[ARC5] Re: ARC5 Digest, Vol 48, Issue 9

[WB9NWN]

JUST WANT TO THANK ALL OF YOU WHO REPLIED SO QUICKLY!
73'S
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> Today's Topics:
> 
>    1. BC-348 DYNAMOTOR (WB9NWN)
>    2. Re: BC-348 DYNAMOTOR (J Forster)
>    3. Re: BC-348 DYNAMOTOR (Mike Hanz)
>    4. Re: BC-348 DYNAMOTOR (J Forster)
>    5. Re: BC-348 DYNAMOTOR (Mike Hanz)
> 
> 
>
----------------------------------------------------------------------
> 
> Message: 1
> Date: Wed, 23 Jan 2008 15:17:58 -0800 (PST)
> From: WB9NWN <wb9nwn at sbcglobal.net>
> Subject: [ARC5] BC-348 DYNAMOTOR
> To: arc5 at mailman.qth.net
> Message-ID:
> <100194.70093.qm at web81913.mail.mud.yahoo.com>
> Content-Type: text/plain; charset=iso-8859-1
> 
> I AM TRYING TO CHANGE THE BRUSHES IN MY DM-28
> DYNAMOTOR. I CANNOT REMOVE THE OLD BRUSHES! ANY HELP
> FROM ANYONE? TNX: JOHN
> 
> 
> ------------------------------
> 
> Message: 2
> Date: Wed, 23 Jan 2008 18:40:25 -0500
> From: J Forster <jfor at quik.com>
> Subject: Re: [ARC5] BC-348 DYNAMOTOR
> To: WB9NWN at SBCGLOBAL.NET
> Cc: arc5 at mailman.qth.net
> Message-ID: <4797D068.F83BEA74 at quik.com>
> Content-Type: text/plain; charset=us-ascii
> 
> Do you mean the caps or the brushes themselves?
> -John
> 
> 
> WB9NWN wrote:
> 
> > I AM TRYING TO CHANGE THE BRUSHES IN MY DM-28
> > DYNAMOTOR. I CANNOT REMOVE THE OLD BRUSHES! ANY
> HELP
> > FROM ANYONE? TNX: JOHN
> > _______________________________________________
> > ARC5 mailing list
> > ARC5 at mailman.qth.net
> > http://mailman.qth.net/mailman/listinfo/arc5
> 
> 
> 
> ------------------------------
> 
> Message: 3
> Date: Wed, 23 Jan 2008 19:32:30 -0500
> From: Mike Hanz <AAF-Radio-1 at aafradio.org>
> Subject: Re: [ARC5] BC-348 DYNAMOTOR
> To: WB9NWN at SBCGLOBAL.NET
> Cc: arc5 at mailman.qth.net
> Message-ID: <4797DC9E.6010201 at aafradio.org>
> Content-Type: text/plain; charset=ISO-8859-1;
> format=flowed
> 
> They are most likely simply stuck because of
> corrosion between the 
> carbon brush and brass sleeve, John.  It's a common
> condition.  If you 
> can reach the brushes where they contact the
> armature, just push them 
> gently in in both the x and y axis with a wood dowel
> or other soft 
> material while pulling gently on the wire out of the
> back of the brush.  
> They usually pop loose with some gentle nudging. 
> Just try not to gouge 
> the soft copper of the commutator in your efforts.
> 
> 73,
> Mike de KC4TOS
> 
> WB9NWN wrote:
> 
> >I AM TRYING TO CHANGE THE BRUSHES IN MY DM-28
> >DYNAMOTOR. I CANNOT REMOVE THE OLD BRUSHES! ANY
> HELP
> >FROM ANYONE?
> >
> 
> 
> 
> ------------------------------
> 
> Message: 4
> Date: Wed, 23 Jan 2008 19:46:56 -0500
> From: J Forster <jfor at quik.com>
> Subject: Re: [ARC5] BC-348 DYNAMOTOR
> To: Mike Hanz <AAF-Radio-1 at aafradio.org>
> Cc: WB9NWN at SBCGLOBAL.NET, arc5 at mailman.qth.net
> Message-ID: <4797E000.25DC9EDB at quik.com>
> Content-Type: text/plain; charset=us-ascii
> 
> Mike,
> 
> Apparently the caps are stuck.
> 
> You make a good point though. The brushes could well
> be stuck w/in the
> holders and pushing them a bit w/ an orange stick or
> equal may free them.
> 
> Best,
> -John
> 
> 
> Mike Hanz wrote:
> 
> > They are most likely simply stuck because of
> corrosion between the
> > carbon brush and brass sleeve, John.  It's a
> common condition.  If you
> > can reach the brushes where they contact the
> armature, just push them
> > gently in in both the x and y axis with a wood
> dowel or other soft
> > material while pulling gently on the wire out of
> the back of the brush.
> > They usually pop loose with some gentle nudging. 
> Just try not to gouge
> > the soft copper of the commutator in your efforts.
> >
> > 73,
> > Mike de KC4TOS
> >
> > WB9NWN wrote:
> >
> > >I AM TRYING TO CHANGE THE BRUSHES IN MY DM-28
> > >DYNAMOTOR. I CANNOT REMOVE THE OLD BRUSHES! ANY
> HELP
> > >FROM ANYONE?
> 
> 
> 
> ------------------------------
> 
> Message: 5
> Date: Wed, 23 Jan 2008 20:09:24 -0500
> From: Mike Hanz <AAF-Radio-1 at aafradio.org>
> Subject: Re: [ARC5] BC-348 DYNAMOTOR
> To: WB9NWN at SBCGLOBAL.NET
> Cc: arc5 at mailman.qth.net, J Forster <jfor at quik.com>
> Message-ID: <4797E544.9010405 at aafradio.org>
> Content-Type: text/plain; charset=ISO-8859-1;
> format=flowed
> 
> Ah! Good point...if the brush caps are stuck, then a
> non-burring method 
> of removal is needed.  A collet is the best method,
> but failing that, 
> you can back down the list of cylindrical workpiece
> holders - a six jaw 
> chuck, then a four jaw chuck, then a three jaw
> (common with most 
> electric drills.)  By the time you get to a three
> jaw chuck or a pair of 
> pliers with a roughly round shape in the jaws,
> you'll need some serious 
> padding to keep from scratching the knurled pattern
> on the brush caps.  
> Cardboard is useful in this situation.  Let us know
> how it turns out, John!
> 
>  - Mike
> 
> J Forster wrote:
> 
> >Apparently the caps are stuck.
> >
> >You make a good point though. The brushes could
> well be stuck w/in the
> >holders and pushing them a bit w/ an orange stick
> or equal may free them.
> 
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