[PSUBS-MAILIST] MK-101 Connectors

Fri Aug 1 07:01:15 EDT 2014

Hi Alan,
Just a thought on the connector issue.  These connectors are really good.
80amps and they can be pulled apart.  They come in various sizes with a
plastic shield.

http://www.hobbyking.co.uk/hobbyking/store/__67__4mm_Gold_Connectors_10_pairs_20pc_.html

On 1 August 2014 11:11, Alan James via Personal_Submersibles <
personal_submersibles at psubs.org> wrote:

> Hi David,
> not sure if you got my last email as this is replying to my previous one.
> Strange things
> have been happening lately with my emails.
> Yes you can poke the cable through the blueglobe cable gland, connect the
> wires,
> screw the blueglobe into it's fitting, then tighten the blueglobe around
> the cable.
> I have a heap of them, but they are the M16. I think we might have to go
> with the M32
> rather than M20, to have a chance of pushing the wires as well as the
> connector through
> the fittings opening, before screwing in the blueglobe, if you follow.
> There is the option to
> buy them with an adapter.
> I think Jon is verifying whether there is a 2 terminal 50 amp SubConn
> connector. A 2 wire version
> would enable the wires + joiner to fit through easier, however I like the
> 4 wire version as you can
> use the other 2 wires for your thruster temperature monitoring.
> we might be best to run the connector issues past Ken Martindale. He
> specializes in
> power electronics & has helped me in the past. If he's not listening in I
> could email him
> before we go out & buy.
> I had a look in an electrics store today & couldn't find a spade connector
> that could take 50 amps.
> I had that problem with my last sub. Nothing is simple.
> There are these gold plated high current cable joiners.
> http://www.jaycar.co.nz/productView.asp?ID=HC4064
> They would probably have a lower profile than a spade connector of the
> same amp rating.
> They are about an inch long so you would need around 6 inches of shaft to
> fit them in if you connected 4
> wires & had them staggered.
> Alternatively you can slice & solder the wires together, but don't have
> the same convenience in swapping thrusters.
> Trying to think all this through as I have $1000- worth of SubConn
> connectors that have been sitting in a box
> for the last 3 years[image: *:( sad]
> Will see what Cliff makes of all of this. He is hanging out with Kangaroos
> somewhere in the Aussie outback
> at the moment.
> Alan
>
>
>
>
>
>
>
> ------------------------------
>  *From:* David Colombo via Personal_Submersibles <
> personal_submersibles at psubs.org>
>
> *To:* Personal Submersibles General Discussion <
> personal_submersibles at psubs.org>
> *Sent:* Friday, August 1, 2014 7:52 PM
>
> *Subject:* Re: [PSUBS-MAILIST] MK-101 Connectors
>
> Hi Alan,
> With the blue globe male fitting into the top of the shaft, there would be
> no twisting of wires based upon one of there videos I watched on how to
> install., I Thought that I could use a flat blade connector and sleeve
> receiver from the subconn, to mate to the MK wires and  I would not have to
> push the wires much into the shaft. Its amazing that this information takes
> so much energy to work out the design, You'd think subconn, has come across
> this question before since its what they do.
>
>
> Best Regards,
> David Colombo
>
> 804 College Ave
> Santa Rosa, CA. 95404
> (707) 536-1424
> www.SeaQuestor.com <http://www.seaquestor.com/>
>
>
>
> On Tue, Jul 29, 2014 at 3:38 PM, Alan James via Personal_Submersibles <
> personal_submersibles at psubs.org> wrote:
>
> David,
> I am a few emails behind here, but that is exactly the solution I was
> thinking of.
> One problem I envisaged with the short shaft section that comes out of the
> motor,
> is how do you attach the wires. Connections can get pretty bulky
> especially after
> insulating them. You can't stuff excess wire down in to the motor. Also
> you would
> have to have room to twist the wires in the opposite direction to that of
> the connector
> prior to screwing in the connector. I am not sure if it is easy to pull
> the motor apart &
> attach the wires from a connector straight to the motor.
> The blue globe cable gland have an adaptor that you can screw the blue
> globes
> in to. If you used an adaptor you would create more room for pulling the
> wire
> connections through.
> If as I had suggested earlier, we had taylor made connectors with fittings
> on both
> ends, it could be problematic with large holes being bored through
> exostructure
> to get from hull to motor. I am thinking of situations like the R300 where
> the cable
> may need to penetrate a ballast tank.
> Alan
>
>
>
>
> Sent from my iPad
>
>
>
> On 30/07/2014, at 8:42 am, David Colombo via Personal_Submersibles <
> personal_submersibles at psubs.org> wrote:
>
> Hi Jon, I am having a short shaft machined to screw into the Mk treads,
> with a hollow bore, and a series of side taps that will be be used for temp
> sensors, and for compensating (oil or air not chosen yet). The mk wires
> will be attached to the end of the outlet side of the subcon connector and
> threaded thru a blueglobe seal. creating a pig tail assembly. I am not
> using the Mk shaft as the attachment point for the thrusters as I have a
> kort nozzle assembly for attachment to the sub body. Designed for ease of
> removal and bench inspection and optional compensation after future testing
> with the sensors on heat build up.
>
> Best Regards,
> David Colombo
>
> 804 College Ave
> Santa Rosa, CA. 95404
> (707) 536-1424
> www.SeaQuestor.com <http://www.seaquestor.com/>
>
>
>
> On Tue, Jul 29, 2014 at 10:22 AM, Jon Wallace via Personal_Submersibles <
> personal_submersibles at psubs.org> wrote:
>
>
> How will the penetrator connect to the MK housing?  Do you mean having
> subconn manufacture that end of the cable with threads to match the MK stub?
>
>
>
> On 7/29/2014 11:49 AM, Alan via Personal_Submersibles wrote:
>
> More connector thoughts.
> Would we be better off having penetrators rather than connectors?
> I believe they taylor make these connectors / penetrators, so why not have
> a
> penetrator for the through hull & a penetrator on the other end of the
> cable for
> fitting straight on to the thruster. Perhaps a combination of penetrator &
> connector to get through any exostructure that might be in the way.
> I am not hot on this subject, just learning.
> Alan
>
>
>
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