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Adam, I see from your 'handle' that you're a deep wreck diver. OK. You are on a deep wreck, say 250fsw. The visibility isn't great, there's a bit of current and you're working hard. It's also a leetle chilly so you're wearing your gloves - dry gloves or heavy wet gloves. Say you're ascending the line and you look at your tables to check your run-time 'cause you want to push it out a little bit, and through a slip or a clip, it doesn't matter what, your tables get away from you. No matter, you have your spares in your zipper pocket. So you reach down and tug on the zipper-pull and... you got some grit in the zip from wriggling through a sandy gap near the bottom of the wreck, or you graunched it against some concretions and the zipper jams or the pull breaks off, or the drysuit manufacturer put a tight fold on the zipper and the teeth have worn or they unlock and jam, or you get one of the other zipper failure modes that the other list-members have reported. So the gear you need - in this case your tables - stay in your pocket. I, on the other hand, have a velcro pocket with my stuff clipped off inside. The only failure mode I have is if the velcro suddenly wears out mid-dive and lets go. Now, think this through, Adam. In our respective failure modes, Is my pocket locked open or shut? Is my stuff accessible or not? Is yours? OK. Here's the learning: Don't put anything in a zip pocket that you might need during the dive, because you might not be able to access it. So why have the zipper pocket in the first place? rgds billyw At 04:15 3/03/01 , Adam wrote: > >Bullshit. It takes a grain of sand or a piece of shell debris to jam a zip. You can pick that up and get a jam from it during a dive. > >Billyw, Lets be realistic here a grain of sand or a piece of shell??? DUI has heavy-duty zippers. >If you neglect cleaning it for a long time I must agree you will encounter problems. If you can - think over the years how many different kinds of equipment had functional zippers on them both tech or non-tech. BC�s, boots, gloves, suits, both OMS and Dive Right have utility pockets with zippers. You still don't get it, do you? Zipper: Failure mode: Jam. Sudden. Velcro: Failure mode: Softening. Gradual. >Halcyon has zippers on their BC�s. Do you mean sport BC pockets? Wrong forum. On their technical wings the zipper isn't accessed during dives. If it's going to jam it will jam out of the water where it won't screw the dive. Pocket zips on technical diving gear WILL screw the dive. >Point is as long as you properly maintain your equipment just like everything else zippers will function properly. Bullshit. Debris will jam a zip on the same dive that you pick it up. > >IF Velcro deteriorates, it doesn't happen instantly. It gets slack first. And guess what, Einstein, that's when you replace it. > >You don�t have to be Einstein to agree to that point. The day you realize your Velcro is slacking is the day you loose peace of equipment. Who told you that? > Years ago Viking had Velcro closures on their pockets. Then they switched to combination of Velcro, 1 inch webbing and plastic quick connect. Guess why they did that? Himm!!! May be Velcro was not holding the contents of the pocket. Marketing? New management? Cheap velcro? Using plastic quick connects is not a solution to anything. They should be no-where near any extreme diving equipment. > >Are you saying that because you've had no problem with your zip pocket so far, you never will and no-one else will either? > >Why don�t you read what I wrote! Instead of manipulating what you see. All I wrote was - I had no problems with the zippers. At no point I said I would not have problems. Then why use it to defend your promotion of the infalibility of zippers? >Not that it maters I would type it slowly for you so you can understand easy. My point is - One could eliminate potential equipment problems if one properly maintains their equipment. This includes all zippers on the dry suit. If you have the wrong eqwuipment to start with, like zip pocketrs, No amount of maintenance will make it safe. Zip pockets are wrong. Reason? Failure mode. See above. > >What, about medium breasts? > >What about it? I have trouble understanding the relation ship between medium breasts and pockets unless you keep your medium breasts in your Velcro pockets. And last point. Please keep your childish empty comments to your self. I don�t know why you feel you need to insult or flame. Maybe because you have noting to say, or maybe you have nothing between your ears. That was a quote from the guy you were agreeing with. Didn't you read his post before you agreed with him? Adam. Ever seen or heard of a 'heavy duty' wetsuit boot zipper jam? If you still don't understand the zip-failure problem, just let me know and I'll take you through it again. rgds billyw -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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