Specs for Molex connector wires

[mr_v]

Yeah, RMS is different.

You will not find an AK wet cable with one female and one male end to get that break. I inquired. Typically, the cables come with male or female on one end leaving the stranded end open for other applications. You can buy two cables - one male, one female - and join them.

 

[beldridg]

Yeah, RMS is different.

You will not find an AK wet cable with one female and one male end to get that break. I inquired. Typically, the cables come with male or female on one end leaving the stranded end open for other applications. You can buy two cables - one male, one female - and join them.

Now I get what you are saying.

I actually inquired with Richard @ DiveTronix about building a cable with a 4 pin female at one end and 4 pin male at the other to do what I want. He said he could do it but it would be expensive and it would make more sense if there were a bunch of people that wanted similar cables in order to justify the cost.

I put in the second 4 pin cable instead.

Modularity is really key in rebreathers -- especially when dealing with stupid molex connectors.

- brett

 

[beldridg]

PS - The other big advantage if I had a 4 pin AK cable with a pigtail is that I could easily remove the cell tray and take it into my hotel room, luggage, etc.

As it stands right now, I can't take the cell tray out without disconnecting the two monitor cells and pulling the wire out from under the RMS board.

If I had a cable with a "break" then I could very easily pull out the cell tray.

More projects on the "to-do" list....

- brett

 

[mr_v]

Pricing indeed bites. You are looking at:

- $200 in cable costs (2 cables around $100 each)
- $30 for the connector box, McMaster-Carr
- $5 for Molex connectors, wiring

I am rounding the prices to $5 minimum.

Here is how you can save $.

When you piggy tail dies, i.e., the Molex wires become too short to be useful as you cut them periodically to remove the bad wiring, save it. That's your female end of the deal. Buy the male end and the rest of the components. I am kicking myself for not saving the piggy tail.

 

[Divermikey]

Now I get what you are saying.

I actually inquired with Richard @ DiveTronix about building a cable with a 4 pin female at one end and 4 pin male at the other to do what I want. He said he could do it but it would be expensive and it would make more sense if there were a bunch of people that wanted similar cables in order to justify the cost.

I put in the second 4 pin cable instead.

Modularity is really key in rebreathers -- especially when dealing with stupid molex connectors.

- brett

I would be willing to get in on a "group" buy on a 4 pin pin AK cable if Richard can make that happen.

 

[mr_v]

I would be willing to get in on a "group" buy on a 4 pin pin AK cable if Richard can make that happen.

@Divermikey , @beldridg, @stuartv - I will start asking around. While it is possible to make a connector, I am curious whether AK Industries, the manufacturer, can do a custom run.

If anyone else is interested, please let me know.

 

[mr_v]

Folks - good news. It is likely we can get wet mate cables in question manufactured. I will DM those who were interested.

 

[Wibble]

Resurrection...

My Revo failed a couple of weeks ago whilst on a trip to France; one of the Molex cell connections broke as it corroded and fell apart.

Amazingly another guy happened to have a bunch of Molex connections which he'd bought for his Meg which apparently uses the same cells. Phew; managed to replace the broken connector(s) and went diving.

It's patently obvious that the Molex connectors on the Revo corrode within the humid, high oxygen environment of the lungs. This corrosion runs up the thin cables and needs to be cut back.

The lovely people at NarkedAtNinety sell packs of Molex connectors and pre-wired Molex connectors on twisted wire:

Molex Connector Housings and Gold Pins

x4 molex connector housings and x8 gold pins

www.narkedat90.com

Molex connector to bare wire - pack of three

Gold Molex connectors pre-crimped to approx 270mm of twisted wire and fitted into a Molex housing - Worldwide Delivery Available

www.narkedat90.com

Question:

To prevent the corrosion running up the cable from the molex connection, it would make sense to solder a cable and epoxy+shrink wrap that joint, leaving the other cable to be replaced when the Molex connectors break. Is this the best course of action?

There's nothing wrong with the connector per-se, just the Molex end.

Other options? Do those cell caps work? Cannot imagine that they would given the large pressure variations when diving.

 

[rjack321]

Other options? Do those cell caps work? Cannot imagine that they would given the large pressure variations when diving.

At least on the Meg the cell caps do indeed work. My molex connectors are quite vintage and doing fine. It helps that the wiring business end of the cell in a Meg isn't in the main humid gas path. I have no idea where to find those little suckers though

 

[Wibble]

At least on the Meg the cell caps do indeed work. My molex connectors are quite vintage and doing fine. It helps that the wiring business end of the cell in a Meg isn't in the main humid gas path.

Useful to know, thanks.

I have no idea where to find those little suckers though

Rubber Sensor Cover - Fits Molex Sensors

.

www.narkedat90.com