Work of Breathing (Sherwood & Genesis regs)

[predfan]

I'm trying to find the work of breathing specs for Sherwood and Genesis regulators. I've been able to find this info for Oceanic, Zeagle, etc.

We are using Sherwood Magnums in my certification classes.

Any help is appreciated.

 

[Gene_Hobbs]

Sherwood Magnums

Evaluation of Sherwood Scuba Regulators for Use in Cold Water.
Clarke and Rainone, 1995
RRR ID: 4108

The closet I could find is the Sherwood Blizzard and the Sherwood Maximus. Any recent NEDU evaluations would still be controlled.

Note: I did not read for WoB measures.

 

[hamsiss]

www.scubadiving.com/article3623
And "regulator chart (PDF)" link on page explains WOB interval

 

[DA Aquamaster]

The older Sherwood second stages breathed better than the new ones and in some cases they breathed a lot better than you would have expected.

Don't get too hung up on a total work of breathing number. Some regs honestly deliever excellent performance as represented by that number while others acheive a very low number at the cost of very artifical feeling breathing.

 

[predfan]

Great links and advice. Thanks.

 

[Greg Barlow]

Don't get too hung up on a total work of breathing number. Some regs honestly deliever excellent performance as represented by that number while others acheive a very low number at the cost of very artifical feeling breathing.

One big positive about the EU standards are that they limited the positive pressure to a fairly low level. Regs that border on positive pressure spikes do offer "trap door" inhalation effort, and many divers find it uncomfortable.

Greg Barlow