totally opposite, man

来源: ansy 于 2010-07-12 19:54:14 [] [旧帖] [给我悄悄话] 阅读数 : (271 bytes)
回答: 军用越野车连前轮都是鼓刹 由 triangle 于 2010-07-11 11:23:05

semi truck one drum weighs ~110 lbs, rotor ~70 lbs, which is a better heat sink? new government regulation coming out requires shorter stop distance for heavy duty trucks, so truck industry is transiting from drum brake to rotor brake, which should tell you which 力度大

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