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Thanks for the comments. I would like you all to consider a few points that are not obvious. The correct bolt to use in the tank band set is a 5/16 hex head cap bolt 4-3/4 to 5 inches long. File the edge smooth after tightening. The square hole in the Halcyon plate was designed to accommodate a cap bolt facing away from the back to allow easier access of inflatable devices stored in the back plate cover pocket for self rescue purposes when diving offshore. The latest single tank adaptors are "hard coat" anodized to mil spec which affords a much greater resistance to salt water induced corrosion by providing a .005 " ceramic looking barrier. We actually demonstrate the durability and scratch resistance of this new process by borrowing the keys of the potential customer and attempt to gouge the surface. Then we invite the customer to try as well. The result is a residual track of brass on the surface that wipes away when brushed with the hand. The profile of the single tank adaptor in discussion seems like a major issue but in reality is very minimal and necessary for certain other superior advantages offered by the extra 1/2 inch. The primary reason for originally choosing this U-channel design was to be able to utilize my 70' & 120' MOD stage bottles rigged without removing the hardware. The stage straps fit nicely inside the channel and the 1-inch bolt snaps are hidden out of snag range. Secondly, the extra 1/2 inch allowed the reversed cap bolt fastener to be wing nut secured inside the channel, allowing the DLR (Divers Life Raft) and other closed circuit lift devices easy removal from the back plate cover pocket. Balance and clearance do not appear to be compromised in any detectable portion in comparison to the added benefits many recent offshore overnighters would have enjoyed while floating safely in a 300 pound, six foot Navy type life raft. I felt it was important to explain why we have such a "STA" and trust me, when I say we are constantly working on improvements. Thanks for all the input. RMC Robert M. Carmichael President / CEO http://www.halcyon.net/ World Record Holding Rebeathers and SCUBA Systems http://www.browniedive.com/ HOOKA Family Dive Machines since 1969 http://www.tankfill.com/ SCUBA air/nitrox/helium compressor and gas mixing systems http://www.gue.com/ Global Underwater Explorers (founding partner) dive training excellence, research, & exploration -----Original Message----- From: Al Marvelli [mailto:ajmarve@ba*.ne*] Sent: Tuesday, March 21, 2000 10:49 AM To: ben@wi*.co* Cc: techdiver@aquanaut.com; quest@gu*.co* Subject: Re: Halcyon gear... Why cant you just call Highland and get the right size bolts?? They also have a web site............... Regards, Al Marvelli ben wrote: > For what it's worth... > > If you buy Highland Millworks bands they come with 3/8" bolts which means you'll have to drill out the stainless steel back plate that Halcyon makes. > > If you have a stainless steel backplate and are using their aluminum single tank adaptor you'll have to completely disassemble it after each ocean dive or face serious electrolisis. > > -ben > > --------------------------------------------------------------------- > To unsubscribe, e-mail: quest-unsubscribe@gu*.co* > For additional commands, e-mail: quest-help@gu*.co* --------------------------------------------------------------------- To unsubscribe, e-mail: quest-unsubscribe@gu*.co* For additional commands, e-mail: quest-help@gu*.co* -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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