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Thread: improvments for an Atlas/RR Pacific

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    Default improvments for an Atlas/RR Pacific

    the video is like watching paint dry.
    https://youtu.be/LhHrnt2aiIQ

    I built this loco over the past year
    and it has had some re-iterations.

    it has a replacement chassis and a kato 5 pole trolley motor and a flywheel

    the tender has an all wheel pickup in it and I made a drawbar like a kato mike
    there is no pick-up on the loco.

    I want a reliable Pacific.
    in my testing, it is reliable.

    overall it has a better motor and better chassis.
    the pick-up solves the reliable operation problem

    what I can't say is that it is easy to build.
    the chassis is three pewter castings and the motor mount and drawbar post are made of PC boards
    the pcboard parts are not well thought out.
    I have to think up a better way.

    the tender is easier...
    frankly, using a bachmann allwheel pick-up tender is the best solution.

    I have a number of Atlas Pacifics. They failed for various reasons over the years.
    I wanted to put the loco parts to use.
    one of the issues here is that Kato makes allwheel pick-up wheel-sets
    and these were purchased to go into the Atlas tender trucks

    If you have a couple of tenders to do you can cut the extra atlas wheelsets
    to make Kato style wheel sets...
    These will not fit code 55 trackwork however.

    Effort and time and money all taken into consideration,
    a re-motored Model Power Pacific attached to a B-mann tender is a good option.

    The gear ratio of the Atlas/RR pacific is the only problem left to solve.

    a beauty shot.
    atlas-rr-462.jpg
    Last edited by victor miranda; 21st Mar 2018 at 09:04 PM. Reason: fixed a typo and a wordy sentence

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    this is the loco and one iteration of the tender.
    the idea for the tender is the same for the pickups

    I added an electrical drawbar to the loco in place of the wires

    a possibly recognizable photo:


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    Very nice work there, Victor. I have an older Atlas steamer that needs some pro work because it sure was beyond me. Some day, maybe.
    Daniel Dawson

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    As a fan of A1G (my site), Victor, I like it.

    Doug
    Atlas First Generation Motive Power and Treble-O-Lectric. Click on the link:
    www.irwinsjournal.com/a1g/a1glocos/

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    Hi Mobile one,

    so some extent what you have determines what you need to do.

    If you have a good frame and just need a motor, that trolley motor is a good option
    and can be installed, believe it or not, that is fairly easy.

    the tender was done with hand tools...
    If a motor tool and a soldering iron are hand tools...

    the conversations I get into often ask how can I do that?
    .... my work on Locos has often been getting tools to help do things
    like pull gears and cut/grind motor shafts.
    that is the 'how' for a lot of the work.

    where my heart led me may be why I did this.
    It is more grim determination than anything special.

    there is nothing here that could not have been done 40 years ago
    if any one had decided to do it.

    what I am chasing is a loco that is reliable and easy to keep running.

    hidden in there is that most locos are made to be cheap to assemble at the factory.
    the thought that one must lubricate? is not considered.

    the atlas/RR stuff is almost great.
    The tender with the archbar trucks (the second and older photo) was given a trial behind
    a couple of re-motored Atlas/Rr locos. It was hard to make so I have tried other ideas
    that seemed easier to make.
    the performance of the re-motor engines was impressive.
    enough that I felt it worth giving this another attempt.

    I have a MP Pacific that runs as good as one can expect ANY loco to run.
    and I hate to get in there to clean and lube. so it fails some aspects of easy to maintain.
    this is in complete contrast to a kato J3 Hudson. (or an atlas/RR)

    I will give you more help than you might guess for fixing your loco.
    you will have to do the work. and buy some parts from some where.
    and almost all is rather easy.
    ... or I will re visit my idea of easy.

    victor
    Last edited by victor miranda; 23rd Mar 2018 at 05:59 PM. Reason: extra blank lines removed

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    Quote Originally Posted by Doug Gosha View Post
    As a fan of A1G (my site), Victor, I like it.

    Doug
    I so wish the operator of RivaRossi had some notion that he could have been remembered
    for being an N-scale Great. 50 years later and the shells are still pretty good.

    It seems RivaRossi decided that gig didn't pay well.
    So that top Honor goes to Mr. Kato
    His company is still thriving. (I hope!)

    victor

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    If only Senor, Alesandro Rossi wouldn't have cheaped out on some parts, most notably the commutator form in the can motor, the Rivarossi steamers would have been/be even better than most admit they are.

    The gears/wheels are pretty much indestructible and they did improve the motor in a relatively short period of time but the early ones could not take much of a load at all without overheating and melting the commutator. I have rebuilt many of the original motors, using epoxy in several places, and they run without problems now.

    Doug
    Atlas First Generation Motive Power and Treble-O-Lectric. Click on the link:
    www.irwinsjournal.com/a1g/a1glocos/

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    It is odd to attempt to give credit where it is due.
    and don't you fear I'll give that RR motor its due later...

    for the price charged for the atlas/rr pacific (I acquired the 0-4-0 and mikado much later)
    I think it is (ok 'was') a darned good value.
    A good and well detailed shell and easy to clean and maintain.
    these qualities are where I think the Atlas/RR locos are great

    For what would have been very little more expense, and I mean that very and little,
    the loco could have been robust. just improve the motor...
    and you need to give that rubber magnet more credit for roasting armatures.
    those commutators melted because of that incredibly cheap material.

    the trolley motor I am using is 'better' If for no other reason simply because it has good magnets.
    I set those same magnets into a RR can and used the original arm just to prove that point to a friend of mine.

    I will avoid further digressions...
    it is often surprising how one can avoid becoming great.
    so close and so far...

    the bright side is that without 0-8-0s and pacifics
    I would not have had the chance to learn so much about building locos.

    victor

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    Since this tender pick-up is expected to go under a RR heavy Pacific
    I decided to add it here
    this is the truck I picked for this experiment
    tender-truck-3axl.jpg
    and this photo shows all the parts
    3axl-pickups.jpg

    examine the photo a bit and you should be able to figure out how to do it.
    the phosphor-bronze is the .008 one can buy
    and the wheels sets are the 33 inch from Kato

    I had to dig the pockets of the trucks to allow the wheels to roll freely and move up and down a bit.

    my next set of pickups will be a bit taller as I had a hard time testing that truck.

    I have to sort out how to set the tender floor for this pick-up.

    victor
    Last edited by victor miranda; 16th Apr 2018 at 03:24 PM. Reason: removed the double photo

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    over the weekend I received some gears from Gizmo-zone.


    and I spent some time examining how to fit a gear reduction into the chassis.
    ... I can do it if...
    I move the gears in the loco over to either side. They are close to centered in the frame


    Since I am building the rest of the gear-case/chassis, I can rearrange the gears.
    Moving the gears on the driversets is a good deal of effort.
    at that point I am building a new mechanism.
    mostly because I'd be making axles/driversets any way I want
    and I may as well do the vertical split frame because the re-made axles
    can be isolated... the benefit being I get additional wheels doing pick-up.


    and then... well, the project goes from simple to complicated
    and I may as well use all plastic gears and soon enough the project will be done.
    Then I have a loco that was a lotta work that looks exactly like the Atlas/RR Pacific.


    the MP Pacific, on the other hand, has the gear work done.


    If you want an excellent Pacific type,
    the effort to improve The MP version looks like the easier path.
    just replace the motor... why am I laughing? and upgrade the tender.


    If you have an Atlas/RR pacific...
    the tender upgrade and motor upgrade are, in my opinion, worth doing.


    the replacement chassis is also my idea of worthwhile.
    should you have an Atlas/RR pacific that is special to you.


    victor

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