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I stand corrected. From: Matthias Voss <mat.voss@t-*.de*> > Don, > I would like very much to agree to your currency conversion, > unfortunetely it is the USD which is at the strong side of the equation. > So it is more like USD 235/ 375 for the suits. > regards > Matthias > > Don Burke schrieb: > > > > From: Matthias Voss <mat.voss@t-*.de*> > > > > > The price for one suit was 500,- DM, for the other 800,-DM , I believe. > > > > That's about $1050/$1680USD. Yikes! > > > > > > The pack connects to the suit, has a temperature control, and is > > available > > > > with several mounting options. > > > > How it does that without punching a hole in the drysuit or making a seal > > > > into a leak is a mystery to me. > > > > > > They do not a through connection to inside the suit ? > > > I have seen wireless transmission with charging devices, but in this > > > application I would chose to make a neat connection to the suit. > > > > The company says "no modification to the drysuit." > > They may use Voodoo and provide you with a bag of chicken bones for field > > use. > > I've seen SONAR systems that worked that way. :) > > > > The wireless charging I have seen is done by sending an AC magnetic field > > through the case. It isn't all that efficient, but one avoided case of > > flooding a housing can pay for quite a bit of power loss. > > > > I think I would go for a through-suit connection too. > > It would be much easier to manage in an entanglement. > > > > > > > There was also a suit who's designer claimed a capability of > > chemically > > > > > storing latent enrgy and rendering heat in the very moment the > > > > > temperature dropped below a trigger point. You may have seen this very > > > > > design with cars, where the cooling system serves to heat > > > > > natriumsomething crystals, which in turn give this energy back on > > > > > demand. > > > > > > > > If you could have a material with a melting point around 90 degrees and > > > > enough specific heat, you could wear a vest of the stuff under your > > drysuit > > > > and go the first part of the dive on sensible heat and the rest of the > > dive > > > > on the latent heat given off as the material solidifies. I know of no > > > > material with a high enough specific heat to do that. > > > > > > That was exactly how they said it would work. The crystals were said to > > > be "woven in " within the fabric. > > > > I would expect it to require quite a bit more mass than one could get into a > > fabric. > > Since I don't have one, I'll assume it didn't work out very well. :) > > > > > > The thing about this rig that got my attention was that the suits put no > > > > heat on the head, hands, or feet. The heating element is at the spine. > > > > > > May be there is good reason for this. If you feel the cold, your body > > > can react to it and economize. > > > The spine is susceptible to cold, without the need to feel it there, > > > _because_ you already feel it at your more exposed limbs. > > > People die in the water when temperatures at the upper spine ( > > > especially C1 to C ** drop below a certain level, which in turn affects > > > motion and breathing. > > > So heating the spine may be beneficial, and economic. > > > > Makes sense. My knowledge of physiology is pretty limited. > > > > > The company was Robin Hood Watersports ( ROHO)from UK. > > > > At those prices, they go to the bottom of my "to-do" list. :) > > > > Don > > > > Shop online without a credit card > > http://www.rocketcash.com > > RocketCash, a NetZero subsidiary > Shop online without a credit card http://www.rocketcash.com RocketCash, a NetZero subsidiary -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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