[Healeys] Polarity
gradea1 at charter.net
gradea1 at charter.net
Sat Mar 7 10:39:54 MST 2020
Good one , Bob! However, my tach cable is different on each end. I
think stock Positive ground works well. I floated my Smiths clock and
it has been that way for years. Hank
-----------------------------------------From: "Bob Spidell"
To: healeys at autox.team.net
Cc:
Sent: Saturday March 7 2020 9:30:01AM
Subject: Re: [Healeys] Polarity
The article on healey.org documents tells how to convert an
electronic tach. For the mechanical ones, you just have to reverse the
cable.
bs
On 3/7/2020 8:29 AM, i erbs wrote:
What about tachometers?
Ira Erbs
Portland,OR
1959 Austin Healey BN4
1967 MGB
On Sat, Mar 7, 2020, 6:00 AM Kees Oudesluijs wrote:
The original pumps had a capacitor over the points which made them
dual polarity. At a later stage SU changed the capacitor for a diode
which made the pump polarity sensitive. If you remove the diode and
fit a transil over the points the pump becomes dual polarity.
The very early pumps with the single points may not have had any
capacitor or diode fitted, which would lead to spark erosion of the
points. These were also dual polarity.
The later electronic/solid state versions are all polarity sensitive.
Kees Oudesluijs
Op 7-3-2020 om 14:49 schreef David P:
SU fuel pumps are generally polarity sensitive...
On 3/7/2020 1:18 AM, Kees Oudesluijs wrote:
In addition to the article:
-Change polarity to the radio if fitted. Some older radio's have a
polarity switch.
-Check if clock is polarity sensitive. Some older Smiths/Jaeger
clocks are dual polarity. Later ones are polarity sentive.
-Change over the wires from the Amp gauge.
Kees Oudesluijs
Op 7-3-2020 om 04:48 schreef Max Byers:
See attachment.
Steve Byers
HBJ8L/36666
BJ8 Registry
AHCA Delegate at Large
Havelock, NC USA
FROM: Healeys [mailto:healeys-bounces at autox.team.net [2]] ON BEHALF
OF ahbn6--- via Healeys
SENT: Friday, March 6, 2020 9:32 PM
TO: Healey List
SUBJECT: [Healeys] Polarity
IS THERE ANY STEP BY INSTRUCTIONS ON HOW TO CHANGE TO NEGATIVE
GROUND?
JOHN SIMS
WWW.HEALEY6.COM [3]
MATAWAN, NJ
Links:
------
[1] mailto:coudesluijs at chello.nl
[2] mailto:healeys-bounces at autox.team.net
[3] http://mail2.spectrum.net/HTTP://WWW.HEALEY6.COM/
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