MANTUA 2-8-2 MIKADO

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That's a neat suggestion. Will have to think outside of the box like that.

Issue is what is the actual inside measurement? I have made too many mistakes with taking the outside measurement when I need it to fit around the 3/32 nut, or using a 3/32 diameter circle and not taking the flats which is where the 3/32 measurement actually is.

This reminds me to make one with my 3d printer.

Appreciate the info!
 
Contact J.I. Morris, Southbridge, MA, for a set of E-Z socket wrenches 00-2. I can't recall which one I use for most Mantua steam locomotive hex-head bolts, but they are a handy tool. Latest price on their website is around $24.95, probably plus postage.
 
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So, I ended up burning up the Kato motor that I had in this. I thought that it may have been binding up or something, but when I finally got around to removing the motor, the chassis runs smooth as silk, so not sure why the motor would fail. Glad I used goop to hold the motor in as it didn't take much to get the motor out.

Anyway, pulled the brushes out, cleaned the commutator, scraped the gaps and then put the motor back together. Oiled the bearings and started a run in on the motor. I watched as the amperage of the free spinning motor started to climb from .02 to .03 amps over a period of 10 minutes.

Not the direction that I was expecting, so I took the brushes back out and found that the brushes started filling the gaps in the commutator again. Strange. So I cleaned it all out again and put new brushes in. Motor didn't show any weird brush wear this time, so got everything back together. It's noisier than before, but will run it later tonight.
 
Yeah, it'll require a new motor. I guess the commutator might have rough edges that cause vibration. I cannot find the torque rating for the motor, but I figure since it is used in almost all of Kato's stuff, it should be strong. While the motor was new, it may have been at least 20 years old if it was one of my old stashes.
 
Kusojiji said:
Yeah, it'll require a new motor. I guess the commutator might have rough edges that cause vibration. I cannot find the torque rating for the motor, but I figure since it is used in almost all of Kato's stuff, it should be strong. While the motor was new, it may have been at least 20 years old if it was one of my old stashes.
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Somewhere a long time ago, in a land far, far away, I remember reading documentation stating the magnets in DC motors would lose their strength over time from non-use. This could be what happened here. At least the HM5 is a common motor, and is readily available. I used them in a lot of motor upgrades over the years with good results.
 
Yep, and it also looked like one of the brushes turned to mush. Only one of them seemed to be grinding down much faster than the other.
 
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