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Thread: Motor selection for a scratchbulit loco's

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    Default Motor selection for a scratchbulit loco's

    This is more or less directed to @victor miranda.

    I need help deciding on a good motor for a steam loco kit. I'll be using Kato mike drivers and other parts for the chassis, so would the mike motor be good enough???, or should I look for a coreless motors. I'm not ready to say what the first kit will be just yet. I can turn a flywheel once I decide on a motor.



    The process that I'm going to try to make some kits.
    Draw the all the chassis parts up in CAD and print on one of the Photon's
    Take the prints and make a spincasting mold, providing the prints will withstand the pressures (2500 lbs) and temp (375 F degrees) of vulcanizing. I've read that the resin I'm using does, but haven't tried it yet. Once I have the chassis that runs flawlessly, I draw up the boiler shell and details and print them to fit the chassis. There is a all wheel pickup tender available for the first one I want to try.




    Motor I'm looking at


    https://www.ebay.com/itm/Micro-10-20...72.m2749.l2649






    Also I have a 8 old style RR bigboys that have the weak round motors that I want to replace.
    What is you opinion on these motors for them???


    https://www.ebay.com/itm/10-pieces-0...kAAOSwC-5d0~rb





    Thanks
    Rodney

    Here is my build of my n-scale railroad
    https://www.nscale.net/forums/showthr...-50-8-quot-%29

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    hi Rodney,

    yer killin me...

    I'll send you a PM you will want some answers to not be public
    mostly because some of why you make decisions for a kit
    are hard to explain while you are trying to decide.

    when I power my own projects, I usually look for sizes that fit first.
    then details like dual shafts for things like the RR challenger.
    then 12 volts.
    then price.
    usually this gets me a limited set.
    then I check power claims...

    have you considered this motor?
    https://www.ebay.com/itm/7mm-x-16mm-...gAAOSwCPZb2z1T

    my go to motor has been the Kato 4 wheel trolley motor.
    found in the 11-104 and 11-103 units.
    the 11-109 units are a very slightly cheaper way to get the Kato 12 volt motor.
    so far I have found Kato's FEF motor to be powerful.

    I would expect the 10mm by 20mm motors to be more than enough power for any project.
    thus I'd try one with 8mm diameter if I could find a 12 volt version.

    victor

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    Thanks for your response, Victor



    I like the the RPM of the motor that I posted the link of. It may be overpowering, but it should have great slow speed performance and I have the room for it.





    I like the Mabuchi motor that were in the later RR bigboy's and the challenger's, but it'll take some work to make them work. I'll look to see if I can find some that are double shaft.


    I happen to have 4 Kato 11-105's that I bought about 25 years ago, and 2 11-104's that was bought about 15 years ago. I was thinking these have the either 3 volt or 6 volt motors.


    The double shaft that is in your link will work if the overall length is long enough to be almost drop in. On the plus side, there would be enough room to add a decent size flywheel. I'll do some more investigating and see what works.
    Rodney

    Here is my build of my n-scale railroad
    https://www.nscale.net/forums/showthr...-50-8-quot-%29

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    As I'm doing CAD work on the first chassis and figuring the pitch diameter centers of gears, I use a gear calculator by W M Berg Inc. Thought some of you might find it helpful. It's very simple to use. I've used it to find what the pitch of a said gear by measuring the OD and number of teeth. I have to try 2 or 3 different pitch's before I find the right one, but it works.



    https://gearspec.software.informer.com/download/
    Rodney

    Here is my build of my n-scale railroad
    https://www.nscale.net/forums/showthr...-50-8-quot-%29

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