Mike,
One of my cars came with a dead tach where the clock should be and an
aftermarket clock stuck through the glove box door. What a hack job
considering it was, I guess, a dealer mod. Anyway, when I restored
the car I replaced the glove door and found an original clock (which I
had converted to quartz) and put it in the right place again. Since I
wanted a tach too I found a small tach sold at Kragen auto parts for
about $35 which I mounted to the steering column on the right side.
It works well, isn't too obvious and doesn't take up any leg room.
I'm not sure if it will work on a positive ground car though but I
switched both my cars to negative ground when I restored them.
I still have that dead tach and its paperwork. It is a Veglia tach
that would work on both positive and negative ground systems.
John Friese
67 White
67 Red
--- In amphicar-lovers@yahoogroups.com, Bill Connelly <amphicar@...>
wrote:
>
> I guess in the 60s one took a hit of mescaline and then if a fish
> wearing a toupee came up to the surface and told you to slow down
> through the school zone, you knew you were going too fast, Casey Jones.
>
> Just a guess.
>
> Bilgey
>
> On Wed, 10 Oct 2007 7:46 pm, WB6WSN wrote:
> >> --------------------
> >>
> >> From: amphicar-lovers@yahoogroups.com
> >> [mailto:amphicar-lovers@yahoogroups.com] On Behalf Of Eric M
> >> Sent: Wednesday, October 10, 2007 11:24 AM
> >> To: amphicar-lovers@yahoogroups.com
> >> Subject: Re: [amphicar-lovers] Re: Tachometer
> >>
> >> I was looking at the below John and I'm trying to figure how in the
> >> 60's you "knew" your speed on water? Today I just look at my GPS
but
> >> how did they do it in olden times?
> >>
> >> Eric
> >
> > In the really olden times, you threw a small log off the bow, then
> > timed how long it took to sail past it, and calculated your speed
> > (knowing the length of your vessel). A variation is to toss a
small sea
> > anchor and line off the stern, and count the knots in the line for a
> > time period. (Don't remember the formula for that.)
> >
> > In the middle olden times, you dumped a propeller-like device over
the
> > stern, and it rotated proportionally to vessel speed. RPM could be
> > related to vessel speed.
> >
> > In the recent olden times, when yachts had tachometers, you could
run a
> > measured course (like one buoy to another, or maybe a breakwater
had a
> > paint-stripe every quarter mile). Typically, you would calibrate
> > several RPM settings for MPH.
> >
> > Before GPS, you could use a vehicle radar to measure your speed
> > relative to a shore object. Or have a friend on shore measure you in
> > your boat.
> >
> > This advice is moot for an Amphi, since they didn't come with
> > tachometers. Further, it doesn't really matter much whether you are
> > doing 4.5 MPH or 6 MPH. Unless you are up to something truly unique,
> > Amphis don't really call for much in the way of navigating skills. <g>
> >
> > I imagine that you could relate the height of the standing wave of
your
> > wake water to Amphi speed. OTOH, it might be a bit difficult to reach
> > back and measure that.
> >
> > Ed Price
> >
> > El Cajon, CA USA
> >
> > 67 Rust Guppy
> >
> >
>
