Thought you might like to see how Aurora did it in the 60's. The rear wheel had a gear in the center, rubber on each side that straddled the slot. The pickup shoes worked as an outrigger. Pretty much a standard thunderjet motor, bigger plannetary gear.
As you can see, they didn't worry about scale ...(HO) either. In fact it looks about 1/32.
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As you can see, they didn't worry about scale ...(HO) either. In fact it looks about 1/32.
