tomgeorge Member Member since Jan 2, 2009 Last active Jan 2, 2009 Total activities 0 Activity feed Recent contributions #Threads 17 years ago 17971145-dbe0-4932-a9d9-d717da435806 the cams can be replaced by different mechanisms.say we can use electromechanical,electro hydraulic,electro magnetic etc.informations can be found from Wikipedi...