Traction Tires for Diesels and Electrics?

[Tom]

After thinking about it today, I think if you added traction tires to an Atlas model, with as powerful a motor as they have, you would likely spin them off the wheel while climbing a grade. IIRC, Rivarossi engines that had the traction tires had a groove in the wheel to accept a traction tire.

In the real world, out here in California at least, an Amtrak F59PHi is only good for six or seven cars before they add an extra unit. And our trackage is all FLAT on the San Joaquin runs, but it is 79mph most of the way, so, is it possible that a prototype AEM7 can only pull as many coaches as your model up that grade? I really don't know as I only ever worked with F40PH's, P40 and P42DC's, B40-8Wi, and F59PHi's. You might just have to cut your losses and add a second unit I'm afraid. :?