Dexta 4 pole regulator

dextainwa · Oct 25, 2014

I've owned this 1960 Dexta for three years and am working on the charging system. The Generator was given a good rating by my local repair shop. The Dexta came without a regulator. I ordered and received one. It is the correct appearance, but it has four connections that are the Pin type. I do not have any of the original wiring, so I am going to wire it per the Dexta wiring diagram. I can not find any info about this type of regulator. It appears that the pin holes are about 0.200 inch in diameter and that the wires and pins would be held in by the metal plate that is labeled D, E, A, F. There is a phenolic plate and rubber gasket under the metal plate that would provide insulation.
A. Should I return this and get the screw terminal type?
B. Where can I get pins if I need them?
I'll put on the wire terminals that I need.
Many thanks, this is a great resource.
David

dextainwa · Oct 26, 2014

I'm replying to myself with an update. I jury rigged the regulator with temporary wiring, and it works great when I start the motor and rev it up. 15.7 volts dropping to 14.2 in just a minute.

Now I still need some advise on the round pin (bullet) connectors. I see the British seem to use a 4.7mm (0.185 inch) diameter bullet. It would be a bit small and how is it held in place on this Lucas type regulator?

Is this the right approach?

Thanks David

richardinnz · Oct 27, 2014

Originaly the harness had bullet connectors that went in the regulator and were held in by the plate with a couple of screws and is correct for your tractor and nearly every thing else British at the time including MF, David Brown and IH had them.
If you order a regulator for a later machine, like a MF 135 or 165 (not a 35 or 65) you will get one that looks identical but with with Lucar (spade) type connectors that you will be familiar with and can obtain and away you go. I cannot remember the last time i saw those Ripaults (the company that made many of the harnesses) type bullets. The later Ford had the Lucas RB340 regulator instead of the RB106 that you have and it is a lot bigger, so you will need to go to MF or David Brown who carried on with the RB106. Have a look on Bareco.co.au and you should see what you need and be able to get from this site. Hope this helps.

dextainwa · Oct 28, 2014

Thanks, because it does help. I went on a search to learn more and I find there is lots of displeasure created by these connectors; in the tractor, car and motorcycle world. I especially appreciate the note about the RB106 and spade terminals. All "old" connections can present problems; not that I love the misery, but I do appreciate the outcome of solving the problem.

dextainwa · Oct 30, 2014

I took a leap and soldered wires into the sockets of the voltage regulator. Connected those to the wiring that I had previously installed and it works well. I also changed the location of the regulator to avoid installing long wires. I mounted it above the battery. I did notice that the regulator I have, has no markings, and no way to easily remove the cover as it is crimped on. That makes me think made in China, and brings fear to my heart.

I do intend to install a voltage gauge, as I like that information.

David

(quoted from post at 12:34:41 10/28/14) Thanks, because it does help. I went on a search to learn more and I find there is lots of displeasure created by these connectors; in the tractor, car and motorcycle world. I especially appreciate the note about the RB106 and spade terminals. All "old" connections can present problems; not that I love the misery, but I do appreciate the outcome of solving the problem.

dextainwa · Nov 3, 2014

One more note, I converted the dynamo and the system to negative ground. It works fine, and I don't have to reorder my thinking every time I work on it. This was my first experience with Positive ground.

David

Dexta 4 pole regulator

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