Steel Chassis for PRISM

Bubble Boy

Has anybody out there done any experiments with enclosing the PRISM scrubber in a Stainless steel chassis ( something like an Inspiration Jan Box ).

I have a couple of ideas I'm toying with and this might well be a quick and effective answer.

Any information on the matter would be greatly appreciated.

dive2dive2000

Here is a link that may be of some help. http://www.greywolfinnovations.com/prod_bpcovsys.htm

He started out with a SS rig and now has modified it.

Here are some more sites that might help you.

http://www.techdivetools.com/rebreat...spiration.html

https://tech-blue.com/secure.html

They advertise as an inspo cage but can be modified for a PRISM. I have a Grey Wolf short plate with an ABS cover. I find it to be more than enough protection, anything more is just to heavy IMHO. Good luck and please post your outcome.

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Safe Diving,
Martin

caveseeker7

Here another picture of Ron's old frame on SMI's website



It's quite compact, I looked at it last year when it was collecting dust at SMI.
Doesn't offer all that much protection. Could easily be fixed, though.

Am not sure, but I believe Jon had a metal case made for his back in the day.

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Stefan



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You can also see Ron's old frame in the gallery section under Intro to rebreathers. At the time it was the slickest frame going for Prism.

Bubble Boy

Thanks for the heads up guys.

I was actually thinking of something more like a Jan box to strengthen the lid, head and scrubber and to allow for the carrying of 7 ltr cylinders. The space below would be used for carrying either bail out O2 or a second scrubber.

As opposed to actually refiining the back plate or caging in the scrubber with the standard 3 ltrs.

Thoughts and feedback please

decoweenie

Is the scrubber dimension similar to the Inspiration's ?

If yes, you could simply use the Travel-Frame (thread in Insp forum).

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dive2dive2000

Anything is possible, Assuming you want 7 ltr to incorporate bailout. If not and you still have to sling a bottle not sure why you would dive that way. I like a sidemount sling for stage/bail out tanks. They lie away from your front and CL. In my personal experience I always find it necessary to try a couple of different ways and choose a style that makes sense to me. With that said, I have never reinvented the wheel and always end up diving a known and proven way, but always spend a bunch of time and money experimenting.

What ever you end up doing Armadillo makes a nice little setup to sling bail out. I dive with OC and CCR divers who incorporate it into there kits. I love it and adapted to it immediately, sorry I was not shown this style when I first started diving doubles

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Safe Diving,
Martin

Chris

Hi Martin
Have you got any pics of how you have slung your bottles ?
I am still playing "Make The Harness" at the moment using the PRISM Counterlungs as the shoulders of the harness, thinking of stitching a Dring to around the middle of the CL.

Tried doing it with a harness under the CL and using a side D from Cool Hardware but it just felt yuck and I found I was getting a tops bruise on my shoulder from the DRing.

Cheers
Chris

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Mike

Hey Chris
I origionally set mine up so that the counterlungs clipped onto a male buckle in place of the origional shoulder harness. Doesn't really work, pushed the lungs too far to the side which in turn raises them up onto your shoulders.

I've now redone it exactly like you had it using tobins counterlung attachments on the waist strap and the UCL plates - and when setting it up I did notice that the plates dig into my shoulders. Will dive it this weekend in a 7mm and see if it is annoying.

Did also play with not using shoulderstraps at all, rather just using the counterlungs connecting to the waist strap - seemed to be too lose and left me feeling like I might have just as well used the stock harness.

I suspect that the best solution will end up being sidemounts - seems JDZ might know what he's doing afterall...

Mike

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Bubble Boy

Sadly not Phi. The Head has the wings which are wider and the scrubber, being radial is definately bigger.