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Using A Double Mainline Pulling 20 Cars
Allan models O Gauge and posts this question for readers:
“What is the best incline for a double mainline using a total of 20 cars including the engine? Also, can a double slip crossover be made using Lionel Fastrack?”
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If you are trying to get 20 cars, plus trains up a grade with two locos, then 4% rise usually works OK. Getting over 4%, train length and power needed to pull said trains is really a factor. As an earlier poster said, real RRs avoid grades like the plague for the same reasons…………….
BTW a double slip is actually two left hand or two right hand turnouts fitted together. It’s fun to try out and it’s the principle of how double slips are operated.