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Drag Track Model

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Drag TracK Model



Go to the RDC Drag  Track Model

This is one of the most powerful DC power supplies in the World. Suitable ONLY for 16.4 volt Slot car track use.  DO NOT, UNDER ANY CIRCUMSTANCES, CONNECT TO ANY BATTERY!

Click Here to go to the Drag Track page

This power supply is designed, and built for, the extra voltage that Slot Car Drag Tracks need!  Voltage output without the voltage plug installed is 14.1 volts! At this lowest setting it is STILL TOO MUCH to connect to a 12 volt lead acid battery ...  Doing so will over-charge the battery and can cause it to EXPLODE.  Most slot car tracks actually use this power supply with the voltage boost plug installed which raises the voltage to 16.4 volts for Drag Tracks.  This higher voltage gives the drag track noticeably better et's.  It is internally capable of slight voltage adjustments, but only by taking the cover off and adjusting a small pot.  Do so at your own risk!  Never remove the cover with the power plugged in!

Capacitors: General Recommendations;

We Recommend the "Hydra II" Super Capacitor that we offer.  It is designed to work with this power supply and will provide all the reserve power you will ever need. There is no other capacitor like it anywhere.

You must also use extra caution when you connect a capacitor to this power supply.  We recommend large capacitors be rated for 18 volts.  and NEVER MORE THAN TWO CAPACITORS.
Click here to see a diagram of correct capacitor connection.

Because voltage spikes caused by the sudden start of a race can exceed the voltage output of the power supply for a  few milliseconds.  This spike comes from the coil windings in the electric motors of the cars themselves, not from the power supply.  Its called reverse emf and is well documented in the world of electronics.  If you want reliable performance, use only a high quality capacitor with a voltage rating of a minimum of 20 volts or higher (recommended).  If the capacitors you are looking don't have a voltage rating, do not buy them.  If they do, try to ask someone who has used that brand before and see if they are reliable.

Why no Batteries?
This power supply voltage is too high for connection to any kind of battery bank, even at its lowest setting of 14.1 that is higher than ANY (continuous) battery charger.  Lead Acid batteries are fully charged at 12.8 volts and fully discharged at 10.2 volts.  Most modern chargers put what is called a "service charge" of 13.2-13.8 volts on a battery.  This actually overcharges a battery but is considered ok because in most cases the battery is under a load and in order to maintain 100 percent charge the batteries are actually charged at a slightly higher voltage.  This is for several reasons which is too detailed to discuss here.  But, suffice to know that if you continue to charge batteries with too high a voltage the life of the battery will be shortened.  Our regular power supplies actually shut their charge off at approximately 13.2 volts and resume charging when the voltage drops to 12.8.  This maintains a full charge at all times so the battery is always ready for full service. (This is the same method that a car alternator system uses) But the RDC90 Slot version is putting out far too much voltage, even at its lowest setting.  If you connect a lead acid battery to the slot model, it will start to immediately over-charge the battery, and if left connected, it will cause the battery to boil internally and produce flammable gasses.  These gasses will escape and create a fire hazard that a single small spark can ignite which will cause an explosion that can cause severe damage and even loss of life. And sometimes the spark happens inside the battery from too much heat that causes the internal plates to warp and touch which shorts out the cell and causes a spark. (Boom!)  So PLEASE, DO NOT CONNECT THIS POWER SUPPLY TO A BATTERY !


Model RDC -90Slot
Input Voltage 90-135
Input Frequency 40-70 HZ
Output Wattage  1210 Watts
Output Voltage DC 14.1-16.4 volts - 16.4 w/plug installed
Output Amperage 90
Dimensions (Width X Height) 6.75 x 3.5                   
Length  13"
Weight 8 Lbs.
Fan  2 Thermostatically controlled

Prices include shipping in the lower 48 states of America.