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Author Previous Topic: Can anyone recomend a restoration guy? Topic Next Topic: Stumped 1  

Chops124
Big Boy





Penn Central Logo

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 Posted - October 24 2017 :  07:41:44 AM Link directly to this topic  Show Profile  Add Chops124 to Buddylist
quote:
Also, the bottom of the motor has a couple of bent contacts that need to touch the chassis. The chassis should have a portion stripped of paint so that electricity can flow to the motor.

Originally posted by Redwoods - October 19 2017 : 8:28:42 PM



Yep! to this. That bottom of the motor contacts to the frame is key to getting the motor to run, when everything else has been installed properly.
frank


It also appears that the entire chassis of the dummy is coated in a thick black laquer. It will conduct, but
poorly. This laquer also prevents the bottom motor contacts from conducting from the chassis. Moreover,
the black laquer also prevents the king pin from transmitting juice. So I've got a double barrier on my hands.
Also, that connection between king pin and chassis is performed by the lightest of pressure, and I wonder
even if the king pin plate is even touching the chassis or if it is separated by the thinnest of margins.

I am thinking my best option is to do what Justin suggested, and run wires directly to the motor- if I can do this without melting the gear box with the soldering iron- which is something I would probably excel at. It's all
or nothing.

Ken was right about the dummy wheels- even though the truck is the standard power pick up truck, the
wheels are plastic throughout.

One other odd discovery: only one side of the powered trucks are actually powered. The other side are free spinning. Thus, one had four wheel drive divided between opposing halves of the front and rear trucks. The wheels are held in merely by press fit side frames.

Hopefully I can reassemble all this.
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Redwoods
Big Boy


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 Posted - October 24 2017 :  4:04:01 PM Link directly to this reply  Show Profile  Add Redwoods to Buddylist
There is an old book that you might check out called Model Railroading with Athearn Locomotives and Cars that has pretty good run down of how to maintain, disassemble and tune up Athearn blue box locos.

https://www.amazon.com/Model-Railroading-Athearn-Locomotives-Cars/dp/0961269235

You can get a used copy for under $10.

Just keep working at it, you'll be an Athearn loco expert in no time.

- Thomas
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toptrain
Moderator




On Pingynp

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 Posted - October 24 2017 :  6:34:21 PM Link directly to this reply  Show Profile  Add toptrain to Buddylist
Drill a small hole in the frame. Find a screw that will tap into it. Fasten a wire to the screw and solder the other end to the brass brush spring holder on the bottom of the motor. that is how you fix an Athearn motor that won't pick up power from the frame.
frank

toptrain

" It's a Heck of a Day " !!!
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Chops124
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 Posted - October 24 2017 :  10:22:59 PM Link directly to this reply  Show Profile  Add Chops124 to Buddylist
That sounds like the ticket, thanks!
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offtrackthoroughbred
Little Six

Ice Bandit

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 Posted - October 29 2017 :  2:50:23 PM Link directly to this reply  Show Profile  Add offtrackthoroughbred to Buddylist
For motor to chassis I use a small flat blade screw driver to make the frame shine; then add graphite and assemble. For truck to chassis I use brass wool to shine the frame and truck contact; then add graphite and assemble.
Good luck! OTTB
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Chops124
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 Posted - October 29 2017 :  6:01:52 PM Link directly to this reply  Show Profile  Add Chops124 to Buddylist
Thanks, Ill do that!
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RP model railroads
Big Boy



DOUBLE NICKEL55

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 Posted - October 29 2017 :  6:17:04 PM Link directly to this reply  Show Profile  Add RP model railroads to Buddylist
How's the Conrail Switcher re-motoring working??? Sorry I couldn't be of much help, for I honestly have no experience with re-motoring a dummy.
"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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