VR3 no stop times

[Adrian Kelland]

Originally Posted by GLOC

I don't use a computer, only a depth gauge, but what does VR3 - 0, and DS 100rgbm equate to in normal gradient factors?

I know that Mark Chase has had experience of pretty much dive computer out there (finally made his mind up on something now!) so might be worth dropping him a line! Otherwise maybe someone else can help.

Until the next one comes along

[wagger]

I got no problem with deco, is indeed one of the factors that convinced me to go for the vr3, that and the ccr option. The no stop time is an observation more than anything else. The vr3 is the only computer you will ever need, not the only computer you will ever need only if you are planning deco. My angle is this: is my vr3 suitable for all levels of diving, so i can sell my vytec, or do i keep my vytec for no stop dives with all levels of diver?

[Steve Jones]

Originally Posted by GLOC

I don't use a computer, only a depth gauge, but what does VR3 - 0, and DS 100rgbm eqaute to in normal gradient factors?

If you set the VR3 to 0 conservatism you won't be too far from a 20/80 GF profile, you will maybe slightly deeper on first stop.

Steve

[onthetrain]

Originally Posted by wagger

Used my new vr3 for the first time yesterday, (am going ccr so thought id splash out!), used it as oc nitrox 32, at the same time i wore my vytec ds. The no stop time on the vr3 was at least 10 minuites less than the vytec which i found suprising! I know it runs on different tables to the vytec but so do a lot of other computers and they are almost on par with each other. Is it down to the deep stops that the vr3 puts in, or am i being a right muppet and missing something plainly obvious

Paul

Paul, no your not being a muppet and your not really missing the obvious.

What you are doing is comparing an apple with a banana.

On your Suunto your no stop time is important. The VR3 doesnt work the same way. Its a deco computer so thats what its looking at. On no stop times it looks conservative until you add additional gases etc. Thats when you will see the benefit.

On the VR3 the important thing is the tts readout or Time to Surface. This factors in your deep stops, deco stops etc. If you stuck to no or minimum deco on your dive you will probably have found that the VR3 will allow you to go straight to the surface whilst the Suunto is demanding a safety stop.

Your doing a sensible thing comparing the two to see how they work. I jumped straight in on a 45M dive with mine a couple of days after I bought it. It scared the life out of me as I didnt really know what it was showing me and a deepish dive with a load of deco to do is not the best time to work it out.!!

Now thats mupperty of the highest order.

[Steve Jones]

Originally Posted by wagger

got the vr3 on 0 setting, no other gasses switched on, ds on rgbm100, both on the same mix, just looking for a bit of straight info.

Let's try and give you some constructive info.

Assume zero conservatism on your VR3:

You will find that the VR3 goes into deco before the Suunto. However the VR3 doesn't then rack up an enormous amount of deco stops, but will give you deep stops. Whereas the Suunto will take some time to go into deco but then will penalise you heavily if you stay at your bottom depth and doesn't give you you a deco stop profile, but instead gives you your ceiling.

Hope some of this makes sense. PM me if you need more info.

Steve

[wagger]

Thanks for that sensible reply! I did get the vytec for the gas switching it gives, but never was that happy with it. Just with going from oc to ccr I am looking at clearing out a lot of the kit I seem to have ended up with. Just going to keep a basic set of oc gear for club teaching with. Twinset and wings up for sale soonest!

[wagger]

Makes perfect sense, cheers Steve. I do plan on diving all levels with the vr3, (at that price I am showering in it). Ill run both the vytec and vr3 side by side for a while on no stop and multiple gas deco dives to see the difference.

[jptaylor9]

Just to clarify my earlier remarks, nothing wrong doing no-stop dives on VR3, I've done it myself. On my VR3 when it had v2 software installed, there wasn't a no-stop option on the menu, it just gave the no stop on the dive (-ve number). The no-stop menu appeared on a v3 upgrade when I had a screen replaced, i always felt it wasn't necessary. Bit like the altitude screen

[steveharriss]

You'll find that your Vytec goes into gauge mode if you set it then it lets you run as a backup for the VR3. Trust the VR3 and tables and you won't go too far wrong

[gobfish1]

run the Vytec on 50rgbm not 100rgbm and see how you go,