Originally Posted by
gauvins
- TBT navigation on Garmin Edge (I've used the Touring model) was a nightmare. Be sure to check off the "update route" option (or whatever the name is now). Otherwise your carefully planned route may be replaced by something that will not make any sense, the moment you stray from your initial plan.
- If/when you ride off a planned route, your Edge can no longer suggest a direction (although, it may depend on the model. Some do not have maps+routing tables and will become useless if you drift away). Normally, if/when you return on a planned segment though, tbt nav should resume.
The feature is "Recalculate" (I'm pretty sure it's the same on all the units). There are options for "Off", "Automatic", or "Prompt" (this might be a bit different on different unit).
The unit won't "suggest a direction" with it Off (that's kind of the point).
The newer units can "suggest a direction" back to the track (but Recalculate has to be enabled). This works OK.
The units seem to have a strong preference to get you back to the track as soon as it can. U-turns are generally going to be the fastest way back to the track,
(On the 800, the recalculation abandoned the loaded route and calculated the shorted route to the end point.)
In any case, the map shows the track. You can use the track for navigation even if you aren't on it.
Originally Posted by
gauvins
So, back to your concern. I'd try (driving) a simple route with and without recalculate to determine how your Edge recovers. Ideally, do not recalculate -- if you stray, TBT will stop working; what happens once you've returned to your route? Increase the complexity and see if your previous conclusions still hold.
This isn't true for the newer units. They pick up the route TBT once you return to the route. This is a basic feature: if it doesn't work, something is broken. (The Touring was a bit of a dog: I had one and sold it).
This works reasonably-well for my 1030 (the 1000 might be different).
Anyway, if you want to mostly follow the track, you don't really need the recalculation enabled. It's easy and simple enough to do a U-turn.