HMR said:
...trackpoints are sampled on the SP so the trace is logged with a reasonable precision.
That's really all I think most people want or need.
HMR said:
...If I assume the same precision in the various SP models this means that ... the SP2720 with 10000 points can log around 20 hours of driving. On small curvy roads that is.
That's at least a long weekend's worth of riding on small curvy roads.
HMR said:
The 276C and the 60C can do two tricks more ... by sacrificing some precision you can make the device to log 3 times the distance or time. Boils down to 60-180 hours of driving.
Not really much benefit in that - if you are riding in your home area, you can easily dump the tracks to your computer once every 20 hours of travel, as you pointed out above, and if you are going cross-country, you'll need to have a laptop with you anyway if you are using a 2x6, because the data chip won't hold enough map data for a cross-continent trip. So, when you stop to load new maps on your data chip, you can download your tracks.
HMR said:
...Now the total track length is 120-360 hours of driving. Enough for a serious vacation!
God, I know commercial truckers who don't do that much travel in a month of work. I don't know what kind of vacation 360 hours of riding would be, however, I am not anxious to find out.
HMR said:
Still more: the 20 (15 on 276C) named tracks can be uploaded from the PC and used as routes. These tracks sits in a separate memory while the logging to the 10000 point active track memory works as usual.
Right, but what value is it to the average motorcycle rider to have the ability to navigate 20 different tracks? One I can understand (perhaps to lead a group of friends along an interesting path), but 20? I think the capability of re-navigating 20 different tracks was put there for fisherman and mariners, who don't have the advantage of either autorouting or directional signs on the surface of the water.
If a rider really needs the ability to navigate (again) over multiple past tracks, there are 3rd party software applications out there that will convert a track to a route. Because all the automotive GPSRs made in the past 4 years support automatic route creation, and because you can 'fine tune' a route with MapSource to overlay an existing track - and then save it as a route - there has been very little demand from drivers or riders to be able to navigate saved tracks. It is, however, important to the marine community, which is why the 2x6 and 3x6 support it.
Michael