13 replies to this topic

[havlicek]

I get these from time to time and, they're basically a Mura Green can with different hole patterns... maybe Champion or someone else. Whatever they are, they make for nifty motors. So, while rescuing old motors, sometimes I'll find one of these calling out for help, and I'm happy to oblige.

First up is building a set-up, because you can't build and wind an arm for a motor that doesn't fully exist! The motor got the full inside and outside clean-up, a new set of magnets and can bearing, a vintage Mura endbell with everything cleaned/polished/straightened and reassembled with button head screws, and turning the head down on the screw that secures the buss-bar that passes in front of the endbell tower.

 

Natch, such a motor needed major caliber ammo, so I did a #28 double wind, again keeping things as neat as possible... not nearly so easy as doing a neat single.  Sometimes I get lucky:

 

This old C will live to fight another day!

 

-john

[boxerdog]

We always called those the "Trinity pattern" cans although they were also sold by Mura to replace the round-hole jobs. Tony could maybe shed some light on that, we thought we knew everything back then!

 

I think the Champions were similar but had only a single oval slot instead of the pair. 

[havlicek]

Thanks for the info, Dave. I have at least three... maybe four different Mura C cans.. .I thought they might be a Mura also (!?), but they were basically just a Mura can anyway in pretty much every other way. I figured they were either made by Mura, or sourced from whoever made the Muras and just changed up a little. They say imitation is the most sincere form of flattery.  

 

-john

[Geary Carrier]

Hi John,

 

When you love doing something, luck appears more often than not...

 

These old motors are mighty lucky.

 

Thanks,

 

g

[havlicek]

Hi Geary,

 

Well, practice does make perfect(er) also!  

 

-john

[Samiam]

Nice powerplant, John.

 

Seems like you are on a "doubles " streak. That thing should scream.

[havlicek]

Hi Sam, and thanks.  

 

I did some doubles and triples a few years back, and really liked how they worked. Then I got a request for some recently from a blogger, which led me to get back at them. I still think they make for really nice motors with a somewhat different performance characteristic, but they are a pain to do. The quads are really troublesome, both to wind and to make the comm connections especially, so I'm looking forward to getting back to singles.   

 

I also had a request about a "star wind," and that's where I drew the line. 

 

-john

[Koford fan]

I'm not sure what this is, but I had a old motor lying around and it looks similar to yours or same. I belive this also a Mura from the '90s.

 

[havlicek]

Same can, Tom. The single "axle clearance cut" is just visible on the other side in your picture.
 
-john

[Koford fan]

Yea i can see it, the "axle clearance" is pretty long. New pic: (marked with red line to see the cut):

[Bob Kolenda]

Hey John nice motor .The can you are using is a Muru R202.I have a few NOS ones and the package is printed  "W/Trinity hole pattern".  The standard 2 hole Mura C can is an R200.

[Bob Kolenda]

John ,I found one of the Champion versions made by Mura.

[tonyp]

When bob green was at Mura he made those cans for us with our pattern.


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[havlicek]

Ah...it all makes sense now.  The Champion one looks very similar to the Trinity but has only a single narrow slot instead of the two.  Thanks Bob & Tony!

 

-john