GPS speed question
#1
03-27-2014, 03:47 PM
GPS speed question
Does anyone know FOR SURE if the speed displayed on the 6.5 screen on the GPS is actual GPS speed or if it is calibrated from the bike itself like the speedometer?
Mine is uncanny how close the gauge and the GPS read together, makes me think maybe it's not GPS speed at all....
But I've been wrong before. Reckon I could grab the GPS out of the truck and double check it...
Mine is uncanny how close the gauge and the GPS read together, makes me think maybe it's not GPS speed at all....
But I've been wrong before. Reckon I could grab the GPS out of the truck and double check it...
#3
03-27-2014, 06:44 PM
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SPEEDO vs GPS
My 2014 Ultra speedo and GPS read the same.
The Garmin GPS reads approx. 3.5 mph slower when compared at speeds from 40 mph up to 80 mph.
I suspect the Garmin is more accurate as the speedo and Boom GPS are identical. That being said I trust the Garmin for accurate speed readings.
Now how do you figure your gas mileage, speedo miles or GPS miles ??
The Garmin GPS reads approx. 3.5 mph slower when compared at speeds from 40 mph up to 80 mph.
I suspect the Garmin is more accurate as the speedo and Boom GPS are identical. That being said I trust the Garmin for accurate speed readings.
Now how do you figure your gas mileage, speedo miles or GPS miles ??
#5
03-28-2014, 07:16 AM
#6
03-28-2014, 07:17 AM
My 2014 Ultra speedo and GPS read the same.
The Garmin GPS reads approx. 3.5 mph slower when compared at speeds from 40 mph up to 80 mph.
I suspect the Garmin is more accurate as the speedo and Boom GPS are identical. That being said I trust the Garmin for accurate speed readings.
Now how do you figure your gas mileage, speedo miles or GPS miles ??
The Garmin GPS reads approx. 3.5 mph slower when compared at speeds from 40 mph up to 80 mph.
I suspect the Garmin is more accurate as the speedo and Boom GPS are identical. That being said I trust the Garmin for accurate speed readings.
Now how do you figure your gas mileage, speedo miles or GPS miles ??
#7
03-28-2014, 08:09 AM
Stellar HDF Member
Trending Topics
#9
03-28-2014, 12:56 PM
What I learned...
My speedo and the digital readout on the GPS screen stay identical. Tells me they read the same place.
With cruise set at:
50 (bike) GPS reads 48
52 (bike) GPS reads 50
75 (bike) GPS reads 72
78 (bike) GPS reads 75
And when I went to 100 (bike) GPS read 96
Tells me my speedo calibration is off by 4%.
I will play with the PV2 later, and see if I can get that corrected.
My speedo and the digital readout on the GPS screen stay identical. Tells me they read the same place.
With cruise set at:
50 (bike) GPS reads 48
52 (bike) GPS reads 50
75 (bike) GPS reads 72
78 (bike) GPS reads 75
And when I went to 100 (bike) GPS read 96
Tells me my speedo calibration is off by 4%.
I will play with the PV2 later, and see if I can get that corrected.
#10
03-28-2014, 10:40 PM
OK.
The digital readout on the NAV screen reads from the ECM, not the GPS.
I put in some bogus PPU numbers and the speedometer and the digital readout on the NAV still read identical.
I made a change to my PPU numbers from stock, and then rounded out just a bit. Rode both slow and fast, and my speedometer and NAV digital readout still match exactly, and are dead nut with my Garmin unit. Garmin unit can go back on the bench.
I can think of worse ways than riding and fiddlin' with the bike to spend a sunny warm day off....
The digital readout on the NAV screen reads from the ECM, not the GPS.
I put in some bogus PPU numbers and the speedometer and the digital readout on the NAV still read identical.
I made a change to my PPU numbers from stock, and then rounded out just a bit. Rode both slow and fast, and my speedometer and NAV digital readout still match exactly, and are dead nut with my Garmin unit. Garmin unit can go back on the bench.
I can think of worse ways than riding and fiddlin' with the bike to spend a sunny warm day off....