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No Bob it is an electrical solution.
All the little wire does is provide a solid electrical path between the flo=
at arm and the body which is part of the circuit to the gauge.
It turns out that the "jiggling" of the needle is caused by the circuit mak=
ing and breaking at the arm pivot probably because of a build up of fuel "v=
arnish" on the bearing surfaces.
I intend to do a blog post with a video...
When I can find the time.
Michael S
BN1 #174
-----Original Message-----
From: "Bob Haskell" <rchaskell@earthlink.net>
Sent: =E2=80=8E26/=E2=80=8E08/=E2=80=8E2015 6:16 p.m.
To: "Michael Salter" <michaelsalter@gmail.com>; "healeys@autox.team.net" <h=
ealeys@autox.team.net>
Subject: Re: [Healeys] Gas Gauge
Michael,
Do you think the link you added helps from an electrical point of view,=20
or from motion/vibration point of view? I'm thinking the latter - less=20
bounce, less movement across the wire wound resistor - less motion of=20
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 sti=
ll
> 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 an=
d
> 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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>
>
>
>
> --
> /If you can't fix it with a hammer, you've got an electrical problem./
>
>
>
> _______________________________________________
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<html><head><meta http-equiv=3D"Content-Type" content=3D"text/html; charset=
=3Dutf-8"></head><body><div><div style=3D"font-family: Calibri,sans-serif; =
font-size: 11pt;">No Bob it is an electrical solution.<br>All the little wi=
re does is provide a solid electrical path between the float arm and the bo=
dy which is part of the circuit to the gauge.<br>It turns out that the "jig=
gling" of the needle is caused by the circuit making and breaking at the ar=
m pivot probably because of a build up of fuel "varnish" on the bearing sur=
faces.<br>I intend to do a blog post with a video...<br>When I can find the=
time.<br><br>Michael S<br>BN1 #174</div></div><div dir=3D"ltr"><hr><span s=
tyle=3D"font-family: Calibri,sans-serif; font-size: 11pt; font-weight: bold=
;">From: </span><span style=3D"font-family: Calibri,sans-serif; font-size: =
11pt;"><a href=3D"mailto:rchaskell@earthlink.net";>Bob Haskell</a></span><br=
><span style=3D"font-family: Calibri,sans-serif; font-size: 11pt; font-weig=
ht: bold;">Sent: </span><span style=3D"font-family: Calibri,sans-serif; fon=
t-size: 11pt;">=E2=80=8E26/=E2=80=8E08/=E2=80=8E2015 6:16 p.m.</span><br><s=
pan style=3D"font-family: Calibri,sans-serif; font-size: 11pt; font-weight:=
bold;">To: </span><span style=3D"font-family: Calibri,sans-serif; font-siz=
e: 11pt;"><a href=3D"mailto:michaelsalter@gmail.com";>Michael Salter</a>; <a=
href=3D"mailto:healeys@autox.team.net";>healeys@autox.team.net</a></span><b=
r><span style=3D"font-family: Calibri,sans-serif; font-size: 11pt; font-wei=
ght: bold;">Subject: </span><span style=3D"font-family: Calibri,sans-serif;=
font-size: 11pt;">Re: [Healeys] Gas Gauge</span><br><br></div>Michael,<br>=
<br>Do you think the link you added helps from an electrical point of view,=
<br>or from motion/vibration point of view? I'm thinking the latter =
- less <br>bounce, less movement across the wire wound resistor - less moti=
on of <br>the gauge needle.<br><br>Cheers,<br><br>Bob Haskell<br>AHCA 3000 =
Mk I registrar<br>http://www.ciahc.org/registry_3000mk1.php<br><br>On 08/26=
/2015 07:27 AM, Michael Salter wrote:<br>> Actually a Healey fuel gauge =
can be made to work very accurately. The<br>> gauge in my 100 is as stea=
dy as a rock and a very accurate indicator of<br>> the tank contents.<br=
>> The only change I made was to add a tiny connecting link between the<=
br>> float arm and the body of the gauge sender as in the attached pic.<=
br>> Prior to doing this I had no idea that a gauge of this type could w=
ork<br>> so well.<br>><br>> Michael S<br>> BN1 #174<br>><br>=
> On Wed, Aug 26, 2015 at 1:18 AM, John Spaur <jmsdarch@sbcglobal.net=
<br>> <mailto:jmsdarch@sbcglobal.net>> wrote:<br>><br>>&n=
bsp; Yes! Will you ever be able to adjust it so it works =
even remotely<br>> close to<br>> &=
nbsp; accurate? I don't think so. There are many posts covering issue=
s<br>> with the<br>> =
fuel gauge and tank unit. My gauge and sender were "calibrated" by a<br>>=
; couple<br>> of shops. =
The sender is a restored original. Afterwards, it would still<br>> =
stick on full, then when over half a tank was used it wo=
uld drop to 1/2,<br>> then 1/4 and stop.<br>>=
<br>> I finally calibrated my gauge, with a litt=
le more success than the<br>> professionals, usi=
ng the calibration unit in this link:<br>> http:=
//mgaguru.com/mgtech/electric/fg_01.htm BTW, I pulled the<br>> &nbs=
p; sender out of<br>> the car and ca=
librated it on the bench. You will need to approximate the<br>> &nb=
sp; high and low limits which are determined by the depth of th=
e petrol<br>> tank.<br>><br>> &=
nbsp; Be warned, it still is almost fruitless. I believe the problem =
is<br>> caused by<br>>  =
; how the fuel gauge T and B coils line up with the armature. The fuel<br>&=
gt; gauge<br>> needle is=
connected to the armature and swings based on the magnetic<br>> &n=
bsp; current<br>> supplied by the se=
nding unit. Over the years the coils have tilted and<br>> &nb=
sp; cannot be properly aligned with the armature when the nut is<br>&=
gt; tightened. This<br>> =
throws off the adjustment.<br>><br>> Let me =
know how it goes.<br>><br>> Regards,<br>><=
br>> John Spaur<br>> =
'62 BT7<br>><br>> ___________________________=
____________________<br>> Support Team.Net http:=
//www.team.net/donate.html<br>> Suggested annual=
donation $12.75<br>> Archive: http://www.=
team.net/archive<br>> Forums: http://www.team.ne=
t/forums<br>><br>> Healeys@autox.team.net <=
;mailto:Healeys@autox.team.net><br>> http://a=
utox.team.net/mailman/listinfo/healeys<br>><br>> &nb=
sp; Unsubscribe/Manage:<br>> http://autox.team.n=
et/mailman/options/healeys/michaelsalter@gmail.com<br>><br>><br>><=
br>><br>> --<br>> /If you can't fix it with a hammer, you've got a=
n electrical problem./<br>><br>><br>><br>> ____________________=
___________________________<br>> Support Team.Net http://www.team.net/do=
nate.html<br>> Suggested annual donation $12.75<br>> Archive: h=
ttp://www.team.net/archive<br>> Forums: http://www.team.net/forums<br>&g=
t;<br>> Healeys@autox.team.net<br>> http://autox.team.net/mailman/lis=
tinfo/healeys<br>><br>> Unsubscribe/Manage: http://autox.team.net/mai=
lman/options/healeys/rchaskell@earthlink.net<br>><br></body></html>=
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_______________________________________________
Archive: http://www.team.net/archive
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