hp loss

Greg Hermann bearbvd at sni.net
Sat Mar 13 19:25:08 GMT 1999


>On Fri, 12 Mar 1999 Jason_Leone at amat.com wrote:
>
>> <<I have wondered about this myself.  I have heard anywhere from 15%
>> to 25% in drivetrain losses.>>
>>
>> Typically, expect a RWD front engine car to lose 20%. Expect a FWD front
>>engine
>> car to lose 15%. I'd guess a RWD rear engine car would be closer to 15%
>>than 20%
>> (ala Porsche). It depends on the individual drive train design, and the
>> materials used.
>
>A big factor is the rear axle gearset and especially if it is a hypoid
>design and also [I think] how much the actual offset is between the ring
>and pinion centreline; the greater the offset, the longer the pinion tooth
>becomes, thus increasing friction. I notice spiral bevel gearsets coming
>back into production and I believe it is because of the greater drag of
>the hypoid design.

Yep!!

Greg





More information about the Diy_efi mailing list