online SAC / RMV Calculator and Rock Bottom Calculator

[spatman]

So can I take the cubic ft per minute calculation and multiply it by the CF of a different bottle and come up with a theoretical air time for that bottle? In other words if I have .75 cf/min consumption rate and have a 13cf bail-out bottle I would theoretically have 9.75 minutes of air to beat cheeks for topside?

i don't have too much time to go into detail, but:

the RMV the equation spits out is your consumption rate at the surface, 1ATA. at depth your consumption is multiplied by the pressure affecting you. your .75cf/min at the surface becomes 3 cf/min at 99ft (4 ATA).

here's a good article expanding on that and other aspects of whatevah's favorite subject, Gas Management:
http://nwgratefuldiver.com/articles/gas.html

[Geek]

What's gas management?

[Blaiz]

What's gas management?

it's when you take a spare air to 128 feet to save your ass should aught go wrong~

[spatman]

What's gas management?

it's when you take a spare air to 128 feet to save your ass should aught go wrong~

and along that line of thinking, i now present:

the online Rock Bottom Calculator

like the RMV calculator, it's still in a rough state in terms of the layout/design since it's formatted for mobile devices for now, but i'd appreciate any feedback on the text and calculator itself.

thanks!

http://divenerd.com/rockbot/

[LCF]

LOVE THIS! Not only the number, but an explanation of where it came from and what it means. Matt, would you mind if I put a link to these resources on ScubaBoard, as well?

[spatman]

LOVE THIS! Not only the number, but an explanation of where it came from and what it means. Matt, would you mind if I put a link to these resources on ScubaBoard, as well?

please do, lynne, with the caveat that it is still a work in progress.

[mancub]

Very cool!

Looks great on the iphone safari browser. Gives me something fun to play with when checking email and the latest weather forecast gets old!

Thanks for putting this very workable little tool together. Although my dive buddies smirked when I showed them the gap of our individual cf/min . I guess being a skinny distance runner helps.

Jacob

[spatman]

if anyone knows how to do these calculations in metric, i could use a little help...

[spatman]

the SAC rate and RB calculators are now officially launched as v1.0:

http://divenerd.com/

any feedback on display errors or mathematical mistakes is always appreciated.

thanks!

[cardiver]

Very nice! Now if it was only an Android app......

[spatman]

one step at a time, ron.

[airsix]

The calculators render beautifully in the Android browser.

The bad news is Ricky Redondo requires flash, so we're out of luck there.

[spatman]

The calculators render beautifully in the Android browser.

The bad news is Ricky Redondo requires flash, so we're out of luck there.

yeah, ricky's slated for a javascript update soon...

[ktb]

Other than not having Flash, things like great on the iPad.

[spatman]

Ricky is now updated to no longer require flash:

http://divenerd.com/rr/

let me know what you guys think!

[airsix]

Ricky is working great on Android.

[Norris]

Ricky is now updated to no longer require flash:

http://divenerd.com/rr/

let me know what you guys think!

That is such an awesome strip man. Very well done and super creative.

[kat]

ricky gets a linux based seal of approval as well!
the calculator is perfect too!

[RizzaLyN]

the calculator is very impressive..

nice nice creation..

[Pez7378]

the calculator is very impressive..

nice nice creation..

Spatty! is that you?

[spatman]

thanks, everyone! glad you like it.

yep, pez, that's me.

[babs13]

Spats!! this looks cool. i was thinking of something like this. simple.

[spatman]

glad you like it, babs!