Real HP loss numbers

Bruce Plecan nacelp at bright.net
Fri Mar 12 19:27:20 GMT 1999


-----Original Message-----
From: A70Duster at aol.com <A70Duster at aol.com>
To: diy_efi at efi332.eng.ohio-state.edu <diy_efi at efi332.eng.ohio-state.edu>
Date: Friday, March 12, 1999 5:03 AM
Subject: Real HP loss numbers

Maybe locked up reach 97%.  More commonly 10% slippage.  For a real low po
car maybe 6.  If ya get drgstrip plus off of the ftp you can play with
converter slippage.
Bruce


>Was wondering (induced by all the talk with computers recording spark
signals
>and computing HP) what are the actually losses in drivetrain.  I've heard
the
>torque converter is 97% efficient at part throttle and 2 hp at U-joints (I
>don't believe, that's 1500 Watts at each joint).  Looking at tranny (auto
and
>standard) u-joints, ring and pinion, bearings, spider gears, axles....
>Sorry, it's off the beaten path, oh well    :)
>Mike





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