Speedometer Adjustment for 5KTQ?

[Swann, Benjamin R. (BSWANN)]

After comparing speedo with computer, 5 mph seems relatively consistant even
up to 60.  I haven't had a chance to check higher speeds, but it seems the
deviation is closer to 5 MPH rather than 10% I originally thought.  Yes it
has probably been doing this all along.

I dont know if I want to move the needle, as this would make the speedo
incorrect at low speeds, yes?  Also, I'm afraid of breaking it or making it
worse than it was. I can live with 5mph deviation at 60.  At least I know
how to correct for.

I wonder if the speedo reading inaccuracy correlates at all with the
odometer reading.  I'll do some more sampling on a long trip.

I would be interested in any other information regarding correcting the
reading, particularly with changing the resistor.

Thanks for all replies.

Ben
'87 5000cstqw

-----Original Message-----
From: Smeins, Larry [mailto:lsmeins at ball.com]
Sent: Thursday, May 10, 2001 12:39 PM
To: 'BSWANN at arinc.com'
Cc: 'Audi'
Subject: Speedometer Adjustment for 5KTQ?


Your speedo probably has always had this error.  It seems that all 5kts of
this era had a 5 mph offset and a small slope error.  I have a hard copy of
the original post for correcting the calibration and probably have a few
e-mail communications with the original poster in my files.  I found that
moving the needle down by 5mph I got my speedo within 1 to 2 mph over the
range of 35 to 85 mph.  Note that the scale doesn't start at zero but the
needle sets near the start of the scale.  I haven't checked outside that
range.  Changing the resistor will fine tune the upper end.   I can dig
through my files at home if there is an interest.

Larry 

From: "Swann, Benjamin R.  (BSWANN)" <BSWANN at arinc.com>
To: "'quattro at audifans.com'" <quattro at audifans.com>
Subject: Speedometer Adjustment for 5KTQ?
Date: Tue, 8 May 2001 17:10:49 -0400 


Is there anyway to adjust the speed reading of the speedometer.  Mine seems
to be reading a little fast after I replaced a gear(from spare unit) that
had caused the Odometer to stop working.