[R-390] r-391 motor bearing question

Fri, 11 Jan 2002 13:05:16 -0500

One place in the US that sells some very good bearings in the smaller sizes
is BOCA Bearings.  We use them in R/C helicopters, so I can tell you that
they will take a LOT of punishment.

try bocabearings.com (No www)

Bob - N0DGN

----- Original Message -----
From: "mikea" <[email protected]>
To: <[email protected]>
Sent: Friday, January 11, 2002 12:46 PM
Subject: Re: [R-390] r-391 motor bearing question

> On Fri, Jan 11, 2002 at 12:30:46PM -0500, Paul H. Anderson wrote:
> >
> > I am still refurbing my R-391's autotune.  I still have a lot to learn,
> > but am making progress.  I'll share my notes with everyone when I'm
> > farther along in the process.
> >
> > The DC motor needs attention.  Among other things, I need replacement
> > bearings.  I need two .25" ID, .75" OD, .25" thick bearings.  They are a
> > relatively standard size, as near as I can tell.  I'd like to get some
USA
> > made bearings.  Anyone know of a good place to go for standard size
> > electric motor US made bearings?  Do they exist?  I know where I can get
> > Chinese made ones.
>
> Most any medium-size city will have a bearing supply house of
> some sort. Try your Yellow Pages first; after that, try a web
> search on "bearings" and the name of your state or province.
> If even that fails, then just search for bearing sales houses
> and manufacturers.
>
> Good luck.
>
> > I also would like to find replacement brushes (I bought some from a HW
> > store that I can make work).  Are there any good places to find electric
> > motor brushes?  My web searches didn't really turn up anything.
>
> Yellow pages, "motor repair" or "electric motor". Some places
> will even make them for you, machining the graphite to fit.
>
> Good luck.
>
> --
> Mike Andrews
> [email protected]
> Tired old sysadmin since 1964
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