Always wondered why extreme speedometer accuracy is such a holy or holey
grail.  Like Time, it really doesn't matter what the speedo says only what
the speed device on the arresting officer's machine says.  In traffic, stay
with the slower sheep and the wolf will generally ignore you.  Now if your
speedo is 10% off then at 30 its 27 or 33, no worries, at 60 it's 66 or
54.  Not really enough to gather paper but enough to get the big hairy
eyeball from the  gendarme.  On the superslab, you won't likely be able to
cause a kerfluffle, and with big tires and unmodified braking 65 is way
fast enough.  If you drive it enough, you can mentally adjust for
groundspeed versus indicated.

Pensionerd.

On Mon, Jul 28, 2014 at 1:55 PM, Dennis Haynes <d23haynes57@hotmail.com>
wrote:

> The speedometer is very easy to re-calibrate. Simply reposition the
> needle. As for the odometer most from this vintage are over ambitious ~4%.
> The number at the bottom of the speedometer face indicates revolutions per
> mile. Compare that with the RPM of the tire size you wish to run. Some vans
> have speedos calibrated for 805 revolutions per mile and stock tires run
> close to 830. That 3% right there.
>
> Dennis
>
> -----Original Message-----
> From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf
> Of Ralph Meyermann
> Sent: Monday, July 28, 2014 9:22 AM
> To: vanagon@GERRY.VANAGON.COM
> Subject: Crazy idea?
>
> I'm probably not the only one to think of this. With all the various tire
> sizes/options we are putting on and changing our Speedo readings, I was
> thinking modification of the O2 mile counter or making something in its
> place with changeable gears to correct the reading for running non factory
> size tires???  Do I need medication for this idea??
>
> Velma 82 1.9L AAZ TD Westy
>