[DeTomaso] Speedhut versus Autometer gauges help

Fri Jan 18 14:30:31 EST 2013

Boyd I think you have some incorrect information.

First, I don't believe the error built into the civilian GPS will float
enough over time to be an issue. We receive the same GPS in airplanes. We
can shoot approaches with non corrected GPS. It is still pretty accurate.
The information does not vary enough or fast enough to change any of the
parameters we are navigating. While the accuracy is lower, it is not
moving around enough to effect things like speed. It is more that your
destination may be 15 foot to the right of where it shows on the GPS.

We can shoot precision GPS approaches with what is called Wide
Augmentation.  Wide Augmentation is basically a ground station that says,
ok the GPS says I am here, but I am really here. Adjust your GPS to make
these changes. It is all done internally.

The government holds the key to change the accuracy at any point. If our
country is of threat you may even see our GPS made unavailable to the
public. It is a difficult thought realizing how many things rely on it.

As far as speed limitation, that is simply not true.

I think the biggest limitation to accuracy, as was posted, is interment
ant contact. I also think antenna location in the car would be crucial to
reliability.

Here is something else. Some truck drivers are using GPS scramblers so
their companies cannot track their position. It has in some cases
interfered with aircraft approaches and is becoming a problem. If you find
yourself on a highway and you lose signal look at the trucks around you.

> GPS units have the ability to be incredibly accurate, that's down to
> millimeters and micro seconds. The problem is this these levels of
> accuracy
> are limited to miltary GPS units. Civilian GPS units are forced by legal
> statute to build in varying degrees of error. The governments that enforce
> theses regulations are trying to prevent GPS units from being used by
> terrorist groups .
> I don't know the particulars but I was told that GPS units designed for
> automotive or marine use are also set up so they can't be used in anything
> traveling over a particular speed ( like 200 mph). This is supposed to
> prevent their use in a home made cruise missel . A few year ago a guy in
> New Zeland was offering plans on popular mechanics  to build a cruise
> missel power erred by a ram jet that was supposed to be able to be
> constructed with all "off the shelf components,GPS, computer, etc" With a
> substantial range and a high speed ( like 500 mph).
>
> So you can blame all the errors in GPS  on the government and the
> terrorists. On a brighter note I had heard that the government  had
> recently lowered  the required degree of error built in on GPS units.
>
> Boyd
>
>
> On Friday, January 18, 2013, Roland Jaeckel wrote:
>
>> In town, they are zero accurate. If they don't have contact to all
>> satelites, they can't notice, that youre driving thrue a turn.
>> Whatch for it in town and anywhere while changing speed quickly. They
>> can't
>> follow as quick as a convetionel speedo can. They work for a boat, but
>> that
>> is way slower in changing speeds.
>>
>> Roland Jaeckel
>>
>> --------------------------------------------------
>> From: "michael at michaelshortt.com <javascript:;>"
>> <michaelsavga at gmail.com<javascript:;>
>> >
>> Sent: Friday, January 18, 2013 7:38 PM
>> To: "Will Kooiman" <will.kooiman at gmail.com <javascript:;>>
>> Cc: <detomaso at poca.com <javascript:;>>; "Ed Mendez"
>> <edducati at mac.com<javascript:;>
>> >
>> Subject: Re: [DeTomaso] Speedhut versus Autometer gauges help
>>
>> > I would say, REALLY accurate, since I use a regular GPS to tell me how
>> > wrong the speedos are in my cars.
>> >
>> > I have used a dedicated GPS and my smartphone GPS aty the same time
>> and
>> > they are identical, while the car
>> > ( changed by non-factory wheels and tires ) is always off, and by
>> varying
>> > amounts based upon speed, the faster you go, the more off they are.
>> >
>> > Michael
>> >
>> >
>> >
>> >
>> > On Fri, Jan 18, 2013 at 1:32 PM, Will Kooiman
>> > <will.kooiman at gmail.com>wrote:
>> >
>> >> How accurate are GPS speedos?
>> >>
>> >> --
>> >> Will
>> >>
>> >>
>> >>
>> >>
>> >>
>> >> On 1/18/13 12:21 PM, "Kirby Schrader" <kirby.schrader at gmail.com>
>> wrote:
>> >>
>> >> >I have their gauges in my GT40 and a couple in the Pantera.
>> >> >I am considering changing out the remainder in the Pantera.
>> >> >
>> >> >They are good gauges. They will do almost anything you want in terms
>> of
>> >> >logos, styles, fonts, etc.
>> >> >They are very responsive to problems.
>> >> >I had an AFR gauge DOA. They sent me a new one and I sent the other
>> one
>> >> >back.
>> >> >No drama, no fuss, no muss.
>> >> >
>> >> >Highly recommended from my point of view.
>> >> >Mike Trusty has them in his GT40 and loves them.
>> >> >He's putting them into his Pantera, too.
>> >> >
>> >> >Go for it!
>> >> >
>> >> >FWIW,
>> >> >Kirby
>> >> >
>> >> >
>> >> >On Fri, Jan 18, 2013 at 11:12 AM, Ed Mendez <edducati at mac.com>
>> wrote:
>> >> >
>> >> >> Anyone had any experience with these guys and their gauges?
>> >> >>
>> >> >> http://www.speedhut.com/
>> >> >>
>> >> >> They are made in the USA and even better they will silkscreen the
>> De
>> >> >> Tomaso Logo on the gauges for you. They have a very cool GPS
>> 200mph
>> >> >>speedo
>> >> >> with LCD screen, with several different functions such as compass,
>> >> >> elevation, 1/4 mile and 0-60mph times, they also make a full line
>> of
>> >> >>metric
>> >> >> system gauges.
>> >> >>
>> >> >> Anyway, the bummer is the biggest speedo and tach they make is
>> 4.5",
>> >> >> Aren't the Panteras 5"?
>> >> >>
>> >> >> I looked at Autometer, and I like the Sport-Comp II, Ultru-Lite
>> II,
>> >> >> and
>> >> >> the Elite series with through the lens LED, and warning functions,
>> but
>> >> >>they
>> >> >> do not make a 200mph 5" speedo in those.
>> >> >>
>> >> >> So question is:
>> >> >>
>> >> >> Anyone know if the Speedhut gauges are any good, and would you use
>> hem
>> >> >>in
>> >> >> your Pantera?
>> >> >>
>> >> >> Is the Pantera a 5" speedo and tach?
>> >> >>
>> >> >> Thanks, Ed
>> >> >> _______________________________________________
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