Electrical (power) Standards For Competition
1:24 racing is usually at 14 volts for qualifying and 12 volts under racing conditions. 1:32 racing is between 12 and 16 volts depending on type of car. Most HO rules require tracks to provide voltage between 18.5 and 19.0 volts, and at least 5 amperes per lane. Certain European 1/24 "scale" racing events use 18.2 to 19.0 volts DC.
Many tracks use banks of lead-acid batteries to produce sufficient high amp DC power, but in recent years, relatively inexpensive high-quality electronically regulated power supplies have become more popular to achieve consistent and clean power.
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