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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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Goodlifedivers
Master Diver
Posts: 157
Joined: Fri Jan 16, 2015 2:45 pm
First Name: Danny
Location: Oyster Bay NY

Options for Spiro Mistral

Mon Sep 19, 2016 8:21 pm

Hey

I just picked up a Spiral Royal mistral off of the "bay". Been eying one for a long time and super happy that I was able to pick it up.

So, now what are my options for being able to actually dive this thing in regards to the nozzle size?
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Bronze06
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First Name: Russell
Location: Tabuk, Saudi Arabia

Re: Options for Spiro Mistral

Tue Sep 20, 2016 5:33 am

I take it that you already attempted to mate it with a US tank valve and came up about a millimetre or so too big in its diameter?!? If that is the case, you will have to have the body tank connection nozzle turned down to the correct size. I am assuming that it is a yoke type connection and not a DIN. I did this to a 58 "Mistral" and it worked out great.
"Where'd ya get that ol' thang, don't cha' know them thare things ill kill ya!"

Live From the Red Sea,

Russ
swimjim
Master Diver
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First Name: Jim
Location: Belgium WI

Re: Options for Spiro Mistral

Tue Sep 20, 2016 7:18 am

Might want one of these.... http://vintagedoublehose.com/store/#!/L ... ry=1964169
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Goodlifedivers
Master Diver
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First Name: Danny
Location: Oyster Bay NY

Re: Options for Spiro Mistral

Tue Sep 20, 2016 9:04 am

That's on the list swimjim.

As far as having the nozzle turned down, what should I tell a machinist to do?


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captain
Plank Owner
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Location: LaPlace, LA

Re: Options for Spiro Mistral

Tue Sep 20, 2016 6:56 pm

Goodlifedivers wrote:That's on the list swimjim.

As far as having the nozzle turned down, what should I tell a machinist to do?


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Tell the machinist to turn it down to 0.707", If you want to have it chromed after turning it down have him turn it to 0.705"
Captain
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luis
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First Name: Luis
Location: Maine

Re: Options for Spiro Mistral

Tue Sep 20, 2016 11:05 pm

To clarify, Captain is referring to dimension “R” on the nipple as shown in the interface diagram below.

Let me know if the diagram is too small to read.


Image
Luis

Buceador con escafandra autónoma clásica.
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