--===============7922805406845242761==
boundary=Apple-Mail-7097B41F-54E9-4072-8AE3-34A74113D598
Content-Transfer-Encoding: 7bit
--Apple-Mail-7097B41F-54E9-4072-8AE3-34A74113D598
charset=us-ascii
Content-Transfer-Encoding: quoted-printable
Terry,
I picked a thermo fan switch at VB for about $20.=20
Bill
Sent from my DynaTAC 8000X
On Jul 20, 2019, at 4:59 PM, TERRY SMITH <terryrs@comcast.net> wrote:
Thanks, Randall. I really like the idea of T'ing off the heater return. Lo=
oks like 3/8ths but don't know for sure until I break it down. Meanwhile, w=
hen I opened the Spal fan box, I see the thermostat switch failed to make it=
into the packaging. Much to late to go to the dealer. On Amazon I see a v=
ariety of thermo fan switches 185/195, but none seem rated very well. Could=
be poor wiring, I suppose. =20
Any recommendations on thermo fan switches?
Terry Smith, '59 TR3A
New Hampshire where we're always complaining...bugs, mud, cold, freezing col=
d, icy cold, sleety cold, ...and now heat.
> On July 20, 2019 at 12:27 PM Randall <tr3driver@ca.rr.com> wrote:=20
>=20
> I believe it could be done, but not with standard electronics.=20
>=20
> Most fan controls are looking for a contact closure, so obviously they are=
n't going to work with a gauge sender.=20
>=20
> Even with a fan control that expects a variable resistance (like the gauge=
does), it will "read" that resistance by passing a current through it, and m=
easuring the resulting voltage. The gauge does the same thing But with curre=
nt from two sources, the voltage will be much higher, which will confuse bot=
h fan and gauge.=20
>=20
> One way around that is to build your own fan controller that only looks at=
voltage. Not hard to do, one IC, one transistor, and a handful of resistors=
will do the job. But probably more than most want to tackle. It also makes f=
an operation depend in the gauge, which might not be desirable.=20
>=20
> FWIW, since my car lacks the optional heater, it was easy to mount a fan s=
ensor in the heater return fitting on the water pump housing. Although I did=
not try it, I believe you could put a tee in that hole, and connect both he=
ater return and fan sensor. Heater operation would affect the fan to some ex=
tent, but I think not enough to matter.=20
> -- Randall=20
>=20
> On 20 July 2019 11:08:18 GMT-05:00, TERRY SMITH <terryrs@comcast.net> wrot=
e:
> I'm still researching this but thought I'd ask anyway. I've a Spal pusher=
fan with a thermostat from years ago I never installed. Deciding to instal=
l it because the 3 is running fine at thermostat temp on the road, but short=
ly after I shut down in this heat it barely starts again and runs rough unti=
l the float bowls clear. Letting the fan run after shut down ought to help k=
eep the float bowls from overheating. =20
>=20
>=20
>=20
> Awhile ago I installed SunPro electric temp guage and sending unit. So qu=
estion. Can you use the same temp gauge sending unit as the temp sensor for=
the fan also? The temp gauge sensor uses some sort of resistance affected b=
y heat, I suppose, but whether the fan reads it the same as the gauge is puz=
zling.
>=20
>=20
>=20
> Thanks, everyone (again!)
>=20
> Terry Smith '59 TR3A
>=20
> New Hampshire
>=20
=20
** triumphs@autox.team.net **
Archive: http://www.team.net/pipermail/triumphs http://www.team.net/archive
ash.net
--Apple-Mail-7097B41F-54E9-4072-8AE3-34A74113D598
charset=utf-8
Content-Transfer-Encoding: quoted-printable
<html><head><meta http-equiv=3D"content-type" content=3D"text/html; charset=3D=
utf-8"></head><body dir=3D"auto">Terry,<div>I picked a thermo fan switch at V=
B for about $20. </div><div>Bill<br><br><div id=3D"AppleMailSignature" d=
ir=3D"ltr">Sent from my DynaTAC 8000X</div><div dir=3D"ltr"><br>On Jul 20, 2=
019, at 4:59 PM, TERRY SMITH <<a href=3D"mailto:terryrs@comcast.net";>terr=
yrs@comcast.net</a>> wrote:<br><br></div><div dir=3D"ltr">
<meta charset=3D"UTF-8">
<p style=3D"font-size: 12pt; font-family: helvetica,arial,sans-serif; color:=
rgb(51, 51, 51);">Thanks, Randall. I really like the idea of T'ing of=
f the heater return. Looks like 3/8ths but don't know for sure until I=
break it down. Meanwhile, when I opened the Spal fan box, I see the t=
hermostat switch failed to make it into the packaging. Much to late to=
go to the dealer. On Amazon I see a variety of thermo fan switches 18=
5/195, but none seem rated very well. Could be poor wiring, I suppose.=
<br></p><p style=3D"font-size: 12pt; font-family: helvetica,arial,san=
s-serif; color: rgb(51, 51, 51);"><br></p><p style=3D"font-size: 12pt; font-=
family: helvetica,arial,sans-serif; color: rgb(51, 51, 51);">Any recommendat=
ions on thermo fan switches?<br></p><p style=3D"font-size: 12pt; font-family=
: helvetica,arial,sans-serif; color: rgb(51, 51, 51);"><br></p><p style=3D"f=
ont-size: 12pt; font-family: helvetica,arial,sans-serif; color: rgb(51, 51, 5=
1);">Terry Smith, '59 TR3A<br></p><p style=3D"font-size: 12pt; font-family: h=
elvetica,arial,sans-serif; color: rgb(51, 51, 51);">New Hampshire where we'r=
e always complaining...bugs, mud, cold, freezing cold, icy cold, sleety cold=
, ...and now heat.<br></p><blockquote type=3D"cite">On July 20, 2019 at 12:2=
7 PM Randall <<a href=3D"mailto:tr3driver@ca.rr.com";>tr3driver@ca.rr.com<=
/a>> wrote: <br> <br>I believe it could be done, but not with standard el=
ectronics. <br> <br>Most fan controls are looking for a contact closure, so o=
bviously they aren't going to work with a gauge sender. <br> <br>Even with a=
fan control that expects a variable resistance (like the gauge does), it wi=
ll "read" that resistance by passing a current through it, and measuring the=
resulting voltage. The gauge does the same thing But with current from two s=
ources, the voltage will be much higher, which will confuse both fan and gau=
ge. <br> <br>One way around that is to build your own fan controller that on=
ly looks at voltage. Not hard to do, one IC, one transistor, and a handful o=
f resistors will do the job. But probably more than most want to tackle. It a=
lso makes fan operation depend in the gauge, which might not be desirable. <=
br> <br>FWIW, since my car lacks the optional heater, it was easy to mount a=
fan sensor in the heater return fitting on the water pump housing. Although=
I did not try it, I believe you could put a tee in that hole, and connect b=
oth heater return and fan sensor. Heater operation would affect the fan to s=
ome extent, but I think not enough to matter. <br>-- Randall <br> <br><div c=
lass=3D"ox-71661db6d1-gmail_quote">On 20 July 2019 11:08:18 GMT-05:00, TERRY=
SMITH <<a href=3D"mailto:terryrs@comcast.net";>terryrs@comcast.net</a>>=
; wrote:<blockquote><p style=3D"font-size: 12pt; font-family: helvetica,aria=
l,sans-serif; color: #333333;">I'm still researching this but thought I'd as=
k anyway. I've a Spal pusher fan with a thermostat from years ago I ne=
ver installed. Deciding to install it because the 3 is running fine at=
thermostat temp on the road, but shortly after I shut down in this heat it b=
arely starts again and runs rough until the float bowls clear. Letting the f=
an run after shut down ought to help keep the float bowls from overheating.&=
nbsp; <br></p><p style=3D"font-size: 12pt; font-family: helvetica,arial,sans=
-serif; color: #333333;"><br></p><p style=3D"font-size: 12pt; font-family: h=
elvetica,arial,sans-serif; color: #333333;">Awhile ago I installed SunPro el=
ectric temp guage and sending unit. So question. Can you use the=
same temp gauge sending unit as the temp sensor for the fan also? The=
temp gauge sensor uses some sort of resistance affected by heat, I suppose,=
but whether the fan reads it the same as the gauge is puzzling.<br></p><p s=
tyle=3D"font-size: 12pt; font-family: helvetica,arial,sans-serif; color: #33=
3333;"><br></p><p style=3D"font-size: 12pt; font-family: helvetica,arial,san=
s-serif; color: #333333;">Thanks, everyone (again!)<br></p><p style=3D"font-=
size: 12pt; font-family: helvetica,arial,sans-serif; color: #333333;">Terry S=
mith '59 TR3A<br></p><p style=3D"font-size: 12pt; font-family: helveti=
ca,arial,sans-serif; color: #333333;">New Hampshire<br></p></blockquote></di=
v></blockquote><p style=3D"font-size: 12pt; font-family: helvetica,arial,san=
s-serif; color: #333333;" class=3D"default-style"><br> </p>
</div><div dir=3D"ltr"><span>** <a href=3D"mailto:triumphs@autox.team.net";>=
triumphs@autox.team.net</a> **</span><br><span></span><br><span>Donate: <a h=
ref=3D"http://www.team.net/donate.html";>http://www.team.net/donate.html</a><=
/span><br><span>Archive: <a href=3D"http://www.team.net/pipermail/triumphs";>=
http://www.team.net/pipermail/triumphs</a> <a href=3D"http://www.team.=
net/archive">http://www.team.net/archive</a></span><br><span></span><br><spa=
n>Unsubscribe/Manage: <a href=3D"http://autox.team.net/mailman/options/trium=
phs/wbeech@flash.net">http://autox.team.net/mailman/options/triumphs/wbeech@=
flash.net</a></span><br></div></div></body></html>=
--Apple-Mail-7097B41F-54E9-4072-8AE3-34A74113D598--
--===============7922805406845242761==
Content-Transfer-Encoding: 7bit
Content-Disposition: inline
** triumphs@autox.team.net **
Archive: http://www.team.net/pipermail/triumphs http://www.team.net/archive
--===============7922805406845242761==--
|