Home Page › Forums › Modeling the Missouri Pacific, Texas & Pacific, etc › HO Scale › NewlyAnnounced Athearn SD40s. › Reply To: NewlyAnnounced Athearn SD40s.
Dan,
When mixing side frames, you HAVE to have one side as low mounts and the other as a hi/low. Not both sides as low mounts. For instance. this is one of the units I am going to be modeling http://www.rrpicturearchives.net/showPicture.aspx?id=1869765. The rear trucks is hi mount on both sides. The front left as you can see is a hi/low mount. The other side of the front truck (right side) is low/low mount only. Look at the clasp and slack adjuster between the first and second wheel. The low mount brake cylinder is between the second and third wheel. Now if you are modeling a unit that has high mounts on the front and hi/low on the rear, then the hi/lo side frame would be on the rear right and the low/low would be on the rear left. No exception to that rule.
And being the stickler that I am, it is not just an easy add a hi mount brake cylinder. The clasp is different also and the the single low mount brake cylinder is turned around.
Brian
