[T3] Recalibrate speedometer

[Jim Adney]

On 9 May 2015 at 7:32, Jacob Adam Schroeder wrote:

> Thanks for all the replies.  So far it seems to be a linear issue and by
> that I mean that it is always off by 10 mph.  It is annoying, but I have
> other issues to troubleshoot in the meantime that are a higher priority.

Mathematically, "linear" usually means "proportional" so what you 
seem to have is a constant error, neither linear, proportional nor 
exponential. Yeah, I know, these all get mixed up in the general 
vernacular.

> I really only started noticing this issue because my fuel gauge has started
> acting up and I have been relying on the odometer to measure my mileage as
> a proxy for how much fuel I have left.  Using the odometer, my gas mileage
> seems low, and that got me thinking.  My fuel gauge was working recently,
> so I will focus on getting that going first and will likely start a new
> thread about that.

FYI, I repair both speedos and gas gauge senders. Both have rather 
common problems that are annoying. In most cases, none of them are 
simple DIY projects.

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Jim Adney, jadney at vwtype3.org
Madison, Wisconsin, USA
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