quattro digest, Vol 1 #3718 - question on HP and how its measured (LAC)

[Larry C Leung]

Jack is correct. Crankshaft is generally attached to pump a water tower
to
provide load, HP is then measured by what eventually works out to torque
(force x dist) and RPM to get HP.

LL - NY


> From: "Jack Gagnon" <bullitt at cybertours.com>
> To: "ricematthews" <ricematthews at msn.com>, <tlum at flash.net>
> Cc: <quattro at audifans.com>
> Subject: RE: question on HP and how its measured (LAC)
> Date: Wed, 24 Jul 2002 18:29:49 -0400
>
> I don't think so.  I am Pretty sure the change was gross vs net
> which means
> that all accessories such as water pumps, alternator paoer steering
> pumps
> need to be on the engine when testing. Not RWHP.
>
> Jack
>
> -----Original Message-----
> From: quattro-admin at audifans.com
> [mailto:quattro-admin at audifans.com]On
> Behalf Of ricematthews
> Sent: Wednesday, July 24, 2002 2:08 AM
> To: tlum at flash.net
> Cc: quattro at audifans.com
> Subject: Re: question on HP and how its measured (LAC)
>
>
> It was always my understanding that as of about 1968 (or maybe it
> was 1971
> or 1973?), all auto manufacturers were supposed to report their hp
> ratings
> at the wheel.  Before that time, most ratings were taken at the
> crankshaft.
>
> -Mark
>