Thursday, July 2, 2020

A new brand of turnout motor

Well, new to me anyway.  A friend recently introduced me to a brand of turnout motor that I had not hear about before.  These MP5's are slow motion motors that run on AC or DC, and 2 sets of double pole contacts.
This photo shows the comparison between one of the existing Tortoise motors on my layout and of of these new MP5 turnout motors.

Another feature I like about these is that the wires are connected to a removable plug which would make things easier when working under a layout.
I have been testing these motors out with some new Peco turnouts.  Using the stock rod that comes with the turnout motor, the movement is strong enough that there was no need to remove the over center spring in the Peco turnout.  On other types of turnouts I would use a more flexible wire linkage.

The turnout points need to move about 3mm.  The amount of movement on the motor the way it came was too much so I needed to change it from the stock 6mm to 3mm.


After removing the two screws on the bottom, the bottom can be hinged open and the slider part removed.

The cam inside rotates a half turn with voltage in one polarity and then another half turn in same direction when voltage is reversed.  If the cam cannot continue it's rotation because it has reached the stop on the turnout, it cannot be reversed by reversing the polarity.




A pin on the cam fits into a slot one the slider and the rotation caused the slider to move.  The holes on the cam are at 3, 6, 9, and 12 mm from the center of the cam which correspond to how much the slider will move.  The pin is installed at the 6 but can be pulled out and moved to the 3 for N Scale turnouts.




These seem like great little turnout motors and they cost about the same as a Tortise motor.  The small size makes them great for modules or layouts with shallow frame bench work.  They are made in the Czech Republic by MTB Models and are sold in the US by Model Railroad Control Systems.

6 comments:

  1. I model TT (120) scale also, known about these for a few years. You can get them at https://www.tt-west.com/all-scales in San Leandro, CA.

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    1. Thanks Dwyane. Didn't realize they had been around for that long. Looks like they are out of stock so if you need more you can try this other place. They shipped to me in 1 day but they are in my town.

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  2. Yep been using these for a while Brad a good friend brings them in from Europe and many mates are now using them. We have had difficulty adjusting them for my Fast Track roll your own turnouts. It seems that the throw has been designed for HO and N Scale so a bit of fiddling and using flexible wire has helped. We started with MP1's and now MP5's.

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    1. Hi Rod,

      Yes, I was thinking the same thing if I use these on the Fast Tracks turnouts a more flexible wire would be required. No over center spring on those like on the Pecos.

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  3. I have about 80 on my layout and they work great with my hand laid turnouts. A bit of experimentation in terms of wire thickness for the throw wire as the hand laids are a bit stuffer. The MP5's are very reliable.

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    1. Hi Brendan,

      Thanks for the positive report on your large installation of these, good to know.

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