Hypoid gears are differential gears where the pinion is not centered on the ring gear. The hypoid configuration allows for a higher clearance from a centered ring and pinion arrangement by shifting the ring gear axis up (or down) one side of the ring gear.
The reason that special oil is used on hypoid gears is because of the amount of shear. Hypoid gears need friction additives to compensate for the hypoid arrangement which would not work well with a Porsche synchronizer since the porsche gearbox and differential share the same fluid and are not hypoid.
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2001 Boxster S 3.6L, Zeintop
"Calling upon my years of experience, I froze at the controls." - Stirling Moss
Last edited by landrovered; 10-24-2011 at 05:08 PM.
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