[TR] Wiper Motor Brush assembly

Wbeech@flash.net wbeech at flash.net
Sun Oct 7 16:01:01 MDT 2018

Yes, it needs to be spring wire, I liked Randall’s idea of using a ball point pen spring. 

Sent from my Handspring Treo

On Oct 7, 2018, at 3:44 PM, David Friedlander <forzion7 at gmail.com> wrote:

This isn't simply wire. It's spring wire....
Doesn't it need to be hardened and tempered wire?

> On Sun, Oct 7, 2018 at 10:45 AM Randall <tr3driver at ca.rr.com> wrote:
> The only that thing that matters is how much force it puts on the brushes. And you can adjust that after making the spring. 
> Make it too long to begin with, then trim to length. If that's too weak, trim another turn. If that's too strong, spread one of the coils a bit.
> If what you make the first time won't do, change wire size and do it again. Only takes a minute once you've got the setup.
> This is 18th century technology, not rocket science.
> -- Randall
>> On 6 October 2018 18:46:19 GMT-05:00, David Friedlander <forzion7 at gmail.com> wrote:
>> Make a spring? So many variables in such an inexpensive part: 
>> Wire gauge, pitch, overall length, etc....
>>> On Sat, Oct 6, 2018 at 7:43 PM Randall <tr3driver at ca.rr.com> wrote:
>>> I have successfully carved the " ears" from a scrap of PC board.
>>> Didn't lose the spring, but I suspect you could make a suitable substitute from the spring inside a retractable ball point pen.
>>> Or buy some spring wire and make one from scratch. I've done it in the lathe, but you could probably manage with a slow turning drill and a nail or similar for a mandrel. Its best not to try to hold the wire in your fingers, it can cut you pretty badly. So use a scrap if wood or similar to guide the wire as the drill turns.
>>> -- Randall
>>>> On 6 October 2018 15:50:29 GMT-05:00, David Friedlander <forzion7 at gmail.com> wrote:
>>>> Hey all;
>>>> The wiper motor on my TR3A looked quite sad. I removed it and 
>>>> proceeded to remover 60 years of crud, outside and in.
>>>> In the process of cleaning the parts, I have misplaced the tiny 
>>>> spring and the two tiny "ears" that hold spring to the two brush 
>>>> "arms" that rest against the armature. [Moss P/N 554-030]
>>>> Unfortunately, these parts are now NLA from any source I know of.  
>>>> See item number 2 from the Moss illustration, below. 
>>>> Seems crazy to buy a replacement/salvage motor just to replace 
>>>> a missing spring and retaining 'ears.' Ideas?
>>>> Thanks for any help!!
>>>> Dave Friedlander
>>>> '74 TR6
>>>> '59 TR3A

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