Although the flywheel effect is minimal with the smaller capacitors, no trailing car is needed, and the benefits are worth the effort. Running is very smooth and some track problems are eliminated. Depending on the physical size of the capacitors, values can be increased for a better effect. Yes, they barely fit, but take your time to carefully arrange the wiring! Two 470 mfd, 35V electrolytic caps in parallel were used. Try to fit as much capacitance as possible into the tiny space inside (notice the blue capacitors in the photos below). When operated on AC, the handcar will now run faster than before, so a power resistor (10 ohms, 1 watt or better) may be added to the lead coming from the center rail wiper into the rectifier (or use the lowest throttle setting from the transformer). Or run the handcar on DC when you can, for the usual speeds. Be sure to connect these polarized capacitors correctly or they will explode! Protect eyes, face, and fingers while testing all circuits!
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