Global Positioning System speedometer

a little on the expensive side at over $500....

(IMG:http://www.nordskogperformance.net/images/products/auto/speedos/gps02160_lg.gif)

have you priced Porsche electric speedos?
('76+ 915)

that's in the ball park.
i'm gonna need one when i replace my transmission, but until i can find the one i want, i'm going to have to calibrate the tach from the GPS and go by that...

That's the first one I've seen that looks like a traditional in-dash gauge. Cool.

I love the features in my handheld GPS. Speedo, trip odometer, average speed, top speed, maps, routes, etc... for a lot less $$. They look different, but can be mounted anywhere with a holder.

http://www.garmin.com/products/etrexLegend/

Officer: "Son do you know how fast you were going back there?"

Driver: "No, I don't, my speedometer was still getting a fix on the satellites."


(IMG:http://www.914world.com/bbs2/html/emoticons/biggrin.gif) (IMG:http://www.914world.com/bbs2/html/emoticons/unsure.gif)

-Tony

They work good untill you go into a tunel or come out of a parking garage and have to hold on until it aquires the satelites.

I bought the Uniden GPS-RD.

http://www.uniden.com/productsupport2.cfm?...m?product=GPSRD

It bought it specifically because it has a speed readout. They are hard to find, but do come up on Ebay used, once in a while. Be prepared to spend around $200 used! Very accurate.

Oh, and for $500, you can get a very very good mapping GPS unit from Magellan (A ROadmate 300). The locate screen gives you direction, speed, road name, etc. I have it's big brother, the Roadmate 700. Virtually the same as the Neverlost units Hertz uses.

Here is the trick thing to do. Gut a stock 914 speedo, and put the guts of this in. Then it looks stock, but uses the GPS.

BTW.. I have been looking at this for months.

For a handheld, the Garmin Gecko has a speed readout and an odometer, and it's under $80. The only trouble with it is it takes forever (like a minute) to sync up with the satellites. This is a great toy to calibrate a stock speedo. I discovered by 912 speedo reads LOW at freeway speeds (65 indicated is 73mph actual), so I may have avoided an unexpected ticket, which more than paid for the thing.

The various electronic speedos are very easy to recalibrate, and pretty easy to set up with a magnet on a CV joint and the sensor on a diff cover stud. You can get a VDO that looks vaguely like the stock speedo and a handheld GPS to calibrate it for roughly half what these guys want for their all-in-one unit.