Diving with a 116cu. ft. steel tank with 30lb. lift BP/W, need larger wing?

[BORG]

Hi guys,
I have a 116cu. ft. steel LP tank and was interested in trying it out on my Dive Gear Express 30lb. lift BP/W, anyone diving this setup and how is it working for you? Will be diving a full 7mm wetsuit in a local freshwater lake. I'm thinking this wing may not give enough lift with this big 116cu. ft. steel tank and may have to switch to my 45 lb. lift Zeagle Ranger back inflation BCD or maybe get bigger wing, maybe 40-60lb. lift when diving with this BP/W? Any user reviews will be helpful. Thanks!

 

[kdlv]

That's a HP117 Faber = 15l right? You'll be perfecly fine with 30lb BPW if weighted properly.

 

[BORG]

No, believe it or not, it's a 116 cu. ft. LP Faber. Stamped LP service pressure rating on the tank I bought it brand new back in 1999 from Divers Supply here in Atlanta area.
Thanks for info. and advice.

 

[johndiver999]

In reality, the lift requirements are based on the suit compression you expect and also the weight of the gas in your tank, plus any additional excess lift capacity you desire for emergencies or for helping a buddy.

If you dove that BC with the same suit and a smaller tank previously, the change in lift requirements should be negligible, assuming you have your weighting correct.

 

[inquis]

116 cuft of air weighs 9.3 lbs. Compression loss for my 7mm, XXL, single-layer wetsuit would be about 9 lbs at 100 ft, so 18 lbs negatively buoyant worst case if properly weighted. A 30 lb wing is plenty for single-tank, recreational diving.

 

[BORG]

116 cuft of air weighs 9.3 lbs. Compression loss for my 7mm, XXL, single-layer wetsuit would be about 9 lbs at 100 ft, so 18 lbs negatively buoyant worst case if properly weighted. A 30 lb wing is plenty for single-tank, recreational diving.

Thanks for the insight into this. I'll dive it in a few days and find out how it performs.

 

[BORG]

In reality, the lift requirements are based on the suit compression you expect and also the weight of the gas in your tank, plus any additional excess lift capacity you desire for emergencies or for helping a buddy.

If you dove that BC with the same suit and a smaller tank previously, the change in lift requirements should be negligible, assuming you have your weighting correct.

Thanks for the info. I'll try it out in a few days and see how it does on a dive.