although the site is talking about an MG tach...this works on a Triumph elec
tach as well. I've converted a late 1500 Spit 4 cyl tach to read correctly
on a '73 MKIII GT6 six cylinder engine with this mod.
http://www.zaks.com/mgb/leonsmgb/Better_tach.htm
Paul Tegler
ptegler@cablespeed.com
www.teglerizer.com
----- Original Message -----
From: "George Pasek" <pasek001@umn.edu>
To: <spitfires@autox.team.net>
Sent: Friday, October 14, 2005 12:44 PM
Subject: 78' Electronic Tach Wanted
> Hello...
>
> The Smith electronic tach in my '78 is in need of replacement. At 3500rpm
it
> is reading 4500 and it varies. I know that there is suppose to be a
> calibration adjustment on the back, but the PO told me that It had died
once
> on him and he repaired a cracked PC board in it and also replaces a few of
the
> capacitors. Apparently it is using a op-amp chip that is either unmarked
or
> does not translate into a common number and there was also something about
it
> not having a standard 8, 14, 16 pin configuration.
>
> So if someone has a known good one that they are willing to part with or
if
> there is a schematic out there somewhere I'd like to hear about it.
>
> tnx
>
> George
> 78 "Spiffy"
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