D420! How about that?
- Thread starter axxel57
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eho
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Gee, I'm not a tech geek (just a diver) but I just love this thread. I've only ever known the D series so I don't have any other expectations but what it does (which is work damn well for a ridiculously long time). Maybe I'll get an S600 for my pony bottle reg. 
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Well, used it in the pool for a bit. I enjoyed it, but I agree with Buddhasummer (I think he said it) about the narrow exhaust T putting the bubbles more in my face than I would like... But I'm also used to old Conshelf wide T's. As you suspected, the knob I made cam-levered itself out while in use (and now is somewhere in my pool). I have a new variation of the pin that is going back with it for you to test. However, based on the very little I used it, I think it may be unnecessary or only really useful as a fine tuning tool for in water right after service, then replace with the sticker once tuned to suit.
Just my observations.... I will also gladly continue working the pin for optimum results, if the interest is still there.
Boxing it up shortly, now that it's thoroughly dried, and taking to the post office this afternoon.
Respectfully,
James
The more folks talk of the exhaust, and lately diving almost exclusively with DH regs, I'm continuing to distance from wanting one. I have a collection of Pilot/Air1/Dxxx regs that I thought it interesting to get "the next best thing", but perhaps not...
Looking at it, the exhaust is no narrower than an AL Micron, or some of the other small form factor regs out there... the bubble complaint really could be a few of us just being bubble snobs after being used to old school wide T designs.
I just don't want to unduly influence anyone....
Thank you for your efforts James, I think back on the original D series not having any adjustment on the fly like most standard design have and how the D400 I had sat unused for years but when hooked up breathed fine every time I checked it, the low spring pressure seemed to have done the trick.
I’m glad you got the chance to try it.
The short exhaust “T” can be an issue, the C370 also has it, I wonder if it’s an artifact of the low exhaust WOB work they are concentrating on? I would add a longer “T” if it were available (next project James) like I alway did with Atomics. I have found that when I use my Tusa Paragon mask the bubbles never come out where the can be seen, it’s a really nice mask with a big funky frame to hold the lens in, that frame acts to channel the bubbles toward the back.
I didn't dis-assemble anything on the 420 (combination of no documentation, not mine to tear apart, and it cost you more than I have total invested in the rest of what I wore in the pool!), so I'm not clear on the T attachment. I already boxed it, but as I recall, it looked like tabs, or flaps. If you mean for the C370, I've never seen one in person. Depending on the attachement method, it may be pretty easy to re T them. I'm actually planning on doing T's for my old Conshelfs with the screw on T's.
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