Thanks for the input. The question remains, (I presume) that some body (automotive?) decreed that fuel usage would be expressed in L/100 km. IF L/Mm would be an improvement (for reasons already expressed) where does one go to propose such a change? D.
-----Original Message----- From: Bill Potts <[EMAIL PROTECTED]> To: U.S. Metric Association <[EMAIL PROTECTED]> Date: March 29, 2002 21:45 Subject: [USMA:19152] RE: Fwd: Re: What is an SI unit? >I can only assume that people regard 100 km as a nice base value for trip >planning, using a quick mental calculation. > >If a trip is between 400 km and 500 km and the car uses 9 L/100 km, then it >will consume between 36 L and 45 L on the trip. The advantage is that the >trip consumption is of the same order of magnitude as the specified rate of >consumption. > >Neither of the alternatives (0.09 L/km and 90 L/Mm) has quite the same feel. >Also, given that highway and trip distances are given in kilometers, people >are not used to thinking in megameters. > >Bill Potts, CMS >Roseville, CA >http://metric1.org [SI Navigator] > >-----Original Message----- >From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On >Behalf Of Duncan Bath >Sent: Friday, March 29, 2002 17:53 >To: U.S. Metric Association >Subject: [USMA:19151] RE: Fwd: Re: What is an SI unit? > > >I concur. The problem is, where did the L/100 km come from? >Duncan >-----Original Message----- >From: Joseph B. Reid <[EMAIL PROTECTED]> >To: U.S. Metric Association <[EMAIL PROTECTED]> >Date: March 29, 2002 17:04 >Subject: [USMA:19148] RE: Fwd: Re: What is an SI unit? > > >>Bill Potts wrote in USMA 19131 >> >>>There's a very common exception -- L/100 km. >> >> >>I would prefer L/Mm. It is 4 characters shorter and in practice would >>eliminate a decimal point from the number. >> 1 L/Mm = 10 L/100 km >> >>Joseph B.Reid >>17 Glebe Road West >>Toronto M5P 1C8 TEL. 416-486-6071 >> >
