Correcting odometer vs gps distance travelled

[fillerupmac]

I have a Juggernaut Classic HD, with the"SuperFat" (4.8 inch) tires. Initially there was a 10% difference between the odometer and my GPS. I spent much of yesterday's ride adjusting the wheel size in the DPC-14 until the distance traveled delta could be reduced. Setting the wheel size to 30 (!) seemed to be best.

Al Schlafli

 

[6zfshdb]

Be aware that there can be a significant error in distance measured by a consumer grade handheld GPS or smartphone app. When doing a comparison with such a device, do it in a wide open area with a clear view of the sky. The more satellites your GPS can "see", the better the accuracy. The best way to make a distance comparison is to use an accurately measured course.

 

[ebikemom]

You might be interested in a thread I started on this issue of odometer accuracy, based on differences I noted between my ebike and those of my family members in what the speedmeters say our speed is, and in what the odometers say distance travelled is. Lots of interesting info there from engineering types.

https://electricbikereview.com/foru...eters-why-arent-our-two-bikes-the-same.25382/