[ARC5] [MRCA] Dynamotor Pin Repair

[Mark K3MSB]

There is an issue using a replacement banana plug.  There is very little
clearance between the stud of the new banana plug and the choke that sits
over it.  Even cutting the stud would be problematic.

[image: image.png]

I have replacement banana plugs and attempted to "deflower" it.   I tried
twice and on both attempts I only got 3 of the 4 petals removed.  As
careful as I was, the ones that broke off had a pretty good zing to them as
they flew off.  Fortunately, I did have eye protection on.

[image: image.png]

After getting the petals out of the replacement jack, I tried heating the
tip of the center part in the hopes the petal assembly would fall off.   Of
course if it didn't....  It looks to be a compression fit to the nub of the
tip of the center part.


[image: image.png]

It does fit onto the broken dynamotor assembly jack, but is loose as would
be expected.   I'm wondering if installing the dynamotor plate would be
enough of a compression fit to make it work?

I'd like to hear what Dave has to say once he returns from his "man cave"
as he's addressed this issue before.

73 Mark K3MSB



On Mon, May 12, 2025 at 12:02 PM <scottjohnson1 at cox.net> wrote:

> It’s a mini banana, just sweat another one in.  You won’t hurt the mica!
>
>
>
> Scott W7SVJ
>
>
>
> *From:* mrca-bounces at mailman.qth.net <mrca-bounces at mailman.qth.net> *On
> Behalf Of *Mark K3MSB
> *Sent:* Monday, May 12, 2025 06:44
> *To:* Military Radio Collectors Association (mrca at mailman.qth.net) <
> mrca at mailman.qth.net>; ARC5 <arc5 at mailman.qth.net>; List Milsurplus <
> milsurplus at mailman.qth.net>
> *Subject:* [MRCA] Dynamotor Pin Repair
>
>
>
> As can be seen in the following photo, one of the pins for a dynamotor is
> damaged.
>
>
>
>
>
> How have you fixed such a damaged pin?   I thought of putting a tiny
> amount of aluminum foil in the dynamotor base for adequate contact....
>
>
>
> 73 Mark K3MSB
>
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