MrJacques Posted July 24, 2018 Share A GPS will cut corners as well. How much depends on the recording interval, but on twisty trails you will notice a difference compared to a normal speed sensor. Link to comment Share on other sites More sharing options...
Jaco Steyn Posted July 24, 2018 Share On my Garmin Edge 705 the distance over a previous CTCT route differed by less than 100m compared to my "back-up" Ryder cycling computer. That's a difference of 0.09%, and I doubt you will get it any better than that. The Garmin only use the GPS for speed and distance, and I VERY painstakingly made sure about the circumference of the wheel that had the magnet attached to it for the speed and distance on the Ryder cycling computer. Link to comment Share on other sites More sharing options...
jdwet1980 Posted July 24, 2018 Share Taking the average of a lot of inaccurate coordinates. But its awesome! Link to comment Share on other sites More sharing options...
dave303e Posted July 25, 2018 Share Taking the average of a lot of inaccurate coordinates. But its awesome! Care to expand? Link to comment Share on other sites More sharing options...
SwissVan Posted July 25, 2018 Share Slight hijicack I was wondering the other day how accurate avg speeds are via GPS cycling computers.... I’m sure my avg speed has declined drastically since the days of non gps.... despite being pedantic about setting the correct wheel diameter..... #loveyourage Link to comment Share on other sites More sharing options...
MrJacques Posted July 26, 2018 Share Slight hijicack I was wondering the other day how accurate avg speeds are via GPS cycling computers.... I’m sure my avg speed has declined drastically since the days of non gps.... despite being pedantic about setting the correct wheel diameter..... #loveyourage I think it depends on the quality of the gps software as well and how accurate the gps location is. Link to comment Share on other sites More sharing options...
MrJacques Posted July 26, 2018 Share GPS is only accurate up to a few meters and even doing the same course (even multiple laps on the same course) there will be some variation. Link to comment Share on other sites More sharing options...
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