Multi-Engine Pulling Order - What's Best?

In my particular case, I am talking about a new 4 engine Kato F3 lashup pulling the California Zephyr. Each of the two A units and two B units are powered. When I first set up the track and ran the trains I found that while close, some were a little faster than others. Does it really matter if the fastest or slowest A unit is first in actual use in respect to unequal loads being put on a single engine?

Thanks in advance for any advise.

Barry Simon

Well to me it always seemed to work better to have the faster engine first to keep the couplers taut. But I don’t know if it makes a great difference.

<> p.s. I’m assuming you’re running in DC?? If you’re in DCC you can use the speed and momentum CV’s to speed match the units so all 4 will start, stop and run together pretty much perfectly.

This is a major problem in N scale where nothing is the same speed and that speed varies GREATLY from one manufacturer to another. I have resigned myself to the fact that there are certain engines that can’t be run together no matter what. Never had this much of a problem in my HO days.