Suunto Vytec RGB50 vs RGB100

[flyguy]

Hi guys and girls. I'm almost convinced to purchase a Suunto Vytec as it's a wrist computer and its wireless AI. I currently own a Sherwood Wisdom but have recently dived with a Suunto Gekko rental so see how I liked the interface and a wrist computer opposed to a console.

I like the Wisdom interface a little better but could easily get used to the Gekko/Vytec. My main concern is that the Wisdom is much less conservative than the Vytec and I don't want have computer issues with what could still be considered as safe limits. I'm aware some may consider the Wisdom to be quite aggressive compared so other computers.

The Vytec has personal and altitude adjusters and the manual posts the NDL limits in the appendix with respect to the different settings. It however does not post figures as to the difference between its 2 algorithms, RGB100 (default) and RGB50.

I've done a lot of research on this so I'd like to keep the discussions to my question and not stray to far with those that have issues with wireless AI computers for other reasons.

My question is... does any one know how much more NDL time I can expect by chaing modes from RGB100 to RGB50?

Thanks a bunch

 

[StSomewhere]

If I understand it, the algorithm is the same. Where the RGBM factor comes into play is for fast ascents, multiday diving, reverse profiles, surface intervals that are too short, etc. So it takes the same algorithm and knocks down your NDL time to penalize for your mistakes. Other than multiday diving, the factors should not come into play if you are diving safe anyway.

Maybe someone else with greater understanding of this can shed more light on the subject?

 

[flyguy]

I just called Sunnto directly to ask them this very question and they referred me to Aqualung. I called Aqualung and spoke to a sales rep and then to a technician. The technician didn't know so he told me he'd have to call back.

He called back about 1/2 later and couldn't provide any numbers but said the difference was very slight.

I guess that answers my question but if anyone has any other info, please feel free to forward it. Thanks.

 

[StSomewhere]

I just called Sunnto directly to ask them this very question and they referred me to Aqualung. I called Aqualung and spoke to a sales rep and then to a technician. The technician didn't know so he told me he'd have to call back.

I almost talked about this exact experience in my previous post. This is the real downside to Suunto (and Apeks) stuff in the US. If you email the manufacturer, they refer you to Aqualung, and Aqualung doesn't have nearly the level of product experience that the manufacturers do.

 

[TeddyDiver]

The Vytec has personal and altitude adjusters and the manual posts the NDL limits in the appendix with respect to the different settings. It however does not post figures as to the difference between its 2 algorithms, RGB100 (default) and RGB50.I've done a lot of research on this so I'd like to keep the discussions to my question and not stray to far with those that have issues with wireless AI computers for other reasons.
My question is... does any one know how much more NDL time I can expect by chaing modes from RGB100 to RGB50?

Hey! I'm trying to get an answer for you from SUUNTO. I live in Finland so they don't redirect me to some wholesala agent's so lets wait a while if I succeed. Anyway, if get your hands on one in a shop for instance, try it in simulation mode and find out yourself. Newertheless any answer you get is valid only for that particular dive becouse: The Difference between RGBM's is the size of microbubles they allow in your vanes, and becouse of the comlex nitrogen calculations there's no % or * or + to measure the difference!

 

[sws]

The f-factors that the Suunto RGBM uses affect the m-values for the subsequent dives. The RGBM50 makes the correction "effect" 50% compared to the RGBM. For a single dive there is thus no difference between RGBM100 and 50, but for a dive series the RGBM50 will be less conservative for subsequent dives compared to RGBM100.

 

[flyguy]

Thanks Teddy & SWS. My LDS has a couple in stock and they'll let me play with it so maybe I'll try it in simulation mode to get a general difference. And as for what SWS mentioned about the m values, I suppose if I looked into micro bubble theory I'd be able to come to some general conclusions. I'm not a super math wiz but I do have a degree in physics so if that math isn't too bad I should be able to figure it out... (as long as there's no physiology in involved, hehe). Does anyone have some good links to micro bubble theory?