joeym35a2 wrote:it was a momentary switch i figured out what i bought but the stupid blue thing just drove me crazy and i just had to know what the heck it was for it was quite the conversation peice standing around non vintage friendly dive store with shop owner confused too as where to stick the blue piece he did have a few suggestions but im not sure its appropriate to list them.
i only bought it as i needed it for a few dives and it looked old and shiney enuff to replace tekna to get away from the "you cant dive shop dives becuse you are dangerous with old equipment that cant be passed to a buddy " and no i didnt get it from the dive shop!
now that i am on a computer i can see your photo here is one of mine after just getting back into diving after a 20 year break using gear i scrounged up and some i bought. it was quite the shock going from dive tables to computers.
and Bc is only to be used on surface in an emergancy to just hit the elevator button to go up or down and "who cares about how much weight you got on if you sink add some more."
i just want my tekna to work damnit !
what is the bx conversion???
if i found the plastic model would it be possible just to switch housings if the performance is similar? then i could still keep the metal instead of plastic housing and at least have something im somewhat used to using.
ill have to add photo later i just tried 6 times and it wont let me
The T2100BX is not a conversion. As I stated earlier, there were three models, consecutive, each replacing the former. The T2100 brass case. That was followed by the T2100B with the plastic case but same innards as the T2100. The T2100BX followed and was plastic throughout. It was a piece of junk. Most components from all three can be interchanged into all sorts of hybrid configurations.
These are all servo operated second a stages. They operate very different from the vast majority of second stages in that the ambient diaphragm does not directly push a lever but instead causes a leak in a balance chamber by offsetting a tiny (tilt) valve which in turns causes a much larger (downstream) valve to open. Similar to the T2100 and a contemporary of the T2100BX is the Oceanic Omega and later Omega II. The Scubapro Pilot as well, so called because some refer to the servo valve as a pilot valve. The Scubapro and Omega used a small downstream pilot valve, the Tekna used a bitsy little tilt valve.
If that is a 109 you scrounged up, unlike the Tekna, you can get parts to rebuild it.
The Tekna second stage was designed originally to never require a service. Your first mistake was taking it apart. Unless it is not working correctly, leave them alone. In actual use the tilt valves were problematic and did require occasional replacement. But, there are no more left, all that I find, new old stock or otherwise are not serviceable. The large, quarter sized "diaphragm" inside the back of the body is the main flow valve. It tends to take a set and develop little pin cushion indentations matching the holes in the body. If you move it, you are screwed. Well, maybe not entirely, if you moved it, put it back like it was. For some reason, those sometimes go bad. I have never been able to identify exactly what constitutes a bad one verses a good one.
Such are the mysteries of the Tekna.
And do not take this the wrong way, I do not know you well yet, and I dissagree with many of my compatriot vintage divers, old gear will in fact kill you if you do not know how to service it and do not know what you are doing when you service it.
And, BTW, the Tekna is not vintage, but it a classic nonetheless, the brass case T2100 anyways. It was very modern and space age.
but working on it.
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