Michael,
Do you think the link you added helps from an electrical point of view,
or from motion/vibration point of view? I'm thinking the latter - less
bounce, less movement across the wire wound resistor - less motion of
the gauge needle.
Cheers,
Bob Haskell
AHCA 3000 Mk I registrar
http://www.ciahc.org/registry_3000mk1.php
On 08/26/2015 07:27 AM, Michael Salter wrote:
> Actually a Healey fuel gauge can be made to work very accurately. The
> gauge in my 100 is as steady as a rock and a very accurate indicator of
> the tank contents.
> The only change I made was to add a tiny connecting link between the
> float arm and the body of the gauge sender as in the attached pic.
> Prior to doing this I had no idea that a gauge of this type could work
> so well.
>
> Michael S
> BN1 #174
>
> On Wed, Aug 26, 2015 at 1:18 AM, John Spaur <jmsdarch@sbcglobal.net
>
> Yes! Will you ever be able to adjust it so it works even remotely
> close to
> accurate? I don't think so. There are many posts covering issues
> with the
> fuel gauge and tank unit. My gauge and sender were "calibrated" by a
> couple
> of shops. The sender is a restored original. Afterwards, it would still
> stick on full, then when over half a tank was used it would drop to 1/2,
> then 1/4 and stop.
>
> I finally calibrated my gauge, with a little more success than the
> professionals, using the calibration unit in this link:
> http://mgaguru.com/mgtech/electric/fg_01.htm BTW, I pulled the
> sender out of
> the car and calibrated it on the bench. You will need to approximate the
> high and low limits which are determined by the depth of the petrol
> tank.
>
> Be warned, it still is almost fruitless. I believe the problem is
> caused by
> how the fuel gauge T and B coils line up with the armature. The fuel
> gauge
> needle is connected to the armature and swings based on the magnetic
> current
> supplied by the sending unit. Over the years the coils have tilted and
> cannot be properly aligned with the armature when the nut is
> tightened. This
> throws off the adjustment.
>
> Let me know how it goes.
>
> Regards,
>
> John Spaur
> '62 BT7
>
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