Slot Car Gear Ratio Calculator

drag slotHi Bill, Hot Rods look cool, drag cars look even better!!! Meant to say, have a look at this link: Eurodragster article CheersReplacement power transistor for drag modules and controllers. New 3 transistor desn has 50% more power handling capacity then our old desn. Instructions included. $22.50. DD839: Drag Power Transistor. Repair kit for the 4 transistor