Delrin Megalodon

**Simon TW** · 2nd November 2006, 09:22

So if Delrin is not going to make it lighter and could affect the condensing and it costs big bucks.

Is Titanium going to be the prefered aternative to the ally canister?

***Decodiver*** · 2nd November 2006, 09:50

Quote: (Originally Posted by Simon TW)

So if Delrin is not going to make it lighter and could affect the condensing and it costs big bucks.

Is Titanium going to be the prefered aternative to the ally canister?

Let's hope not as Titanium and O2 go bang!!!!!!

Cheers mate,

Dave.

**Simon TW** · 2nd November 2006, 17:55

Quote: (Originally Posted by Decodiver)

Let's hope not as Titanium and O2 go bang!!!!!!

Cheers mate,

Dave.

ohh I wouldn't want that to happen Dave. The can on the inspiration is a plastic and it's nice and light compared to the Meg. There must be somthing suitable.

Am I the only one who wants a light travel unit?

Marc T · 2nd November 2006, 18:23

Quote: (Originally Posted by Simon TW)

ohh I wouldn't want that to happen Dave. The can on the inspiration is a plastic and it's nice and light compared to the Meg. There must be somthing suitable.

Am I the only one who wants a light travel unit?

An other problem youll get when running after a light canister is to protect it and the need of a frame to hold the tanks ( or a yellow box to hold the whole things together

), you loose from one hand what you get in the over.

Sorry thats dont help

But obviously there is a real need for a "special travel" Rebreather

Cheers

Marc

michael hearn · 2nd November 2006, 19:24

Quote: (Originally Posted by Decodiver)

Let's hope not as Titanium and O2 go bang!!!!!!

Cheers mate,

Dave.

decodiver is correct ti and ox are not a match, and in any case its quite a bit heavier than alu, not sure there would be a lot of weight saving in any material.

RonMicjan · 3rd November 2006, 04:47

Cliff Clavin says... its a little known fact that...

Ti is 1.6 times heavier than aluminum, but would not need to be near as thick to do the same job, so in essence most likely end up being lighter. However, a serious drop on a corner would be an expensive mistake. Ti is about an order of magnitude more expensive than aluminum by weight. (current metals pricing, results may vary)

to lighten up your meg, get a mini first, then have a serious machine shop turn down the bottom 2/3rd of the housing to about half thickness, then reanodize, forget the fancy tank mounting systems, go with a plastic backplate and aluminum 2 liter cylinders with the new Zeagle or H2Odyssey combined valve/regulator combo and you should come in around 35-40lbs/18 kilos. I have had the Superlight Mini Meg on the drawing board for some time.

BTW, there is no delrin in the MEG, delrin (a monopolymer acetal) tends to have problems with perosity when formed, ISC uses only Copolymer Acetal in its machined parts.

ISC once has a supplier send delrin mistakenly (cant tell them apart by looking) instead of our usual copolymer and a bunch of ADV's were made that leaked right through the face of the unit during testing, no, not around threads, or some such, right THROUGH the face of the part. this is not good...ask Darlene (scubavixen) about her frustrations with delrin for her handset design. It wasnt the orings : )

Skipbreather · 3rd November 2006, 05:49

Quote: (Originally Posted by RonMicjan)

Cliff Clavin says... its a little known fact that...

I have had the Superlight Mini Meg on the drawing board for some time.

And I had the ULTRA light MicroMeg w/ the ULTRA light carbon backplate, in the water for a 4 ½ hour pool test today. The one w/ the light weight aluminum can and the short radial scrubber that holds 15% more ‘sorb than the Mini but is 1 ½ inches shorter overall….. Ask me about it @ DEMA.

Best,
Ken

decoweenie · 3rd November 2006, 06:07

Quote: (Originally Posted by Skipbreather)

And I had the ULTRA light MicroMeg w/ the ULTRA light carbon backplate...

Come on Ken, stop the teasing and post some pics for those of us who won't be at DEMA...

nmanfield · 3rd November 2006, 09:48

Quote: (Originally Posted by Simon TW)

ohh I wouldn't want that to happen Dave. The can on the inspiration is a plastic and it's nice and light compared to the Meg. There must be somthing suitable.

Am I the only one who wants a light travel unit?

What about carbon fibre? Or a mix of carbon fibre and aluminium like there is on certain cylinders?

2nd November 2006, 09:22	#11 (permalink)
Simon TW Martini Diver Current Rebreather/s: Inspiration Classic Inspiration Vision Evolution Megalodon Other Rebreather/s: Join Date: May 2005 Location: Hurghada (Egypt) and Lancaster (England) Posts: 167	alternative So if Delrin is not going to make it lighter and could affect the condensing and it costs big bucks. Is Titanium going to be the prefered aternative to the ally canister?
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2nd November 2006, 09:50	#12 (permalink)
*Decodiver* Administrator Current Rebreather/s: Other CCR Other Rebreather/s: Other CCR Join Date: Jan 2005 Location: Geneva Posts: 2,194	Re: alternative Quote: (Originally Posted by Simon TW) So if Delrin is not going to make it lighter and could affect the condensing and it costs big bucks. Is Titanium going to be the prefered aternative to the ally canister? Let's hope not as Titanium and O2 go bang!!!!!! Cheers mate, Dave. __________________ CCR/OC Trimix Instructor Trainer CCR Training to Mixed Gas in Switzerland, France, UK & Germany on Megalodon/COPIS-Megalodon/KISS/Sport KISS/Ouroboros/rEvo/Inspiration/Evolution/Sentinel www.zerogravitydiving.com Rebreather World Terms & Conditions
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2nd November 2006, 17:55	#13 (permalink)
Simon TW Martini Diver Current Rebreather/s: Inspiration Classic Inspiration Vision Evolution Megalodon Other Rebreather/s: Join Date: May 2005 Location: Hurghada (Egypt) and Lancaster (England) Posts: 167	Re: alternative Quote: (Originally Posted by Decodiver) Let's hope not as Titanium and O2 go bang!!!!!! Cheers mate, Dave. ohh I wouldn't want that to happen Dave. The can on the inspiration is a plastic and it's nice and light compared to the Meg. There must be somthing suitable. Am I the only one who wants a light travel unit?
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2nd November 2006, 18:23	#14 (permalink)
Marc T hell is in the details Current Rebreather/s: RB80 / Clone Home Build Other Rebreather/s: Not Bought Yet RB80 / Clone Home Build Join Date: Sep 2005 Location: FRANCE Carcassonne Posts: 498	Re: alternative Quote: (Originally Posted by Simon TW) ohh I wouldn't want that to happen Dave. The can on the inspiration is a plastic and it's nice and light compared to the Meg. There must be somthing suitable. Am I the only one who wants a light travel unit? An other problem youll get when running after a light canister is to protect it and the need of a frame to hold the tanks ( or a yellow box to hold the whole things together ), you loose from one hand what you get in the over. Sorry thats dont help But obviously there is a real need for a "special travel" Rebreather Cheers Marc
(Online)

2nd November 2006, 19:24	#15 (permalink)
michael hearn RBW Member Current Rebreather/s: Inspiration Classic Other Rebreather/s: Join Date: Apr 2006 Location: belgium Posts: 118	Re: alternative Quote: (Originally Posted by Decodiver) Let's hope not as Titanium and O2 go bang!!!!!! Cheers mate, Dave. decodiver is correct ti and ox are not a match, and in any case its quite a bit heavier than alu, not sure there would be a lot of weight saving in any material.
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3rd November 2006, 04:47	#16 (permalink)
RonMicjan Cap Ron scourge of the NW Current Rebreather/s: Megalodon Dolphin Home Build Other Rebreather/s: Sport Kiss Classic Kiss Dolphin Home Build Join Date: Feb 2005 Location: Cape Disapointment, The Graveyard of the Pacific Posts: 1,120	Re: Delrin Megalodon Cliff Clavin says... its a little known fact that... Ti is 1.6 times heavier than aluminum, but would not need to be near as thick to do the same job, so in essence most likely end up being lighter. However, a serious drop on a corner would be an expensive mistake. Ti is about an order of magnitude more expensive than aluminum by weight. (current metals pricing, results may vary) to lighten up your meg, get a mini first, then have a serious machine shop turn down the bottom 2/3rd of the housing to about half thickness, then reanodize, forget the fancy tank mounting systems, go with a plastic backplate and aluminum 2 liter cylinders with the new Zeagle or H2Odyssey combined valve/regulator combo and you should come in around 35-40lbs/18 kilos. I have had the Superlight Mini Meg on the drawing board for some time. BTW, there is no delrin in the MEG, delrin (a monopolymer acetal) tends to have problems with perosity when formed, ISC uses only Copolymer Acetal in its machined parts. ISC once has a supplier send delrin mistakenly (cant tell them apart by looking) instead of our usual copolymer and a bunch of ADV's were made that leaked right through the face of the unit during testing, no, not around threads, or some such, right THROUGH the face of the part. this is not good...ask Darlene (scubavixen) about her frustrations with delrin for her handset design. It wasnt the orings : ) __________________ Marine rescue, towing and salvage. Interfering with natural selection since 1983. www.tmishop.com Diving bits etc. www.seatowpdx.com The Summer Job
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3rd November 2006, 06:07	#18 (permalink)
decoweenie Crash Test Dummy Current Rebreather/s: Other CCR Other Rebreather/s: Other CCR Join Date: Feb 2005 Location: Cairo Posts: 5,487	Re: Delrin Megalodon Quote: (Originally Posted by Skipbreather) And I had the ULTRA light MicroMeg w/ the ULTRA light carbon backplate... Come on Ken, stop the teasing and post some pics for those of us who won't be at DEMA... __________________ "...after a while you get bored offering advice to a bull that like to keep butting the fence with its head rather than walking through the open gate..." - Rebreather World PM
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3rd November 2006, 09:48	#19 (permalink)
nmanfield Megalegalegalegadingdong! Current Rebreather/s: Megalodon Other Rebreather/s: Join Date: May 2005 Location: Odessa, Ukraine Posts: 329	Re: alternative Quote: (Originally Posted by Simon TW) ohh I wouldn't want that to happen Dave. The can on the inspiration is a plastic and it's nice and light compared to the Meg. There must be somthing suitable. Am I the only one who wants a light travel unit? What about carbon fibre? Or a mix of carbon fibre and aluminium like there is on certain cylinders? __________________ Tub 'O Lard
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