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 Posted - December 19 2010 : 9:32:15 PM
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Taking the venerable ( and stuck ) PT motor apart tonight, I found out why it wouldn't move - one of the brushes had become "stuck" to the armature's copper pads, and there was some oiliness on the contact copper. I literally had to pry it off, and left some carbon on the pad. I think it might have overheated and partially welded itself to the pad. Carefully scraped the pad clean of carbon bits, and then Q-tipped them with alchohol and burnished them with a green scrubby pad piece. Scraped the brushes clean with the exact-o blade, they were fairly thick, hence not worn out. Reinstalling them and screwing down the side plate, I got out my spare power pack, and touched both motor contact patches - a rewarding whir started slowly, then it picked up speed at the 3/4 setting I had it had. After about 20-30 seconds it was running faster. Deciding not to take it apart any further for now, I reinstalled it in the Amtrak shell and soldered the wires back to the motor, and placed it on my new battery-powered test track bed, formerly a Casio keyboard bottom shell. Had to push down to get it to move, then I reinstalled the weight, and it moved slowly down the test track. Ok, it's moving.  That's more than my other GG1 I have is doing, and it's in better shape! ( Although the motor had seized, and gears broke off, I need to replace it, haven't finished that project yet ). So at this point, I do have a powered Tyco GG1 that's working. Yay! It might not be breaking speed records, but it is functional again. Not bad for $3 and 20 minutes worth of work.  I'll have to get back on the other one, so I can have a pair of them working.
Jerry
" When life throws you bananas...it's easy to slip up"
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Country:  USA ~
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Posted - October 12 2011 : 7:39:36 PM
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See The Gs Are Immortal
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Member Since: July 28 2011 ~
Last Visit: July 01 2015
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Posted - October 13 2011 : 3:19:09 PM
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| Plus you're getting my black Tyco PRR GG1 Friday hehehe
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Country: USA ~
Posts: 14924 ~
Member Since: February 23 2009 ~
Last Visit: August 26 2025
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