03-10-2012, 06:00 PM
Well, the Mogul has 63" drivers, while the 5107's are 69", but that's not an unreasonable disparity with real steam. It's up to the engineers to balance their throttle and valve gear adjustments to suit. On the other hand, if both those models had identical motors and gearboxes, running them together on a DC-powered layout might cause problems. 
There are quite a few photos of Moguls and Mikes together, and even with similar-size drivers, there's quite a difference in their haulage ratings: 26% for the 91 and 50% for almost all CNR Mikes.
Wayne
There are quite a few photos of Moguls and Mikes together, and even with similar-size drivers, there's quite a difference in their haulage ratings: 26% for the 91 and 50% for almost all CNR Mikes.
Wayne