Hello spridgets,
by now nearly everyone is familiar with my problems in
calibrating my tach, to a dwell tach to emperical testing
(measured mile/time)... well.. to add to the problem, which i
thought i had solved, it turns out the tach is temperature
sensitive.??????!!!!!!!
as i drove to the historic races saturday, it was showing 4100
rpm at 60 mph.. about 68 degrees F., ambient temp. ... going
home in 90 degree weather is was showing 4600 rpm, again at 60
mph. .. so i recalibrated the tach when i got home.... later
that evening when the temp cooled, i had to reset it .. AGAIN...
all seemed well driving to work, (cool temp) but driving home
the tach again read high.... today .. same thing... so i
recal-ed again when i got home... put it spot on with a dwell
meter (my reference) ... now that the temp has cooled outside, i
just checked and it is reading lower.... ..
anyone else have this problem? ... is it a pertronix issue? ..
should i bag it all and buy an aftermarket tach that just runs
off the coil? .... do the Frank thing and get a newer small one
and stuff the guts in present one?... go to autogage?...
hints, tips, suggestions, welcome...........
--
Best regards,
Bill mailto:pythias@pacifier.com
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