Going from a 80cu to 100cu tank

[tneal15]

I have been diving for about a year and have 25 plus dives and my AOW. I want to go do some diving down in Pensacola next week and the dive shop has 100cu steel for rent. besides having to adjust my weight a little will the 100cu tank dive differently then the 80cu I have been used to?




Troy

 

[Dhboner]

When I switched from twin AL80's to twin HP100's (steel) I immediately dropped ALL the weight I was previously using! The other main difference is that they remain negative even when empty. My Worthington HP100's are a fair bit shorter than AL80's and trim out great in sidemount.

 

[WarrenZ]

do a weight check and watch your dive time those extra 20 cf can get you closer to the NDLs.

 

[tneal15]

Ok thanks, I have been diving enough locally I am considering buy my own tank. Do you ever bring SpareAir with you?

 

[claymore]

Pony yes when doing deeper dives. SpareAir never. You know what they say about screen doors on submarines and *its on boar hogs.
I met a diver once who filled his SpareAir from his regular tank. Kind of like siphoning gas out of your car gas tank into a 1/2 gallon can in case you run out of gas in the middle of nowhere.

 

[redacted]

Pony yes when doing deeper dives. SpareAir never. You know what they say about screen doors on submarines and *its on boar hogs.
I met a diver once who filled his SpareAir from his regular tank. Kind of like siphoning gas out of your car gas tank into a 1/2 gallon can in case you run out of gas in the middle of nowhere.

Spare Air is better than no air unless it catalyzes stupid. It will not allow a diver to make a normal ascent as a properly sized pony will, but it beats trying to suck one more breath out of a donkey's a$$.

Think of it like a J-valve or the reserve lever on an old VW. They have come in handy for me a few times.

 

[mikeb21072]

I thought it was much easier to dial in your buoyancy when I used the steel's over the AL80's. I was diving steel 100's, and I prefer them over the aluminum any day. It helps with the safety stop if you were a little light for the dive, since that tank is still negative at the end.
Enjoy your dives.

 

[diver 85]

Drop some weight--??4-5 lbs??---(check it out 1st---of course) & enjoy the ride, I mean dives........You'll LOVE it.(probably----)......

 

[CT-Rich]

I have a steel 100 (3000psi flavor). Love it.

 

[Steve_C]

I am 5'7. Steel HP100s fit me better than the longer AL80s.