speaking of tachs, is anyone able to resolve the mystery of properly wiring
up a Sprite tach, I have one in one of my Minis and was till now unable to
get the thing going. (electrically challenged as I am...)
Gernot
> ----------
> From: DANMAS@aol.com[SMTP:DANMAS@aol.com]
> Reply To: DANMAS@aol.com
> Sent: Tuesday, July 06, 1999 8:40 PM
> To: spitlist@gte.net; triumphs@autox.team.net
> Subject: Re: Electric Tach question
>
>
> In a message dated 7/3/99 9:47:30 PM Eastern Daylight Time,
> spitlist@gte.net
> writes:
>
> > Dan Masters can probably whip out a circuit to supply that function in
> > his sleep! Right Dan?
> >
> > Dan! Dan, are you listening?
>
> Joe,
>
> I'm listening, and I "sorta" could whip out a circuit, but getting from
> the
> functional design to the real world fix would be a bit of a job. Most of
> these type circuits are intended for computor type enviroment, and a lot
> of
> study and testing would be required to make sure it would work in the
> automobile world. As an example, if the condensor should go bad, you can
> get
> as much as 400 volts on the input to the tach, so it would have to be
> designed to handle that, as well as all the heat and vibration.
>
> I believe TeriAnn said she had an MGB tach? If so, it depends on what
> year
> it is, as the earlier tachs used a current loop rather than input pulses.
> The
> 12 volt lead to the coil made a loop inside the tach, so it is
> magnetically
> coupled. This would be a little different that using a puse divider.
>
> However, there is a web site with instructions on how to do this. I don't
> have the address, but I'll ask in the MGV8 mail list and see if anyone
> there
> has it. As I recall, it was a fairly simple fix.
>
> Dan Masters,
> Alcoa, TN
>
> '71 TR6---------3000mile/year driver, fully restored
> '71 TR6---------undergoing full restoration and Ford 5.0 V8 insertion -
> see:
> http://members.aol.com/danmas/
> '74 MGBGT---3000mile/year driver, original condition - slated for a V8
> soon
> '68 MGBGT---organ donor for the '74
>
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