 2007 Location: Puerto Rico Posts: 31	Re: DSV and Bailouts for pendulem 02 rebreathers Quote: (Originally Posted by cstmwrks) Hi AlMir, I gotta admit that with out a lathe lots of these little parts are pretty well out of the question. After my big move to Idaho I was reduced to a little 3" lathe. Great for the small stuff. Making a scrubber housing?? Forget it!.. At least not one with machined parts on it. I did make a jig for a router table to sort of fake some lathe work. I could make uniform grooves on the outside of various tubes and such. Having just finished ROBOCAM II I hope to take the long drive to a lake with 300 foot vis. next week and take some stills of my latest equipment in use. Bill Mmmm a router.. The only electrical hand tool besides a lathe I do not have.. I suppose your jig holds the router fixed against a vertical angle where you position the cylinder form and manually rotate it while the bit is spinning. Right? That is an excellent aternative. I wonder what can be done to "bore" without a lathe... Mmmm.... Thanks for the idea Bill. Good luck with your RoboCam II. AlMir
(Offline)

27th September 2007, 01:45	#9 (permalink)
cstmwrks The old ways still work. Current Rebreather/s: Home Build Other Rebreather/s: Not Bought Yet Home Build Join Date: Sep 2006 Location: Boise Idaho Posts: 238	Re: DSV and Bailouts for pendulem 02 rebreathers Quote: (Originally Posted by alfa011) Mmmm a router.. The only electrical hand tool besides a lathe I do not have.. I suppose your jig holds the router fixed against a vertical angle where you position the cylinder form and manually rotate it while the bit is spinning. Right? Thanks for the idea Bill. Good luck with your RoboCam II. AlMir Almost.. It's a router table, so I made a jig that fits up to the table guides. I used a hole saw to make the guide for what ever size round object I wanted to place an outside groove on or evenly turn down. The fitting I had was too small but you get the idea. The round disk would fit up inside the fitting to be worked on. I'm not saying this is a safe way to get things done.. but it did work and kept me going. Robocam II is nothing new. The first robocam was ( is ) a video camera platform. Adjustable depth, self propelled as needed and steerable. #II is just a depth/heading holding still camera that mindlessly fires away till you tell it to stop or the batteries die. A product of too much solo diving. Bill __________________ Why you ask... well it's not like I have anything better to do.
(Offline)

29th September 2007, 04:12	#10 (permalink)
SeaBass Thom Susko Current Rebreather/s: Megalodon Ray Home Build Other Rebreather/s: Not Bought Yet Ray Home Build Join Date: Jul 2006 Location: San Clemente, CA Posts: 246	Re: DSV and Bailouts for pendulem 02 rebreathers Bill, Enjoyed the breakdown pics. As usual a nice piece of creative problem solving. Looking forward to pictures of your lake dive. --SB
(Offline)

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