Tod, you're right. All these tachs came from the same place, and all have the
same problems - once the capacitors crack or a transistor fails, the tach works
poorly or not at all. The replacement circuit board developed for the Tiger can
be used in any of these other tachs as well. The replacement board also gives
you the option of running a voltage-triggered tach, which is necessary if
you're using MSD, Jacobs, or any other multi-spark or distributorless ignition.
The installation of the tach board is documented on my webpages:
http://members.shaw.ca/tsmit/tachmod/tachmod0.html - one of the links points
back to a log of my earlier efforts.
That page says the prices are TBD, but I'll shortly be adding the following
prices to the page:
Bare circuit board: $15
Kit including all components: $55
Built-up and tested board, ready for you to install it in your tach: $80
Tach rebuild, including the new board and calibration: $150
The boards and rebuild service will be available through Tom, myself, and a few
others, once Tom gets back from his vacation. I currently have ten boards that
I'm building up and then I'm doing another circuit board fabrication run.
Regards,
Theo Smit
"Theodore V. Brown" wrote:
> Tom Hall's solution to the tach problem sounds like the way to go and will
> probably be
> more reliable than anything else out there, knowing him, but there are a
> couple of other
> alternatives that have been documented here and there. For one, the Alpine
> 7000 rpm tach
> from a negative ground car (Series V, I think) can be used in the Tiger
> with some recalibration,
> which isn't too difficult. Also, the tach from an early Sprite/MG Midget
> can be used as well,
> as long as it is for a negative ground, again with some recalibration. The
> Spridget tach fits in
> the Tiger dash and looks almost identical to the LAT option tach (except it
> says 4 cylinder,
> instead of 8). They can usually be found on eBay for $10 or $20. It has
> also been reported
> that the tach from a Triumph Stag will work, too. It's even possible to
> use the tachs from
> positive ground cars by doing a little bit of rearranging of wires inside
> the case. Lots of
> possibilities if you look around as a lot of the tachs used in the sixties
> all came from the
> same place.
>
> Regards,
> Tod
> B382002384LRXFE
|