Hello spridgets,
time to ask the collective wisdom and experience of "the list".
my tach (positive ground) works, kinda. it is heat senstive,
that being, on a hot day and the car warmed up the reading will
show too many "r's" for a given speed, if the thing was
calibrated on a, say, 60 degree day. (i have pertronix ignition,
but don't know if that affected by the heat or just the tach
itself.. .. i am calibrating with a an old LAFAYETTE dwell tach,
(complete with instructions and setting for both positive
ground, AND 4 cylinder operation. ... i have to assume that IT
at least IS accurate, and the readings are confirmed with
milepost timings, vs rpm. i have tried, i think 3 different
tachs, and this one is the best of the lot, so far.
now the questions....
minimania has original "looking" tachs, with new VDO innards,
but they are negative ground only. ..... $215.
nisonger will rebuild my present unit and calibrate for
pertronix .... $115.
the only thing keeping me, so far, from converting to NEG ground
has been the tach, i think. is that the ONLY thing that has to
be changed besides the generator polarization? ...
which way to go???????????????????????????????
--
Best regards,
Bill mailto:pythias@pacifier.com
'66 Sprite (HAN8L 49403)
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