Suunto RGBM vs Buhlmann ZHL-C

[victorzamora]

Hi Victor, the DSAT algorithm is great for recreational dives, it is not optimal for deco dives. Many readers do not have the background to be able to interpret your statements

Good diving, Craig

That's part of the reason, but is not the whole story. The main reason I love it is due to being an engineer. DSAT is simply not based on a profile I like very much. It follows rules I disagree with and is less strict to a full algo than is the Pelagic Z+. The reason you claim it's "great" for rec dives is the longer NDLs....and I'm too conservative for that. Yes, it's more liberal....but that doesn't mean it's better.

 

[scubadada]

Hi Victor, so DSAT is not good for you and your beliefs, whereas it's fine for some of the rest of us. The choice of a decompression algorithm is a personal one. DSAT has been around for quite a while and there are many computers out there running it. If I really wanted to dive a liberal computer I would go back to diving my Cochran.

 

[victorzamora]

Hi Victor, so DSAT is not good for you and your beliefs, whereas it's fine for some of the rest of us. The choice of a decompression algorithm is a personal one. DSAT has been around for quite a while and there are many computers out there running it. If I really wanted to dive a liberal computer I would go back to diving my Cochran.

And if you read my post again, you'll see I never TOLD him to do anything......nor did I make any statements that one was inherently better. I said "I MUCH prefer it to the DSAT algorithm despite it being more conservative." That's right, I much prefer it. I said that if he had a Dual-Algo computer, he COULD switch to Z+ to see what Buhlmann was like. I never said one was absolutely better, just that I like one more and that he has the capability of trying an algorithm similar to the one being asked about.

 

[Slamfire]

If you want to learn about how buhlmann GF will behave, download the free mvplanner and play different scenarios with it. You can get it here: MV-Plan the Java Dive Planner

Divenav also has a computer simulator. I think many models use buhlmann gf. DiveNav - Products - eDiving

 

[tomfcrist]

It's hard to say much about what Sunnto's RGBM does, since it's proprietary. If you want to run a bubble model, you could buy a Shearwater and add VPM. A full implementation of RGBM is available for the Xeo too.

From the information that I have heard, the Xeo RGBM download tracks very nicely with the NAUI RGBM Deco Tables, which the Sunnto does not in my experience. Should make it a good option for those that want to dive a bubble model that wont bend the hell out of you.

It's funny because the one benefit a"bubble model" (VPM specifically) really has is in how it treats helium-rich mixes and associated deco on super long bottom times. What's extra funny is that some of the divers doing those dives are cautiously tending away from VPM due to being overly liberal and bending a bunch of people..

VPM has issues. Wienke(NAUI) RGBM doesn't, which is why I use that model. Far shorter deco obligations on the types of dives I'm doing. Relatively close deco times to VPM/Buhlmann on shallowish limited deco dives, but will still have shorter no deco times than VPM/Buhlmann. I wouldn't personally dive RGBM on a no deco dive....I just don't see the benefit.

 

[Remy B.]

About a week ago was my last dive, dive buddy had a Suunto Soop, I dive the Mares Punk Pro, we did the same dives depth, both computers made the safety stops with some seconds diference I belive about 40sec his been earlier than mine.

I will get a Suunto D4I novo as a christmas w since he is a Suunto distributor in europe and he get then very cheap, I honestly prefer more liberal DC, but I do love the looks of the D series, I still will dive with the two DC to compare and for redundancy, if I remember I will keep you informed if I do two dives in one day and see the difference between both

 

[victorzamora]

Well the Mares and the Suunto algorithms are very similar, so there shouldn't be a big difference. I'll bite my tongue on someone purposefully getting a Suunto.

 

[scubadada]

As far as I know, there is no evidence that any commercially available decompression algorithm is more or less risky with regard to DCI. I would welcome any data to the contrary. This covers the very liberal algorithm from Cochran to the conservative algorithm used by Suunto.

Good diving, Craig

My conclusion is that they are all "relatively" conservative vs. real

 

[tomfcrist]

As far as I know, there is no evidence that any commercially available decompression algorithm is more or less risky with regard to DCI. I would welcome any data to the contrary. This covers the very liberal algorithm from Cochran to the conservative algorithm used by Suunto.

Good diving, Craig

My conclusion is that they are all "relatively" conservative vs. real

As far as I am aware the NAUI RGBM tables and Bruce Weinke's algorithm has a 100% safety rating...meaning that there has not been a single reported case of DCS using it. This is of course discounting a few bits of software that had proprietary algorithms that were not in line with the real deal RGBM model.

 

[scubadada]

As far as I am aware the NAUI RGBM tables and Bruce Weinke's algorithm has a 100% safety rating...meaning that there has not been a single reported case of DCS using it. This is of course discounting a few bits of software that had proprietary algorithms that were not in line with the real deal RGBM model.

I was talking about conformational data, not impressions. I am interested in the reporting of DAN's PDE as an example.