GPS Speedometer
#1
Three Wheelin'
Thread Starter
GPS Speedometer
Is anyone using or consider using a GPS enabled Speedometer such as this one from Autometer (no affiliation)?
Am having problems with my speedometer.
Can't seem to get the needle to move smoothly.
Been months. Checked all the wiring from the trunk etc.
Found no continuity problems . Needle moves in steps.
All other gauges operate normally.
Am having problems with my speedometer.
Can't seem to get the needle to move smoothly.
Been months. Checked all the wiring from the trunk etc.
Found no continuity problems . Needle moves in steps.
All other gauges operate normally.
#2
I did install one a few years back, the owner ordered it and the only bad deal is he didn't get the one with a remote trip-odo reset. I think it's a great product from Speedhut.
#3
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Join Date: Aug 2014
Location: Adirondack Mountains, New York
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I didn't know there was such a thing. Speedometer error should be a thing of the past. But GPS speed is not entirely reliable either, moment to moment.
Longer term GPS data could be used to calibrate the normal speedometer. Or something like the system in an optical mouse. Put new tires on the car, it would soon make a correction. Most new cars have GPS built-in, for one reason or another, so car makers shoul be doing this already. Maybe they are.
Longer term GPS data could be used to calibrate the normal speedometer. Or something like the system in an optical mouse. Put new tires on the car, it would soon make a correction. Most new cars have GPS built-in, for one reason or another, so car makers shoul be doing this already. Maybe they are.
#4
Rennlist Member
IIRC Shawn Stanford just installed one and posted not to long ago. His name is user name, hopefully he will respond otherwise shoot him a PM
#5
Rennlist Member
Is anyone using or consider using a GPS enabled Speedometer such as this one from Autometer (no affiliation)?
Am having problems with my speedometer.
Can't seem to get the needle to move smoothly.
Been months. Checked all the wiring from the trunk etc.
Found no continuity problems . Needle moves in steps.
All other gauges operate normally.
Am having problems with my speedometer.
Can't seem to get the needle to move smoothly.
Been months. Checked all the wiring from the trunk etc.
Found no continuity problems . Needle moves in steps.
All other gauges operate normally.
GPS's measure where you were, not where you are, and can have issues for any number of uncertified hardware reasons.
#6
Rennlist Member
I didn't know there was such a thing. Speedometer error should be a thing of the past. But GPS speed is not entirely reliable either, moment to moment.
Longer term GPS data could be used to calibrate the normal speedometer. Or something like the system in an optical mouse. Put new tires on the car, it would soon make a correction. Most new cars have GPS built-in, for one reason or another, so car makers shoul be doing this already. Maybe they are.
Longer term GPS data could be used to calibrate the normal speedometer. Or something like the system in an optical mouse. Put new tires on the car, it would soon make a correction. Most new cars have GPS built-in, for one reason or another, so car makers shoul be doing this already. Maybe they are.
It lies, and any given day, anywhere, may not work at all.
Cars use sensors measuring the rolling movement of the car.
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#8
Rennlist Member
To the OP: Mine isn't a Speedhut, it's a Chinese piece I picked up from eBay for about half the price of the Speedhut ($125-ish). The needle doesn't move in steps so much as it lags a little.
The only other issue with it is that it is also meant for use in boats and the dial is under a clear plastic dome, which catches reflections. I would have taken it off on installation, but I wasn't confident I could do so without breaking something. The reflections are annoying, but not a huge deal.
It's nice to know how fast I'm going again!
#9
Rennlist Member
I use a Garmin Nuvi dashboard navigator (no affiliation) which shows speed and warns if speed limit exceeded. Little or no variation with cluster speedometer.
#11
Three Wheelin'
Thread Starter
Thanks for all the info folks.
Wally having the speedometer cross Customs two times plus shipping sometimes makes it cost prohibitive as well as risky. My daughter received an empty iphone box from the brokerage and still waiting for a refund. I cannot risk losing y speedometer.
I have an old Pioneer Avic GPS unit that has a speed signal connection at the CE panel.
Sean/Shawn: for this purpose, which wire at the dash am I cutting and sending the new speed pulses to?
Please and thanks
Wally having the speedometer cross Customs two times plus shipping sometimes makes it cost prohibitive as well as risky. My daughter received an empty iphone box from the brokerage and still waiting for a refund. I cannot risk losing y speedometer.
I have an old Pioneer Avic GPS unit that has a speed signal connection at the CE panel.
Sean/Shawn: for this purpose, which wire at the dash am I cutting and sending the new speed pulses to?
Please and thanks
#15
Rennlist Member
The reason that $200 worth of tech cost $20k in a plane GPS, is the demonstrated accuracy and certification of VERY accurate under a range of conditions that a $8 SOC GPS is not build to provide.
And, there are constant NOTAMS concerning GPS testing that can cause GPS issues over many 10s of 1000s of square miles of the US on a regular basis.
They;re cool, but only measure where you were in the past.
Fix what ya have.