Handset CAD anyone? :)

Skipbreather

There's some good news/ bad news here. The bad news: The Brad Harrison cables I've bought thru McMaster all came w/ a plated aluminum alloy as the metal in the fittings. The good news: With a simple suffix on the part number, you can get stainless steel fittings. Catalog available on line: http://www.connector.com/home.html
Build the part number you need. Ordered my SS cables thru a local supplier- not sure if it can be done on line.

Ken

Genesis

The bad news from my perspective on those appears to be that they're all pipe-thread for the bulkhead models Not what I want to use into composite materials - I'd far prefer a straight thread and use an O-ring (as a crush washer) for a seal.

__________________
"A venturesome minority will always be eager to get off on their own, and no obstacles should be placed in their path; let them take risks for Godsake, let them get lost, sunburnt, stranded, drowned, eaten by bears, buried alive under avalanches - that is the right and privilege of any free American."
http://www.denninger.net
http://www.diversunion.org/liability.htm - Fix the Diving Cert racket

Scuba_Vixen

The smaller size, nano series, uses an M8 X 0.5 with Oring.

I agree, a tapered thread is not nearly as desirable as a straight thread with Oring.


Darlene

Genesis

Nanos don't help me - not enough pins

__________________
"A venturesome minority will always be eager to get off on their own, and no obstacles should be placed in their path; let them take risks for Godsake, let them get lost, sunburnt, stranded, drowned, eaten by bears, buried alive under avalanches - that is the right and privilege of any free American."
http://www.denninger.net
http://www.diversunion.org/liability.htm - Fix the Diving Cert racket

steevke

You can get Lumberg cables with M12 thread (I believe it's fine pitch but not certain, check on Lumberg website) with 12 poles.

Steven

Genesis

I'm getting quotes back on the handset....

The numbers I'm getting back are not bad at all..... under $150 per.

Here's the final picture as it went out..... I expect to release an order within the next week; I am waiting for a few more quotes to come back before cutting it loose.

The cable entry hole is sized for a Fischer DEE-104 connector; the bottom holes for the magnetic switches are 1/2" UNC threaded (the appropriate screw-in insert to hold the plunger, spring and magnet assembly is not going to be delivered with the handsets, as these are trivial to make on a lathe by hand)

I will likely buy 10 initially, as I intend to do a fair bit of destructive testing - so there may be some "extras" available......

I've had a couple of quite-interesting conversations with some of the shops, including one who knew exactly what I was building immediately when they saw the design..... this wasn't the FIRST part of similar function they had seen....

Attached Images

	K1-Rebreather Handset.jpg (19.6 KB, 73 views)
	K1-Rebreather Handset-2.jpg (24.8 KB, 69 views)

__________________
"A venturesome minority will always be eager to get off on their own, and no obstacles should be placed in their path; let them take risks for Godsake, let them get lost, sunburnt, stranded, drowned, eaten by bears, buried alive under avalanches - that is the right and privilege of any free American."
http://www.denninger.net
http://www.diversunion.org/liability.htm - Fix the Diving Cert racket