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Post by spirou on May 26, 2024 9:51:04 GMT -8
Hello,
After my dive yesterday, I was unhappy about the placement of the scubapro mk10,
If the mk10 is well placed on the single tank with cressi valve, double outlet, I had disliked the routing of his hose, and his placement on the twin tank.
So I take my calypso IV out of his box where he sleep since I purchase him.
I dismantled the calypso, I made cleaning....but...
But I was unable to replace the O rings, if someone have the generic NBR orings reference of the of the first stage, it should be very gentle to share.
Cheer's
PS I am sorry, for my bad english, construction, and tense must be very 😞 bad.
Fred
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Post by spirou on May 26, 2024 10:19:13 GMT -8
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Post by scubalawyer on May 26, 2024 10:38:18 GMT -8
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Post by spirou on May 26, 2024 13:18:34 GMT -8
I think that this regulator was not retrofitted. I purchase this regulator on a french site. The was not sold I. Europe. So he never received this little bushing. And I never see this bushing on schematic. Thanks for the information. And now.... Respectfully Fred |
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Post by spirou on May 26, 2024 13:42:07 GMT -8
Ok I understand the problem. And I see why the bushing is like that
Now find a bushing , or make one myself 🙄😤
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Post by nikeajax on May 26, 2024 17:17:51 GMT -8
Mon Ami, I want you to try something: go down to your local hardware store (quincaillerie?) and find the thinnest washer you can find that will fit on the piston-shaft and still touch the spring. Take a reading of your IP after you get it back together. The idea is to add more resistance to the spring make it stiffer. I hope this makes sense  JB |
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Post by spirou on May 26, 2024 20:14:40 GMT -8
Mon Ami, I want you to try something: go down to your local hardware store (quincaillerie?) and find the thinnest washer you can find that will fit on the piston-shaft and still touch the spring. Take a reading of your IP after you get it back together. The idea is to add more resistance to the spring make it stiffer. I hope this makes sense JB Or maintained the seat with a spring with washer on each side of the spring, but the spring must have good dimensions, a bit like mk25  Screenshot_2024-05-27-06-06-22-771 by Patrick Michel, sur Flickr |
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Post by spirou on May 27, 2024 6:38:12 GMT -8
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Post by nikeajax on May 27, 2024 8:54:51 GMT -8
Mon Ami, honestly, just try a very simple washer. I'm only guessing so don't quote me, but, each shim is about 1/32" and gives 5-psi, so a washer should be about 15--20-psi. The Scubair-II shares the same internals with your Calypso, here you can see the actual shims that go inside:  JB |
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Post by scubalawyer on May 27, 2024 14:07:24 GMT -8
As I recall, the castellegated bushing added by the US Divers recall had zero to do with increasing or maintaining IP, and everything to do with retaining the seat in place so it did not dislodge and cause catastrophic loss of air supply to the diver.
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Post by antique diver on May 27, 2024 14:49:33 GMT -8
As I recall, the castellegated bushing added by the US Divers recall had zero to do with increasing or maintaining IP, and everything to do with retaining the seat in place so it did not dislodge and cause catastrophic loss of air supply to the diver. ! There had actually been an actual diving incident in which the seat had moved out of place toward the piston end, causing a disruption of air flow to the diver. USD would comment no further than that on details. They did issue a mandatory recall of the Calypso IV and V, with directions on the update, and provided the bushings to dealers. We were asked to contact owners of all the Calypsos we had sold, and to inform them of the recall. They paid each of us some small amount (I think about $15) to perform the recall, mark the updated regulators with a punch mark on the threaded end of the yoke, keep records, and notify them of the serial numbers of the updated units. I still have the recall bulletin in my old USD info, and can probably find it if anyone is interested. |
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Post by nikeajax on May 27, 2024 15:14:18 GMT -8
I was trying to figure out how that thing worked, thinking, "Dang, that would make the IP about 450-psi, or something..." That was hyperbole  JB |
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Post by spirou on May 27, 2024 20:39:31 GMT -8
I was trying to figure out how that thing worked, thinking, "Dang, that would make the IP about 450-psi, or something..." That was hyperbole JB Hello my friend, Sorry. I am waiting someone, with more experience than who, who could explain more than me the problem. Not an IP issue, but the seat can move and sometimes stop the feeding of air to the diver. So now I must find something to fix the issue. The reg performed very well. Just I don't want be without air at 60ft or more 🤕🤕ðŸ˜ðŸ˜ Cheer's Fred |
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Post by vance on May 28, 2024 4:43:14 GMT -8
Did you check with Rob at TSM?
If someone has this part and sends me the dimensions, I can make one out of brass. This looks like a good candidate for 3D printing, also.
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Post by spirou on May 28, 2024 6:18:54 GMT -8
Hello Phil,
I made research on the net, I also checked on TSM, I look almost everything on TSM, I haven't found this Holly Graal.
Of course I take brass or 3D printing.
I am asking myself, if that washer must be perfect adjust , or could be with a little Spel,
Regarding his fonction (just in case of , stop the seat moving, and blocked the air intake.) it is unnecessary to be perfectly adjusted. I little Spel could be tolerated.
As. Antique diver, have pro experience on this reg, may be he could give us his advice 😄 about the question 🙄😄
Cheer's
Fred
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