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Aw shucks. And here I was thinking that my car really came on the cam
after 4,000 rpm!
On Mon, Sep 12, 2016 at 8:12 AM, Smit, Theo via Tigers <
tigers@autox.team.net> wrote:
> Stepper motor or quadrature coil driven gauges actively drive the needle
> to a given angle on the gauge, so they are not that sensitive to the needle
> weight. However, our old-school tachometer only expects to drive against
> the torsion spring in the needle movement, and its linearity across the
> scale depends on being properly counterbalanced. If you put on extra paint
> without adjusting the counterbalance then the tach will start to read low
> at idle and high at the redline.
>
> Theo
>
> From: Tigers <tigers-bounces@autox.team.net> on behalf of Tigers List <
> tigers@autox.team.net>
> Reply-To: "CoolVT@aol.com" <CoolVT@aol.com>
> Date: Saturday, September 10, 2016 at 9:05 AM
> To: "tsmit@shaw.ca" <tsmit@shaw.ca>, Tigers List <tigers@autox.team.net>
> Subject: Re: [Tigers] guage needle paint
>
> Think I told this story before.....a person I know worked in a factory run
> by BF Goodrich Aerospace many yrs. ago. She soldered and assembled parts to
> gauges. Her place in the assembly line was to solder a few parts, paint
> the needle and assemble her section of the gauge. I asked what the needle
> paint was and she said she didn't know. It was just something in a little
> bottle and had a brush. She said the other people put one coat on the
> needle, but she liked to put on 3 coats to make it look nice:-)
> Someone reminded me that these gauges were most probably calibrated after
> final assembly and testing. But it seems funny when we worry about putting
> too much paint on our needles. These gauges, being used in the aerospace
> industry, gauges that were assembled by workers who had to become certified
> solderers (never knew that designation existed) , each worker having a
> specific task in the assembly and these gauges having to cost 10's of
> thousands of $ each, just got a few dabs of some kind of red paint
>
> ------------------------------
>
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<div dir=3D"ltr">Aw shucks.=C2=A0 And here I was thinking that my car reall=
y came on the cam after 4,000 rpm!</div><div class=3D"gmail_extra"><br><div=
class=3D"gmail_quote">On Mon, Sep 12, 2016 at 8:12 AM, Smit, Theo via Tige=
rs <span dir=3D"ltr"><<a href=3D"mailto:tigers@autox.team.net"; target=3D=
"_blank">tigers@autox.team.net</a>></span> wrote:<br><blockquote class=
=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padd=
ing-left:1ex">
<div style=3D"word-wrap:break-word;color:rgb(0,0,0);font-size:14px;font-fam=
ily:Calibri,sans-serif">
<div>Stepper motor or quadrature coil driven gauges actively drive the need=
le to a given angle on the gauge, so they are not that sensitive to the nee=
dle weight. However, our old-school tachometer only expects to drive agains=
t the torsion spring in the needle
movement, and its linearity across the scale depends on being properly cou=
nterbalanced. If you put on extra paint without adjusting the counterbalanc=
e then the tach will start to read low at idle and high at the redline.</di=
v>
<div><br>
</div>
<div>Theo</div>
<div><br>
</div>
<span>
<div style=3D"font-family:Calibri;font-size:11pt;text-align:left;color:blac=
k;BORDER-BOTTOM:medium none;BORDER-LEFT:medium none;PADDING-BOTTOM:0in;PADD=
ING-LEFT:0in;PADDING-RIGHT:0in;BORDER-TOP:#b5c4df 1pt solid;BORDER-RIGHT:me=
dium none;PADDING-TOP:3pt">
<span style=3D"font-weight:bold">From: </span>Tigers <<a href=3D"mailto:=
tigers-bounces@autox.team.net" target=3D"_blank">tigers-bounces@autox.team.=
net</a><wbr>> on behalf of Tigers List <<a href=3D"mailto:tigers@auto=
x.team.net" target=3D"_blank">tigers@autox.team.net</a>><br>
<span style=3D"font-weight:bold">Reply-To: </span>"<a href=3D"mailto:C=
oolVT@aol.com" target=3D"_blank">CoolVT@aol.com</a>" <<a href=3D"ma=
ilto:CoolVT@aol.com" target=3D"_blank">CoolVT@aol.com</a>><br>
<span style=3D"font-weight:bold">Date: </span>Saturday, September 10, 2016 =
at 9:05 AM<br>
<span style=3D"font-weight:bold">To: </span>"<a href=3D"mailto:tsmit@s=
haw.ca" target=3D"_blank">tsmit@shaw.ca</a>" <<a href=3D"mailto:tsm=
it@shaw.ca" target=3D"_blank">tsmit@shaw.ca</a>>, Tigers List <<a hre=
f=3D"mailto:tigers@autox.team.net"; target=3D"_blank">tigers@autox.team.net<=
/a>><br>
<span style=3D"font-weight:bold">Subject: </span>Re: [Tigers] guage needle =
paint<br>
</div>
<div><br>
</div>
<div>
<div style=3D"FONT-SIZE:12pt;FONT-FAMILY:Arial;COLOR:#000000">
<font color=3D"#000000" size=3D"3" face=3D"Arial">
<div>Think I told this story before.....a person I know worked in a factory=
run by BF Goodrich Aerospace many yrs. ago. She soldered and assembled par=
ts to gauges.=C2=A0 Her place in the assembly line was to solder a few part=
s, paint the needle and assemble her
section of the gauge.=C2=A0 I asked what the needle paint was and she said=
she didn't know. It was just something in a little bottle and had a br=
ush. She said the other people put one coat on the needle, but she liked to=
put on 3 coats to make it look nice:-)</div>
<div>=C2=A0Someone reminded me that these gauges were most probably calibra=
ted after final assembly and testing. But it seems funny when we worry abou=
t putting too much paint on our needles.=C2=A0=C2=A0These gauges, being use=
d in the aerospace industry, gauges that were assembled
by workers who had to become certified solderers (never knew that designat=
ion existed) , each worker having a specific=C2=A0 task in the assembly and=
these gauges having to cost 10's of thousands of $ each, just got a fe=
w dabs of some kind of red paint<img src=3D"http://cdn-cf.aol.com/se/smi/02=
01d201a5/08"></div>
</font></div>
</div>
</span><br>
<hr>
<font face=3D"Arial" color=3D"Gray" size=3D"1"><br>
CONFIDENTIALITY NOTICE: This email and any attachments are for the sole use=
of the intended recipient(s) and contain information that may be Garmin co=
nfidential and/or Garmin legally privileged. If you have received this emai=
l in error, please notify the sender
by reply email and delete the message. Any disclosure, copying, distributi=
on or use of this communication (including attachments) by someone other th=
an the intended recipient is prohibited. Thank you.<br>
</font>
</div>
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<br></blockquote></div><br></div>
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