[Milsurplus] Dynamotor curiosity

[Michael Hanz]

Looking at the dyno photos, that's the way it was originally made, 
Jack.  See photo below on one of mine.



It's a pity the snap slide base with the four rubber pads is gone, but 
those small rubber pads are forever prone to detachment over time.  I do 
have a couple of spare "command set" dyno snap slide baseplates if 
anyone needs one for an application like this.  I'll even bore out the 
hole in the middle, for postage.  Rubber pads not included, but you can 
get the rubber on McMaster-Carr and use a razor blade to cut them out.  
That will still leave the eight small metal end plates to fabricate, but 
that wouldn't be too hard on a lathe.

- Mike  KC4TOS

On 3/18/2020 10:05 AM, Jack Antonio wrote:
> eBay item number 114152560578 is listed
> as a DM-53 dynamotor, the nameplate for which
> is clearly shown in the photos. The DM-53 is the
> dynamotor for the BC-733 ILS receiver, which
> doesn't have much collector interest(except
> for weirdos like myself).
>
> However, it also carries the nameplate
> showing it as a DY-34B/ARR-15. And it has
> the base and brush holder for the
> AN/ARR-15 dynamotor. The unit in the
> photo will not fit on a BC-733.
>
> Both nameplates look riveted on, so I
> don't think this is a ham hack.
>
> Just wondering if this was maybe a
> postwar overhaul of a DY-34 that used
> the machine from a DM-53 as a replacement.
>
> Just think it was unusual that it would
> carry the original nomenclature plate.
>
> So if anyone needs a dynamotor for their
> AN/ARR-15, here you go. 

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