Making regulator adapter for Spyders-Need thread types.

black_angus1 (Banned) · 08-10-2007, 07:47 PM

I am going to make a regulator adapter for the front blocks that don't accept standard regulator threads, such as the ones on Pilots and Fenixes.
http://www.actionvillage.com/is-bin/...AAE LXVKSKmLo <<That kind.

I need to know what kind of threads the screws that hold the regulator onto the front block have. If you have this kind of front block, you know what screws I'm talking about.

Also if anybody knows what kind of threads regulators have, that would be very much appreciated.
EDIT: I found out what kind of threads regs have, it's the same as tanks. CGA320, unless I'm wrong...

psychoballer625 · 08-10-2007, 08:56 PM

1/8 i think

black_angus1 (Banned) · 08-10-2007, 09:11 PM

Well seeing as it's Metric, it won't be 1/8th anything.

And if just found out what kind of thread the screws are, it's M5XO-.08

My only problem is where can I find the CGA320 tap? My brother doesn't have that one. As well as raw aluminum?

jester_s1 · 08-11-2007, 10:56 AM

You can get the aluminum from mcmaster-carr. It's online. They may have the taps too.

black_angus1 (Banned) · 08-11-2007, 04:52 PM

Alright thanks.

I also read that the CGA320 tap is kinda rare and not really used, and that the 1/2" NPS tap will work instead...anybody know anything about this?

LlamaRama · 08-11-2007, 04:56 PM

The thread aint metric. I swear it's 1/8 NPt or whatever. I mean, it HAS to be the same threading on all tanks and regulators.

RabidHobo · 08-11-2007, 05:08 PM

Quote:

Originally Posted by LlamaRama

The thread aint metric. I swear it's 1/8 NPt or whatever. I mean, it HAS to be the same threading on all tanks and regulators.

spyders use metric threads.

standard markers use 1/8"
but not spyders.

NoelyDeezNutz · 08-11-2007, 05:19 PM

he's also thinking of the macroline/steel hose/gauge fitting tap (this is 1/8 NPT)... not the tank/asa size... you need a 1/2 NPS tap for the ASA

black_angus1 (Banned) · 08-12-2007, 12:51 AM

As I said earlier, it's Metric, BUT the CGA320 (Metric) tap isn't used very often, and the 1/2 NPS (Imperial) is supposed to work, and I would like to know if anybody knows FOR SURE about that.

RabidHobo · 08-12-2007, 03:47 AM

i would just buy a front block without a volume chamber. and tap it.

y0da900 · 08-12-2007, 08:49 AM

Quote:

Originally Posted by black_angus1

As I said earlier, it's Metric, BUT the CGA320 (Metric) tap isn't used very often, and the 1/2 NPS (Imperial) is supposed to work, and I would like to know if anybody knows FOR SURE about that.

It works fine, a lot of us have used them before. Just be aware that you may need to get 2 taps for it, one left normal to start the threads, and either a bottoming tap or one with the tapered starting threads ground off to finish the threading deeply enough that the regulator can thread in far enough for the o-ring to seal against the inner bore. You will have a very very difficult time doing this without a metal lathe.

black_angus1 (Banned) · 08-12-2007, 05:40 PM

Yeah, I might have to have somebody do it for me at school, because I'm not taking any shop classes this semester, so I won't have access to the lathe.

But I'm pretty strong and for something like this I can be patient and take my time.

Dead_Body · 08-12-2007, 09:14 PM

Or just buy a Trinity front block?

Unless you're making a bunch of them the tooling and material will cost you way more than a couple of Trinity blocks will. And then there's the time and machine access.

black_angus1 (Banned) · 08-12-2007, 09:57 PM

A foot-long tube of the aluminum I'm getting will cost $8.88, plus shipping. Then I'll have to buy the 1/2"-14 NPS tap, then after that it's just labor. Unless that tap is horrendously expensive, I'll be good. And I can sell a couple for profit, I'm sure SOMEBODY would buy one.

y0da900 · 08-13-2007, 06:53 AM

How exactly do you plan on making the bore above the threads that the o-ring makes the seal with?

black_angus1 (Banned) · 08-13-2007, 12:12 PM

If you look at the front block, there is an o-ring slot on the little thingy that the regulator attaches to. There will be an o-ring in that, thus making the need for me to make an o-ring slot in the adapter itself null and void. Very good question though.

LlamaRama · 08-13-2007, 12:24 PM

Quote:

Originally Posted by RabidHobo

spyders use metric threads.

standard markers use 1/8"
but not spyders.

Yes, they do use metric thread. But they accept standard regulators and tanks which aren't metric. Congratulations, you failed at regurgitating a piece of knowledge.

black_angus1 (Banned) · 08-13-2007, 10:11 PM

No, see when you screw in a standard regulator into a Spyder front block, it magically changes its threads into Metric...