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Mura 26t/26 C-can motor


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#1 Pablo

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Posted 06 May 2016 - 12:34 PM

Hurricane season is fast approaching so I thought I'd build a backup generator power plant.  :D

 

Mura can and endbell, Pro Slot Mega III magnets, Koford Big Foot brushes.

26t/26 Havlicek arm, .515" OD, .450" stack length.

Ball bearings, shunts, insulators, elephant ears, comm cooler, buss bars.

 

All parts on this one are brand new.

 

IMG_1374.JPG


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Paul Wolcott




#2 havlicek

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Posted 06 May 2016 - 12:54 PM

The sexiest of all vintage motors, Pablo, and in your good hands, bound to come out NASA-spec.

 

Build-on!

 

-john


John Havlicek

#3 Half Fast

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Posted 06 May 2016 - 03:40 PM

With that motor and wind, just attach a fan to the shaft and blow any hurricane away! :)

 

Cheers,


Bill Botjer

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#4 Pablo

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Posted 08 May 2016 - 12:48 PM

Thanks, guys. :)
 
Don't remember where I got this can, but it was true enough to pass the straightener test "no problemo."
A thin film of ATF and she went home nice and snug.
 
IMG_1375.JPG
 
The bearing hole only needed slight reaming to perfectly accept the 6mm BB using my Goat Boy BIT.
 
IMG_1399.JPG
 
Super Glue adheres to these endbells well (I tested it :D ) so I used it to secure the endbell ball bearing.
 
IMG_1402.JPG
 
Endbell hardware aligned without drama and passed the "shaft drops through the brush holder tool under its own weight" test perfectly. Not usually an easy thing to achieve on a 45+ year old motor.
 
IMG_1409.JPG
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Paul Wolcott

#5 havlicek

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Posted 08 May 2016 - 07:30 PM

Nice, Pablo!  

Careful with that armature, I hear they're pretty rare.   :)
 
-john
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John Havlicek

#6 Pablo

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Posted 09 May 2016 - 02:28 PM

As i was pondering if now was the time to build my motor using the rare all new Mura parts, I remembered a story about a Mississippi family who lost their young son to rabies and their home to Hurricane Katrina.

 

David Baria is a local attorney and member of the Mississippi House of Representatives.  Here is the part I want to share:

 

Losing nearly everything you own and watching your firstborn die in the span of a month can often destroy a couple – or it can give them a deeper vision into the meaning of everyday life.

David tells the story of sifting through the rubble of their home and finding four bottles of wine they had stored in a kitchen cabinet.

“Marcie and I had bought a really, really nice bottle of wine that we were saving for a special occasion,” he says. “That one shattered. The three cheapies were all fine.

“So ever since that moment, my saying has been ‘Drink the good stuff today.’ In other words, don’t wait, don’t put off soaking up all the things you cherish the most. Do it today, before it’s too late.”

 

If you want to read the entire article, here it is:

 

http://www.barialaw....e-things-right/


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Paul Wolcott

#7 Pablo

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Posted 09 May 2016 - 06:08 PM

Dusted off my Goat Boy arm slugs and selected a .535" for this motor.

 

IMG_1443.JPG


Paul Wolcott

#8 Phil Worthy

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Posted 10 May 2016 - 05:57 AM

"Do it today before it's too late."

Yes, Pablo, how often people put things off, waiting for the "right time." Somehow I don't think that's your style. You seem to "live in the moment."

"There's no time like the present."

I think that's enough idioms for today. 😀

#9 Pablo

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Posted 10 May 2016 - 09:38 AM

Magnets were a perfect fit in the can; no shims needed. A few squirts of Super Glue, done.

 

The arm OD is actually about .518", so I went with a .538" hone and a dummy "C" endbell to make a perfect hole.

 

IMG_1450.JPG


Paul Wolcott

#10 Coal Train

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Posted 10 May 2016 - 11:13 AM

Very nice
Robert Keough
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#11 Pablo

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Posted 10 May 2016 - 05:49 PM

The 26t/26 H arm was smooth, cool, and potent as always.

But, just a little too potent for what I have in mind for this motor.

So in the end I used a G12 arm - no shunts needed.

 

IMG_1451.JPG

 

IMG_1452.JPG


Paul Wolcott

#12 Bill from NH

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Posted 10 May 2016 - 09:02 PM

Did you use spring insulation?


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#13 Pablo

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Posted 11 May 2016 - 06:27 AM

No, not on the G20.


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