I line the rail tabs with the standard rail tab holes. This means the motor, gears, axles, wheels & tires are all kept stock artin. Artin Narrow Lanes Racing Slot Race Car Track Set Ferrari Lamborghini For Parts Dog Adoption Senior Dog Slot Car Sets 1n4007, about$0.1 (why artin uses 1000v diodes in there, i can't figure out, but since they are so cheap ☺) • capacitor: Artin slot cars any good . These also sold in europe under the artin racy brand. Are in good cosmetic condition. I first tried both nascar cars, they went smooth and fast, but i had a problem, they used to jump after the lap counter. Seller 99% positive seller 99% positive seller 99% positive. One of the main reasons for this is that availability of track and parts has been difficult at best. Artin cars can be a very mixed batch, some good some bad. Are in good cosmetic condition. I think you can say that with artin cars it all depends on the quality of the wheels and tyres, if they are good ...