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 Posted - July 12 2020 : 6:50:26 PM
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So I'm still having issues with the Powertorque in my Tyco E7A, and I'm at a loss now. I cleaned the armature, the bushings look good, springs look good, magnets looked good. I rebuilt it, and the powertorque winds up good when set on the rails without wheels. However with wheels on it won't move forward, or if it does it is choppy until it kicks the safety reset on my transformer. It runs okay in reverse. The pinion gear isn't binding or too nawed up, so that's what's making me wonder. Any help is appreciated.
Aaron Anderson
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Posted - July 12 2020 : 7:37:27 PM
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These Power Torque motors are simply awful. I mean the worst.
However, RP Model Railroads, I believe, has had some good success overhauling them
and making them run good.
Other people have put in CD ROM motors from old computers that run really nice.
Me, I just throw them in the scrap box and hunt up the square, open frame MU 2 motor,
which have proven very reliable, even if some are half a century old.
There are DIY videos what to do with PT motors, I tried one, the motor sprang to life, then
burst into gray smoke after three yards.
That City of SF really is a classic beauty. Best of luck to you.
Take your pick, but RP has good insight on this issue, and you see how nicely Retro Tyco II runs:
the proof is in the pudding, or the PT.
Edited by - Chops124 on July 12 2020 7:38:37 PM
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Posted - July 12 2020 : 8:09:18 PM
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You say it runs good until the wheels are on the track. The only thing I could think of is something with the wheels themselves. Perhaps one wheel could be flipped the wrong way or something insulation wise could be wrong. But then again, I'm sure you would have already noticed this, as it's easy to tell which wheels pick up power and which don't. But then again again ( ), you say it runs fine in reverse so this can't be the problem. Have you tried putting leads to the motor block itself and testing it in both directions? Sorry, but I don't have much experience with TYCO. My friend Dan, who actually just joined, might be of help. He knows quite a bit about these old TYCO's
Edited by - BlaxlandAlex3 on July 12 2020 8:15:00 PM
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Posted - July 12 2020 : 9:28:04 PM
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I do have quite a bit of luck at getting Tyco PT motors to run well, but they require TLC and traction tires...often..
Now, to the problem. It runs fine in reverse, but it jams up when running forward and then shuts off the powerpack. I've actually had this issue with my Silver Streak ALCO C430 a while ago - in fact, the exact same problem - and what I did is upon screwing the bottom plate back on after installing traction tires, I must not have screwed it on properly or something, and then I noticed the middle gear/axle wheel set would drop a bit when the gears would begin to propel forward, jamming the sequence and thus preventing the locomotive from moving. Have you tried checking out the middle gear/axle wheel set when you apply forward-power?? - if it drops even slightly, this can affect the movement of the rest of the gears.
Image credit to original photographer
What I did to solve the problem was screwing the bottom plate on extra tight, and that seemed to work. Worst case scenario, you could try a "new" middle gear/axle wheel set from a parts PowerTorque...that might do the trick too.
"Let your light so shine before men, that they may see your good works, and glorify your Father which is in Heaven." - Matthew 5:16
Youtube Channel: www.youtube.com/rpmodelrailroads
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Posted - July 13 2020 : 05:23:24 AM
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You know RP, seems to me that bottom plate was difficult to screw back in. I also seem to remember that the wheels were hard to get off. I've got some spare powertorque screws, so I might have to try and get a better fit. I'll try that next weekend. My new Spirit of 76 Super 630 should coming be in the mail today, so that's gonna be my project after work today.
Aaron Anderson
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Bamos
Big Six
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Posted - July 14 2020 : 11:51:40 PM
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Also check to see if the motor block is bad and has swelled from zink pest it mat be pinching the axel.
Bill
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Posted - July 15 2020 : 04:22:45 AM
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Let us know how it goes. Sounds like
a big problem, but RP may have the
answer.
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Posted - July 15 2020 : 7:04:11 PM
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the thing I find that goes bad on these motors is the teeny weenie pinion gear slips off the shaft!
thats what happened to my UP C of SF loco & my CP Rail F7 
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Posted - July 16 2020 : 07:44:55 AM
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Yeah. And traction tires drying out. That lousy pinion
gear was a curse.
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Posted - July 16 2020 : 08:46:05 AM
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quote:Yeah. And traction tires drying out. That lousy pinion
gear was a curse.
Originally posted by Chops124Â -Â July 16 2020Â :Â 07:44:55 AM
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The entire powertourque was a curse!
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Posted - July 16 2020 : 2:31:09 PM
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| yeah Powertorque Motor is crap I admit it but I'm fixing them anyway hehe
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Posted - July 22 2020 : 09:44:00 AM
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I checked the screws on that plate, and they seemed good. It still would move forward. It would move in reverse, but it would run real choppy forward if at all, until it threw the safety relay on my Transformer.
I found a four dollar special Tyco Sante Fe F7 on 'the site'. It looks pretty good, but I think I'll try swapping motors with the E7A if it's not fried. I also may just sacrifice the headlight on the E7 and flip the drivetrain around. I'll figure it out.
Aaron Anderson
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Posted - July 22 2020 : 10:46:45 AM
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| I do that a lot, A-A-Ron.
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Posted - July 22 2020 : 7:26:18 PM
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Sounds like a plan. Keep us posted.
"Let your light so shine before men, that they may see your good works, and glorify your Father which is in Heaven." - Matthew 5:16
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