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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>IMHO the basic issue with advanced drum brakes is complexity (i.e. cost). <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Late ‘50s early ‘60s Alfas had aluminum alfin drums with diagonal fins with cast-in steel liners and cast aluminum triple-leading shoes. That’s 6 cylinders on the fronts alone.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>The ATE discs Alfa and Porsche adopted provided equivalent or better stopping power at less complexity and cost. I heard later Porsche’s reason for going with discs was cost.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>As a side note, In the ‘70s, Phil Hill said the drums on Grand Prix cars would go away part way through the race; in combination with burning up 60 gallons of fuel in a rear tank, this made for pretty interesting handling.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>--<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Steve Gerow<o:p></o:p></p><p class=MsoNormal>Altadena, CA, USA<o:p></o:p></p><p class=MsoNormal>BN6<o:p></o:p></p><p class=MsoNormal>Check out my galleries:<o:p></o:p></p><p class=MsoNormal>http://www.pbase.com/stevegerow/<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>