Sicer sem prebral tekst ampak ne stekam cist dober. Torej, o cem se gre in kaksni skripci so to??
http://img.sportruck.com/howto/pullies.jpg
Underdrive pullies usually consist of crankshaft and alternator pullies. These increase horsepower by reducing accessory drag. Pullies can benefit almost any engine, large or small. Installation is a snap, but there are a few disadvantages to underdrive pullies. Because the alternator is turning slower, it won't be able to produce the current needed to keep the battery charged when running at idle. If you leave your truck on idle for extended periods of time, you may want to only install the crankshaft pulley. An underdrive pulley set can add up to 15 horsepower to your engine and can also improve fuel economy.
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LP
Kennman