Hi Mr.V
What sort of big power 24th scale cars are you talking about?
Group 12 motors (like they use in the BSCRA and ISRA 1/24 saloon, BSCRA 1/24 open group 12 and BSCRA 1/32 saloon class) need about 10 amps per lane.
Thicker gauge strap motors (like they use in the BSCRA and ISRA 1/24 and 1/32 Eurosport classes) need double that.
(Group 7 wing cars take even more, but this class is very little used in the UK)
Tracks that use power supplies with digital current meters show these values are about right although I'm told more accurate measurements have been made.
Clubs that use considerably lower amps than that can only run lower current motors.
On commercial raceways it is common practice to use a circuit breaker in the brake line. This is a particularly good idea to protect tracks where controllers are plugged in with three separate plugs or croc clips, so there is a risk of a driver plugging in wrong and shorting out the power supply. As this circuit breaker is in the brake line it is not taking the full motor current, so they often have a current rating considerably lower than full motor current.
What sort of big power 24th scale cars are you talking about?
Group 12 motors (like they use in the BSCRA and ISRA 1/24 saloon, BSCRA 1/24 open group 12 and BSCRA 1/32 saloon class) need about 10 amps per lane.
Thicker gauge strap motors (like they use in the BSCRA and ISRA 1/24 and 1/32 Eurosport classes) need double that.
(Group 7 wing cars take even more, but this class is very little used in the UK)
Tracks that use power supplies with digital current meters show these values are about right although I'm told more accurate measurements have been made.
Clubs that use considerably lower amps than that can only run lower current motors.
On commercial raceways it is common practice to use a circuit breaker in the brake line. This is a particularly good idea to protect tracks where controllers are plugged in with three separate plugs or croc clips, so there is a risk of a driver plugging in wrong and shorting out the power supply. As this circuit breaker is in the brake line it is not taking the full motor current, so they often have a current rating considerably lower than full motor current.
