Date:         Sat, 1 Apr 2006 21:24:24 +0200
Reply-To:     Joy Hecht <jhecht@ALUM.MIT.EDU>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Joy Hecht <jhecht@ALUM.MIT.EDU>
Subject:      Re: MPG measurement issues
In-Reply-To:  <442EA22A.7060602@earthlink.net>
Content-Type: text/plain; charset="us-ascii"

I've noticed that when I drive past one of those sensors that tells you your
mph, my speedometer is consistently 4 mph higher.

My figure of around 18 (and I'm not looking at my records when I give that
figure) is based on what the odometer says.


Joy

****************************************************************
Joy Hecht
and Matilda, 1989 Burgundy Vanagon

For musings about life and the vanadventures:
http://www.joyhecht.net

****************************************************************:::-----Orig
inal Message-----
:::From: Vanagon Mailing List [mailto:vanagon@GERRY.VANAGON.COM] On Behalf
:::Of mark drillock
:::Sent: Saturday, April 01, 2006 5:54 PM
:::To: vanagon@GERRY.VANAGON.COM
:::Subject: MPG measurement issues
:::
:::Most of us have never tried to accurately assess the degree of error in
:::our speedos at highway speeds. I do this for every vehicle I own and use
:::for long trips. Every Vanagon I have owned was optimistic, some by more
:::than 10 miles per hour at indicated 70. Speedo says 70, real speed 58,
:::which number should I use when talking about MPG for that vehicle? I use
:::the real numbers.