Mailing List Archive Mailing List Archive
finally, the correct answer. trout gets the prize. if any of you have not seen one of these bad boys in action, you really should. the Extreme Exposure HID light makes a 50W BRL look like a candle - a little candle. it solves the problem that jeff disler has diving sumps by increasing burn time by ~3-4 times. what i cannot understand is that it seems to cut right through the bad water. we noticed this at wakulla two weekends ago. the vis was dropping on us, but the HID lights cut right through compared to the BRL 50W bulbs. barry miller has really trimmed down the ballast box to make this thing a dream. if you are in the market for a new light, this is the only way to go. if you already have a light, barry does upgrades. he will put in EO connectors, so you can carry your original light socket and bulb in your pocket. talk about redundancy. you can show up at the dive site and do 2, 3 or even 4 dives on one set of batteries. no more buying extra sets of batteries. no more worrying about damaging your pack by draining it down too low. this would be awesome for the wreck divers as you can take a tiny battery pack and still get all the light you need for the weekend. >From: Jess Armantrout <armantrout@mc*.co*> >To: Jeff Disler <pdisler@io*.ne*>, Tomsits <odyssey@at*.mi*.co*>, > cavers@cavers.com >Subject: RE: another stupid question..LOL >Date: Mon, 08 May 2000 11:44:18 -0500 > >The correct way to solve this is to go with the EE HID. It cuts through >shitty viz like a light sabre and increases your burn time to more than you >will need. > >Trout > > > > -----Original Message----- > > From: Jeff Disler [mailto:pdisler@io*.ne*] > > Sent: Tuesday, May 09, 2000 9:54 AM > > To: Tomsits; cavers@cavers.com > > Subject: Re: another stupid question..LOL > > > > > > Tom, > > > > I agree, if one is not mentally prepared for a silt out, they > > should not be > > cave diving. > > I suppose some people who were not totally prepared to negotiate > > passage in > > 0 vis might gain a since of comfort from the warm glow and primary would > > offer. > > > > But one also needs to understand that, > > all caves are not created equal. > > Some caves are in a near constant state of silt out or low vis and do >not > > warrant the use of a 50 watt or even a 35 watt primary. > > > > My choice of a 12-20 watt lamp is not advocating that it is right > > for caves > > with 20-50-100' of vis. But for low to no vis systems it is the > > right light > > for my purpose. I need the burn time over brightness, in low vis > > sumps a 50 > > watt bulb and huge cannister are not needed and in fact are >usless,(can't > > see in 0 to 10' of water any better with 50 watts than with 12 watts) so >I > > don't bring them. > > Referencing the cave in low vis means doing so with all the > > available means > > under these conditions. This can mean see what can be seen > > (pretty cave and > > all) as well as be felt (negotiate by feel). > > > > Obviously in clear water a high wattage lamp will give more available > > visual input, so as not to miss jumps, landmarks, and features in > > general. > > Not so obvious leads (going passage) often can not been seen ( 50 watts >or > > not) unless you crawl right up to them and check them. > > > > I'm sure no one would recommend the use of a 50 watt light with a > > cannister > > for low vis conditions (I might be wrong). That would be bringing > > something for the sake of bringing it. > > Groping the way forward is the most effective way to explore many caves > > (I've tried to think it through) because more often than not, > > > > Silt Happens > > Regards JD > > > > > > > > At 06:27 AM 05/08/2000 -0400, Tomsits wrote: > > >Jeff, > > > > > >First off, if anyone is not mentally prepared for a silt out then they > > >should not be cave diving. > > > > > >Second... Why advocate using improper gear. A 12 Watt primary light is > > >useless. You loose visual definition and clarity (The cave don't look >so > > >pretty and you can get lost:)). The ability to distinguish > > features may be > > >the difference between proper referencing and missing a jump. > > You would be > > >amazed at what you missed by using a 12W light. Use a 50W BRL > > bulb and see > > >the difference. > > > > > >Third... (Assuming your diving with proper gear) You are right. Never > > >turn off your primary during a dive. The chances of the bulb filament > > >breaking during cool down or start up is very high leaving you with the > > >need to exit the cave with no primary. This would turn a minor > > >inconvenience into a more stressful situation. > > > > > >Be cave divers and think these things through. That's the difference > > >between DIR and personal preference. - JT > > > > > > > > >At 12:52 AM 5/9/2000 -0500, Jeff Disler wrote: > > >>At 06:47 PM 05/07/2000 -0400, Mark Hanes wrote: > > >>>OK here goes.... > > >>> > > >>>If you are poking around in small silty restrictions and find >yourself > > >>>in a white out situation...would it be better to keep your > > eyes open or > > >>>closed from a psycological standpoint?? > > >>> > > >>>I always close my eyes as this doesnt let me know I cant see..and I > > >>>think helps me to concentrate on the line without the mental > > turmoil... > > >>> what do you think?? > > >> > > >>When I'm diving under these type conditions, I will usually > > just shut off > > >>my light and leave my eyes open. This assuming that one already > > knows the > > >>direction of travel and are on the line heading in their > > desired direction. > > >> > > >>Of course if the vis is not truely zereoed, then some navigational > > >>information could be missed by either closing your eyes or shutting >down > > >>the primary. > > >> > > >>Why have my light on when it not usable, I'd just might as well save >the > > >>battery power for when and if the conditions clear (I'll check > > from time to > > >>time) or beyond the sumps. > > >>I have heard many suggest that shutting down a primary light > > during a cave > > >>dive is not a wise thing to do. It is true that powering up a bulb is > > >>probably the most likely time to have a bulb failure. Perhaps the >higher > > >>wattage bulbs used by some have a greater chance of bulb failure >during > > >>start up. I however usually only dive with a 12 or 20 watt bulb and >have > > >>never had one blow during switching on. > > >> > > >>Regards JD > > >> > > >> > > >> > > >> > > >> > > >>"SILT HAPPENS"JD JEFF DISLER > > >> SAFE CAVING NSS 26000 > > >> > > > > > > > > > > > > "SILT HAPPENS"JD JEFF DISLER > > SAFE CAVING NSS 26000 > > > ________________________________________________________________________ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com
Navigate by Author:
[Previous]
[Next]
[Author Search Index]
Navigate by Subject:
[Previous]
[Next]
[Subject Search Index]
[Send Reply] [Send Message with New Topic]
[Search Selection] [Mailing List Home] [Home]