MTB SW Locomotive Motor Refit

Re: MTB SW Locomotive Motor Refit

Postby AstroGoat760 » Sun May 20, 2018 9:01 pm

The second MTB SW chassis refit has rolled off of the line:
IMG_2337.JPG

Details on how this went together will be coming forth soon.
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Re: MTB SW Locomotive Motor Refit

Postby AstroGoat760 » Sun May 20, 2018 9:31 pm

The first step for the refit, as far as prepping the new motor for the chassis is to shorten up the shafts to match the stock motor:
IMG_2339.JPG

The stock motor shaft is roughly 38mm in length:
IMG_2340.JPG
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Re: MTB SW Locomotive Motor Refit

Postby AstroGoat760 » Sun May 20, 2018 9:35 pm

Next, install the universal joint cups and the power leads:
IMG_2345.JPG

IMG_2348.JPG
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Re: MTB SW Locomotive Motor Refit

Postby AstroGoat760 » Sun May 20, 2018 9:46 pm

With this loco, I opted to use a few drops of CA and accelerator to fasten the motor to the chassis.
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Re: MTB SW Locomotive Motor Refit

Postby AstroGoat760 » Sun May 20, 2018 9:50 pm

And the end result for loco #2:
IMG_2349.JPG


Are there any parts that I should go over in more detail?
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Re: MTB SW Locomotive Motor Refit

Postby MacG » Mon May 21, 2018 1:44 pm

This is a good idea to change a broken MTB motor. There is also room for additional weight or a second flywheel. Why have opt you to don't use the original PCB?
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Re: MTB SW Locomotive Motor Refit

Postby AstroGoat760 » Mon May 21, 2018 4:08 pm

MacG wrote: Why have opt you to don't use the original PCB?

Simple answer: I did not want to deal with the boards right away, I just wanted to make sure that the motors indeed work out, and THEN I will try to fit the boards back in place.
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Re: MTB SW Locomotive Motor Refit

Postby AstroGoat760 » Tue May 22, 2018 10:14 pm

Well, the test article loco has been running for 3 days now, with only brief stoppages for inspections and an oiling.

No issues to note as of yet.

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Re: MTB SW Locomotive Motor Refit

Postby AstroGoat760 » Thu May 24, 2018 9:29 pm

Well, a slight setback today: the third selected replacement motor has developed a bad bearing. I think I put too much force in installing the flywheel as it was just fine and tested fine before having the flywheel added.
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Re: MTB SW Locomotive Motor Refit

Postby AstroGoat760 » Thu May 24, 2018 10:18 pm

Here is Motor Zero, being installed into a SW1200 (Former Possum Central Railroad - new name TBD):
IMG_2355.JPG

Note the swapped direction of the motor in relation to the flywheel.
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