Search results

Last I've seen from DOT on burst disks was hydro test pressure +/- 10%. Every AL 80 I've seen (3000 psi working pressure 5000 psi test pressure) has a 5000 psi burst disk in it. 4200 would be about right for a LP steel. You've gotten 3800 fills on AL 80's or on a LP steel? If on a low...

300 degrees is the not to exceed point for aluminum cylinders (6351 & 6061). Consequently no powercoating or heat cured painting. While tanks get hot in the sun, I would be surprised if they will reach 180. I did the math on the gas expansion and tanks in the hot trunk of a car reaching 130...

Have fun. PM any questions. Happy to help. Dave D

Here ya go. http://atlanticunderwater.com/equipment/fillwhip.shtml Dave D

KWS, If you will read the post that I started this thread with you will see the instructions and parts to lower the sensitivity by use of a 10 turn wirewound pot & a 25 turn trimmer pot (in place of the fixed resistor). Dave D

Ever since I started posting D-I-Y dive gear projects, divers who are D-I-Y Challenged , have asked if I would make some of these things for them and offered to pay me for my services. I regularly explain that while I'll help someone make something, I am not interested in producing dive gear as...

You will notice on that chart that there is not much of a swing in output over the range of temp and/or humidity. However, if you get the sensor it self chilled to the 15 degree level the output drops so much that you can't even "zero" the analyzer. Happened to us once 2 years ago. Had to warm...

Oh, I see. Sort of like the Mason Dixon line and "all of you" vs "you all". Dave D

Russia was TDY. He's based here in metro DC area with O-ring and me. In fact the 3 of us had lunch on Tuesday. Dave D

Doc Intrepid hails from up your way, doesn't he? Dave D

Do you say: F-B-I or Fat Boy's Institute N-C-I-S or Navy Can't Investigate **** N-S-A or No Such Agency I guess it is all a matter of perspective. The only folks I've met who don't spell it out are from the PNW. Of course I am sure many others will log on to prove me wrong! Dave D

I just taught my daughter to dive using a BP & 27# Halcyon wing with single tank. My son dives a 18# Halcyon & BP regularly in Puerto Rico with a single tank. I normally dive doubles but if I dove singles it would be with a BP & wing. DO NOT get too big a wing (doubles wing) and try to use...

I did the same using a piece of fiberglass channel I got from McMaster Carr. I sandwich the cambands between the backplate and the channel so there is no need to cut slots in the channel. Just two bolt holes. Took 10 minutes to make it. Dave D

Here ya go! http://home.earthlink.net/~toddclagett/NovaTech/knifesheath.htm Dave D

Opens at 8. I'll see ya when you get there. Dave

Tim James will be there as well. Should get there about 8 am or so. Dave D

The tank in question was an 80 cuft. The floaters were the 72 cuft al at a rated pressure of 2475. I have 2 of them. I no longer use them but did until 3 years ago. Nothing wrong with buying used tanks provided the price is right and you buy the right thing. That means being informed about...

I will be over at Beach 1 at Millbrook tomorrow between 8 & 9 tomorrow with Tim James & Jim (LNF). Red Pathfinder MD tags. Dave D

I dive Mt Storm regularly especially in the winter when it's warm water allows us to extend our season. August issue of Dive Training Magazine has a nice article in it on Mt Storm. I especially like it because it features my picture doing surface support for a winter dive we did up there in...

Something you may not realize is that different sensors put out different levels of voltage. If yours is set up for one that puts out 10 mv and you put in one that puts out 14 mv you will have to pull or change one of the fixed resistors to get it in range. This is why I like the trimmer pot...