Michaelr11 Posted May 4, 2020 Share Posted May 4, 2020 I have a couple of Zumo devices on my bikes. I update the maps about once per year. So, I could use some clarification. When I install the new maps, I go through each of the routes that I keep around and recalculate them in Basecamp, then I send them to the Zumo so that the recalculated routes are using the same maps on the computer and the Zumo. Is it necessary to recalculate all of the routes? There are several folders on the Zumo that hold routes, some appear to be temporary. Can someone provide some light on which are needed and which aren’t? Thanks! Link to comment
AZgman Posted May 4, 2020 Share Posted May 4, 2020 I never recalculate my routes and they work just fine. Can I assume that you update the maps on both your computer and your Zumos? If not, you should. Link to comment
dirtrider Posted May 4, 2020 Share Posted May 4, 2020 15 hours ago, Michaelr11 said: I have a couple of Zumo devices on my bikes. I update the maps about once per year. So, I could use some clarification. When I install the new maps, I go through each of the routes that I keep around and recalculate them in Basecamp, then I send them to the Zumo so that the recalculated routes are using the same maps on the computer and the Zumo. Is it necessary to recalculate all of the routes? There are several folders on the Zumo that hold routes, some appear to be temporary. Can someone provide some light on which are needed and which aren’t? Thanks! Morning Michaelr11 Simple answer is yes you should recalculate to the new map, more complicated answer is you only need to re-calculate if you want the routes that you had before to follow the roads on the new map (but even this can fail if you don't verify the recalculated route against the old route, or better yet, verify against a track). Even then that might not be possible if a bridge is closed or a freeway exit is closed, changed, or altered, or an old road is closed or moved). In a nutshell--- If the new map contains few if any updates in your area then your original route should run perfect. But what if a 2 way road was changed to a 1 way road on your new (latest map)? Your original route wants to still use that road in both directions so it will route OK going in the 1 way direction but will still try to route you over it in the incorrect direction going the other way. You can still ride it with an older route as it will figure out a detour but that might not be the way that you want to ride it. Or if your route also goes to 3 other riders to use it could re-route differently for each rider. I have found that new added round-about's can also change how a GPS handles a route if you don't have a shaping point placed just after the round-about on the road out of the round-about that you want to take. You (or your GPS) will eventually figure this one out but it usually involves a back track or stopping to figure it out. The BIG got-ya that comes to mind is something that happed to me a couple of years ago, I was on a group off-road ride that I was leading. We were going to stop at a state game area for a break & snacks. I made the route on a current CNNA NT map. I then sent the route & corresponding track to 12 other riders. Some of those riders had the same map that I made the route on, some had an older map but also looked at the track that I sent to verify the route, & some had a different CNNA NT map & were too darn lazy to verify the route against their map with the supplied track. Problem was, the old way into that game area was a road into the rear of the area, on that road there was a deep river crossing over a bridge, that bridge was washed out so 'that' road was closed going into the game area. To make that area more easily assessable a road was cut into the game area from the front, my latest CNNA NT map showed this new road so my group & one other group made it in OK (as we ride pretty fast so we usually break up into groups of 3). 2 of the groups were led by riders with older maps that didn't show the new (routable) road in so it tried to route them in over the old rear road (a 6 mile ride-around that ended at a closed bridge). Luckily one of the riders in those lost groups had also installed the track that I sent so they finally found their way to the front road & into the game area. Another one that comes to mind is, I have friend up in Michigan that lives just off a newly added & newly opened freeway exit/entrance. If I use an old route, made on an old map, it puts me off the freeway on the east side of town (only exit existing at the time that route was made) so I have to ride about 4-5 miles of congested traffic through town to get to his place. If I recalculate that route to my new CNNA NT map it takes me to, then off at, that new exit. Now this could be good or could be bad depending on IF you want the best most convenient way of getting there or want to continue to use the old way. So this one could go either way depending-- But "what if" they eventually close that east exit/entrance as the entrance part is a left hand lane (fast lane side) entrance? I have a folder on my computer marked "obsolete routes"-- I only keep a route (even recalculated one) for a year then it goes into that "obsolete routes" folder (basically there for reference only, or to sometimes use as a starting point to make a fresh route). If I have a route that I really like & want to keep forever I make a "track" of that route as a track will show the original route intent even if the roads, exits, etc are no longer on the newest maps. There will be no turn by turn directions but it is easy to make new turn by turn route from a track on any new or future CNNA NT map, or even on other mapsets like Open Street, or other routable maps. 2 Link to comment
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now