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    • April 10, 2020 10:36 AM EDT
    • Eric and Kid-Zilla: thanks for helping me think! Much appreciated! The chains are tough to make work with a truck, particularly if the truck can swivel. The way the original 1926 chain drive works is a small sprocket on the frame drives a larger one on the axle. Those are 2 of the reasons I gave up. Sad!

       

      Dan: Thanks. I am going to stay put for a while longer so that will have to wait...

       

      Cheers!

       

      [edited to correct bad spellcheck..what I get for posting from my phone I guess...]

    • April 10, 2020 10:17 AM EDT
    • Jim,  Both Workbench hardware stores in our town carry K&S Brass for modeling.

    • April 10, 2020 1:31 AM EDT
    • Jim,

       

      Kid-zilla and I are pondering this...What if you were to get a second set of wheels the same size as your powered drivers, mount them all in a brass sub-frame as mentioned above, then mount the lot to the underframe of the truck?  Your false chain drive would connect the two wheels, giving you a reason to have two, and some of the engineering and stability issues listed above - strength, stability, tendency to rotate about the axle - might be resolved?   It would also divorce the cargo frame area from the load bearing and driving problem, giving you time and space to tinker.

       

       

      Eric

    • April 9, 2020 7:59 PM EDT
    • Thanks Rooster and Rick...

       

      do not have that brass on hand so will need to noodle on it...

       

    • April 9, 2020 7:37 PM EDT
    • Jim,

      Have you considered a rectangular brass tubing to build the frame out of, it will solve a lot of the problems that are floating to the top.

      I have used this method on several scratch builds and it works very well. 

      Of course now you run into soldering issues if your not comfortable doing that.

      Just a thought.

    • April 9, 2020 7:17 PM EDT
    • Jim Rowson said:

       

       Worried that my frame is too thin for such an attachment but I have a cross brace that I can screw through hidden under the brass doohickey.

       

       

       

      I agree it is too thin as a stand alone but I was thinking that the model body screwed to the frame will give it more than enough strength however we did not get that far yet. I only answered you on how to make it removable and how I would approach it .  An automotive uni-body frame is a flimsy worthless piece of crap until you put the body on it . 

      Was thinking when you put the body on and attach it to the frame even with some 1/32 " brass pins into the 1/8" PVC frame I bet it would be stiffer than a wedding night rooster! However this is just my experience and sometimes one needs to think outside of the box.

      Now ...if the model body cannot be attached to the frame or it's (body) too flimsy then my thoughts are out the window. Only stating my approach from what I'm seeing from you're,your (spelin) pictures that you are graciously sharing and I'm certainly enjoying.

      Keep up the good work and badge it Amtrak when finished (any paint phase of you,you're,you are choice)!

    • April 9, 2020 2:10 PM EDT
    • Thanks everybody for the encouragement and ideas. I'm thinking more about how to mount this puppy.

       

      Pete: I had already figured out that it would try to rotate itself without a good solid mount. Clearly what I've done so far isn't good enough for that but I was working towards that kind of mount.

       

      John: Your advice is well taken. Thinking about how to make this be a separate, stiff module that can be attached to the frame. Would also help with Pete's advice.

       

      Rooster: I like your idea, with Rick's modification. Worried that my frame is too thin for such an attachment but I have a cross brace that I can screw through hidden under the brass doohickey.

       

      Again, your advice and ideas are really valuable to me. Thanks!

       

    • April 9, 2020 1:55 PM EDT
    • Just for info, here's a pic of the small Bachmann truck that is available from the Parts dept, if they ever re-open. I used it on the front of my railtruck. Those are small Bachmann 26mm wheels, and the curly spoke wheel was just there to be looked at. The bolts are holding the pickups in place and were trimmed.

       

    • April 9, 2020 1:49 PM EDT
    • I think your motor is hanging a tad low....

      Jim, these kind of drives need to be very solidly mounted so they can't rotate around the axle - which they will try to do instead of turning the wheels.  The attached pic shows a Fosworks drive, just like the NWSL (and also no longer available,) with the big plate that fit on the motor lugs to stop it rotating.

    • April 9, 2020 11:02 AM EDT
    • Make a sub assembly for the motor and Wheels. I think you are too dependent on your foam frame. I'd rather the frame merely hold it true to the track than holding moving parts in alignment.

      Combine that with Marty's reinforced frame ideas ...

    • April 9, 2020 10:49 AM EDT
    •  

       

      How easily removable are the motors in your locomotives?  

      Perhaps some disassembly required

      My thought would be to run a brass flat bar on the under side of the frame at your mount location and 

      through bolt the mount to the frame to reinforce the frame at what will be a stress point for the frame.

    • April 9, 2020 10:09 AM EDT
    • Even if it were removable, what are the odds of finding a replacement If it broke. 

      doc

    • April 9, 2020 9:41 AM EDT
    • Jim Rowson said:

      Eric: I would LOVE to make it removable, but I'm not so totally sure I know how to do it. I'll keep noodling at it. Thanks for encouraging me (I think?)...

       

    • April 9, 2020 12:02 AM EDT
    • Eric: I would LOVE to make it removable, but I'm not so totally sure I know how to do it. I'll keep noodling at it. Thanks for encouraging me (I think?)...

       

    • April 8, 2020 11:52 PM EDT
    • Jim,

       

      Based on a well-grounded lack of experience, I am all for making the motor removable and replaceable.  You never know where a good idea in concept might translate into a bad idea in practice!

      Eric

    • April 8, 2020 10:22 PM EDT
    • I hate it when my doohickey gets slonchwise (hmmm, I always thought it was slaunchwise, but who's counting? neither one passes spellcheck).

       

      Today was dingus day: building a little bracket to hold the motor at an angle. This is just the basic strap... I need to also add a piece to hold it firmly in place on top of the plastic tab that is obviously there to help hold the motor in place (I hope!). Not show here, I also added some trim to make the frame be parallel to the track (i.e. straight!). Waiting for glue to dry and have some screws and bolts on order so I can decide how I want to actually attach this firmly.

       

      Before I post pics, I have a question for this highly experienced audience: how much should I worry about making this motor be removable (i.e. replaceable)? Or should I just go ahead and make this a permanent installation?

       

      OK, pics:

       

       

      Happy stay-at-home!

       

    • April 8, 2020 9:36 PM EDT
    • Jim, I really like the looks of this build so far.  A rail truck is one of the few missing pieces of motive power I would like to have on the roster.  Watching with great interest.

    • April 8, 2020 9:34 PM EDT
    • Him, just make sure your doo hickey is not slonchwise, as my uncle  used to say. I once asked what slonchwise was and he said the opposite of antigoggling!!! Thanks Uncle Bill!

    • April 8, 2020 9:28 PM EDT
    • I know its been asked before, but I think its time to ask once again ..........

       

      Is the damn thing done yet 

       

      Heck, I leave for a few days and come back and WOW, you've built a mighty fine looking engine.  You can carry on.

    • April 8, 2020 6:51 PM EDT
    • Devon Sinsley said:
      John Caughey said:
      Korm Kormsen said:

      hmmm...

      i see, where the water can be filled in.

      but where do they fill in the oil?

      Maybe it's a hybrid and there will be a charging port

      Oh now hey there's an idea. The first Tesla locomotive

       

       

      Keep rolling along Devon....there is a whole bunch of detail nitpick stuff that could be added but not necessary. Focus on the overall look !