[Re: speedo accuracy]

[losinit@usa.net (Cathy Boyko)]

"Rabbit16v" <Rabbit16v@attbi.com> wrote:
I think it depends on which speedo you are using too.  I tested the speed=
o
in my Rabbit Diesel Pickup and it is off 1/10th every mile!!!  So if I am=

going 60, I'm actually going 66 and 70 is 77 and so on (hey, now, I can g=
et
there going downhill!).  My speedo in my Rabbit which is a German KM spee=
do
is much more accurate.  I think on average it would be fairly reasonable =
to
say that most speedos are off about 2% to 5% at higher speeds and less at=

lower speeds.  If I thought about it I'm sure I could figure out why spee=
dos
are less accurate at higher speeds mathematically but I'm too lazy.  At
first I thought it was the flexibility of the cable making it unable to k=
eep
up with the speed of the vehicle but that energy has to go somewhere and
eventually it would just twist off everytime you drive so it must be
something in the speedo itself.  Probably has to do with the higher tensi=
on
of the spring on the needle at higher speeds!  HTH

Dave

Dave
-l


Can't resist the math on this one, :
60 + 10% =3D 66
70 + 10% =3D 77...
So you'd be off by 10% IMHMO

Mine as I've said before would fit the "2-5% optimistic" category. =

Pretty sure I don't have the "wring gear" in there...<ducking>

Gotta go do some "road skating" (freezing rain), see ya later...
Cathy