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Discussion of diving methods and equipment available prior to the development of BCDs beyond the horse collar. This forum is dedicated to the pre-1970 diving.
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Fibonacci
Master Diver
Posts: 110
Joined: Wed Oct 19, 2016 5:08 pm
First Name: Graeme
Location: Melbourne, Australia

Nemrod Snark III Double Hose LP seat assembly?

Thu Oct 05, 2023 8:07 pm

Continuing my Nemrod Snark DH reproduction parts, I'm now looking at the LP seats...

These are co-moulded around a metal shaft and X shaped stabiliser ribs, and I need to understand what this substructure looks like to create accurate RFQ drawings for the metal and co-moulded rubber parts.
Food grade silicone rubber should last longer than the originals.

However all of mine are still in serviceable condition and I don't want to cut one up!
Anyone got a trashed one they can either send to me or remove the rubber from and accurately measure please?

My 'guesstimates' below:
ImageSnark LP Seat ASSY 2 by fibonacci101, on Flickr

ImageSnark LP Seat ASSY by fibonacci101, on Flickr

ImageSnark LP Seat supports by fibonacci101, on Flickr
'A man can never have too much red wine, too many books or too much ammunition' Rudyard Kipling
User avatar
Fibonacci
Master Diver
Posts: 110
Joined: Wed Oct 19, 2016 5:08 pm
First Name: Graeme
Location: Melbourne, Australia

Re: Nemrod Snark III Double Hose LP seat assembly?

Fri Oct 13, 2023 9:53 pm

Found one to pull apart!
The X piece appears to be a bronze investment casting, with a stainless shaft crimped into it... then the rubber co-moulded around it.
Which makes sense for volume production.

ImageSnark LP Seat carrier ASSY by fibonacci101, on Flickr
'A man can never have too much red wine, too many books or too much ammunition' Rudyard Kipling
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