Info needed for a motor for a MDM F7 truck

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johngraser
Posts: 33
Joined: Tue Aug 20, 2013 11:21 am

Info needed for a motor for a MDM F7 truck

Post by johngraser »

Anyone know the model number and manufacture AND rpm for the motor on a MDM F7 truck.

My motor has a broken winding wire.

John
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makinsmoke
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Joined: Thu Jul 10, 2003 12:56 pm
Location: Texas Hill Country

Re: Info needed for a motor for a MDM F7 truck

Post by makinsmoke »

Hi John,
Pull the truck and remove the motor (if you haven’t already done it), take to a shop and have it repaired.
Starter/generator/electrical motor shops can do it.

While it’s out maybe they can find out the info so you can buy a spare.

Take care,
Brian
johngraser
Posts: 33
Joined: Tue Aug 20, 2013 11:21 am

Re: Info needed for a motor for a MDM F7 truck

Post by johngraser »

Being trying to find a shop to do it, so far none will do it.
johngraser
Posts: 33
Joined: Tue Aug 20, 2013 11:21 am

Re: Info needed for a motor for a MDM F7 truck

Post by johngraser »

Anyone suggest a replacement motor.

The motor I have is:
24Volt
Around 25Amp
4" diameter
5 1/4" long
5/8 inch shaft
mounting holes 3 3/8" apart
Bob D.
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Joined: Thu Jun 21, 2012 10:43 pm
Location: Saco, ME. USA

Re: Info needed for a motor for a MDM F7 truck

Post by Bob D. »

Nearly three years ago you posted here about your F7. Someone posted a link to the successor of MDM. Have you checked with them about a motor? They have probably upgraded the drivetrain. How many motors do you have? They all need to be the same. If a single replacement is different you'll have problems.
Check with Pike River Northern.
3/4" Juliet II 0-4-0
3/4" Purinton Mogul "Pogo"
3/4" Hall Class 10 wheeler
3/4" Evans Caribou/Buffalo 2-8-0
3/4" Sweet Violet 0-4-0
3/4" Hunslet 4-6-0
3/4" Kozo A3. Delayed construction project

1 1/2" A5 Camelback 0-4-0
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Atkinson_Railroad
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Re: Info needed for a motor for a MDM F7 truck

Post by Atkinson_Railroad »

The IBLS site has a You Tube link showing a permanent magnet motor with a name-tag.
http://ibls.org/mediawiki/index.php?tit ... ks#Archive

Link to You Tube Video showing nameplate: https://www.youtube.com/watch?v=RySkAOGkp1I&t=8s

I’m not able to read the specs on the tag, but one can see the motor is identified with a model number, etc.
This would indicate the motor was produced for a product of some kind somewhere.
Others chiming in on this topic are correct. Either the single motor must be repaired, or all other motors must be replaced with identical units.

Re engineering an entire locomotive traction system because a broken wire cannot be repaired seems kind of…
Then again… I’m someone that would be guilty of such a thing.
Strive to fix/correct the motor if at all possible.

John
Pontiacguy1
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Location: Tennessee, USA

Re: Info needed for a motor for a MDM F7 truck

Post by Pontiacguy1 »

The amps and voltage suggests this is a 450 to 500 watt motor, depending on the efficiency of it.
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cbrew
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Location: Vancouver Wa

Re: Info needed for a motor for a MDM F7 truck

Post by cbrew »

John, send me a picture of the motor, those dims are really close to the motors i use
If it is not live steam. its not worth it.
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