9 replies to this topic

[Ted Bier]

I have this collection of filthy, corroded T-Jet armatures on gear plates. They were in a pit case that was stored somewhere with a whole bunch of moisture.

 

Is there any saving them? Can I just put them in a cup of vinegar?  Or will that just destroy the armature wingdings?

 

Notice the rust on the pins of the armatures.

 

Help!

 

Thanks!

 

 

 

 

 

 

[917-30]

I’ll be interested in answers to this - I recently got 9 or 10 Open arms (23, 24, 25) from, I think, around 1972. Definitely stored (along with 5 complete cars, 6 complete motors) in a moist environment, smelled like more than just a basement - chicken coop maybe?

Anyway, the arms, even in tubes, have corrosion not quite as bad as Ted’s stuff, but I’m assuming that the same techniques and cleaners/chemicals might work. I think I’ve seen here on Slotblog that ultrasonic cleaning can have some detrimental effects on older armatures.

But as a former Tjet racer, I’ve often wondered if anyone refaces the commutators. Maybe not enough shaft to grip or support, or not enough material to work with?

[drrufo]

Try an eraser or a fiberglas pen that is available at any electronic supply store. I use either to clean up wiper arrays on my controllers.

 

John Andersen

[team burrito]

i would soak them in wd40 & clean it with toothbrush. as for the com plate, i would use 3m rotary bristle brush. it does a great job cleaning off corrosion without taking off the copper - use light pressure.

[team burrito]

Try an eraser or a fiberglas pen that is available at any electronic supply store. I use either to clean up wiper arrays on my controllers.

i wouldn't recommend the fiberglass pen. i've used it before & the bristles break off & gets in your finger tips, even if you're wearing gloves. the 3m bristle brush does a much better job without splinters.

[Ted Bier]

Another simple question .

Is there a good brand of eraser people use for simple cleaning of armatures ?

I have bought some, they just don't work and I always end up using an eraser of a good brand pencil ! There has to be something that works better....I hope !

[ajd350]

Check with an art supply store. They might have pen erasers. they are abrasive enough to clean the comms without damage. I find typewriter erasers occasionally at yard sales. They work as well.

[Revtor]

https://www.flrprodu...-polishing-tool


I use one of these, t does a great job to smooth out and polish tjet comms.

Steve

[strummer]

I find it (perhaps) significant that no one has responded by saying these are too far gone to mess with: a testament to just how durable these little buggers are... 

Mark in Oregon

[Ted Bier]

So I experimented and won !

Back from the Dead !

This was the worst one !

Used Brass-O , then good ole' WD-40 .

And yes it runs !

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