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SCUBA-L  July 2001, Week 2

SCUBA-L July 2001, Week 2

Subject:

Descent ERates & Timex Watches

From:

"Marv Gozum @ Wills Eye Hosp" <[log in to unmask]>

Reply-To:

Scuba diving discussion list <[log in to unmask]>

Date:

Thu, 12 Jul 2001 10:57:39 -0400

Content-Type:

text/plain

Parts/Attachments:

Parts/Attachments

text/plain (54 lines)

What kind of problems, K?  Ears or otherwise?  Since you've been bombing
wrecks now and then I'd be interested .... freedivers tend to descend very
rapidly with little trouble other than equalizing.  If there are dissolved
gas effects I'd like anyone's thoughts on it.

I saw your post on techdiver about dive watches, but will answer here
instead, too noisy and dirty over there.

I've used a Timex Expedition as a backup also rated to 100M, its survived
quite well and got it at Walmart for $12 ... but concur with Paul about the
Velcro strap, it seems less reliable when open after its wet.

I've a solar dive watch with a depth gauge, and there is a basic model for
$170. http://www.princetonwatches.com/shop/AP0440-06H.asp

It charges in fluorescent light and sealed so it keeps certification for
over 5 years, and past owners tell me its ok for life until someone opens
it.  It has fewer moving parts unlike mechanical watches, and thus are more
reliable.  Solar watches were once prolific in the 1970s, but methinks
attempts to sell more watch batteries nixed production, as they are quite
trouble free.

I've concerns about changing batteries in dive watches.  While o rings and
battery are cheap, recertified for depth adds $30 to the service cost.  If
service is not top notch, and you can cut corners, Murphy would have
batteries fail or watches flood at the wrong time.  The popular Seiko
Hyperaqualand requires a $75 factory service ideally, but I've seen others
get service at a jeweler for $20, sans depth certification ... could be
tricky for a $300 watch!




At 12:00 AM 7/12/2001 -0400, Automatic digest processor wrote:
>----------------------------------------------------------------------
>
>Date:    Wed, 11 Jul 2001 06:29:18 EDT
>Subject: Descent ERates
>
>Good question.  And I have noticed that when I do a fast descent, I have soem
>problems
>
>However, that particualar day, I dove down slowly.  Hand over hand.  Paused
>at about 50 ft to adjust bouyancy, and again at 100 ft.  As well as my stop
>at 140, before swimming to the wreck.




Warm regards,


Marv

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