picking out my bungied second - thoughts? - SP intensive....

[rhwestfall]

Deciding to set up some gear utilizing a long hose primary and a bungied second. I dive cold water (Great Lakes), but not ice. My 1st stage is a SP MK-17, and my primary is a G-250v going on the long hose. To go with that, I am thinking about a S555 as a bungied second. Any thoughts of this reg in this application?

Other choices in my collection: G200B, G250v, 109, maybe a 156.......

Yes, another G250v is possible, but the smaller size of the S555 appeals to me if this reg deals with the potential for 36 degree water (I know the MK-17 will)... The G200B is the same size as the G250V, without the adjustmant or a metal barrel.... and the 109/156 are possible, but again are larger and theoretically "heavy".....

The 200B might end up on my pony coupled with a MK-2+ (or the S555 if you talk me out of the thoughts above). Then again, the 156 might go on the pony as it is indestructable.....

Decisions, decisions, decisions.....

Any thoughts?

[awap]

All of my alternates are 109s. I like the user adjustment so I can detune it until it is in my mouth. You will not notice the size or weight on the bungee. I use a G500 or R295 on my pony. There the size does matter.

[fdog]

For the sake of parts commonality, my long hose and necklace are identical. This has never caused a problem for me.


All the best, James

[James R]

For the sake of parts commonality, my long hose and necklace are identical. This has never caused a problem for me.

Same here. Only difference is a seacure molded mouthpiece on my primary and a stock/oem on the necklace.

I would want a balanced 2nd as my backup. YMMV.

[Peter_C]

I too would say have both secondaries identical. It is also nice having a reg that can be detuned until needed.

[Fishpie]

If you go the 200b route (my choice) I'd use that as my primary and the 250 as the back-up.

[rhwestfall]

Same here. Only difference is a seacure molded mouthpiece on my primary and a stock/oem on the necklace.

I would want a balanced 2nd as my backup. YMMV.

S555 is balanced, G200B is balanced, 156 is balanced, (as would another g250v) but - if the 1st is balanced (MK-17), there is no need to balance the second, no???????? The pony - would preferrably be a balanced second as the MK-2+ is not balanced.....

[rhwestfall]

I too would say have both secondaries identical. It is also nice having a reg that can be detuned until needed.

As for "detuning" - If I remember correctly, the S555, the G200B, and the G250V have the pre-dive/dive switch..... the 109 (as well as the G250v) is user adjustable....

[rhwestfall]

maybe my question should have been: Is the S555 (or G200B) a good cold water (non-ice) reg?

[awap]

As for "detuning" - If I remember correctly, the S555, the G200B, and the G250V have the pre-dive/dive switch..... the 109 (as well as the G250v) is user adjustable....

The pre-dive/dive switch on all those 2nds will reduce the strength of a free flow (venturi effect) but will not reduce the tendency of a well tuned reg to bubble a bit in some condition. The user adjustment increases cracking pressure and will prevent free flows from starting.