Their are a couple of threads on it over on the Zumo Forum. Sounds like folks have it working. Do a search on "jawbone" and you will find them...

 

Jinks, are you referring to a more accurate odometer versus speedometer? The GPS updates to determine speed lags your instant speed because it is averaging speed as you accelerate and decelerate based on position (which also lags a little). I wouldn't rely on it to be real accurate unless you're on cruise control on an open road.

 

Like many have said, I think you'll find many more uses for it after you have it than you realize. We just got back from Helen, GA last weekend ( beautiful area ). We were on one of the many good roads in the area and I could see the fun stuff coming up. I didn't know it until we got home but my wife snapped a pic after we got through a section of twistys.

[IMG]local://upfiles/1975/A0A876F2CBCF4799A020721A28019621.jpg[/IMG]

 

I really like chrome so spending a lot on a zumo was out of the question. I will admit I would have liked to have gotten the 550. I can buy a lot of chrome or other important thngs for the bike- like oil cooler stablizer etc.
I have the old garmin 2610 and it does everything I want it to do. You can connect it from the hard wire to the H&K radio and hear it if you want, I just use the cigarette power and it has the speaker connected to it. It is mainly in my saddle bag or on my pc desk. I only use it for trips for fuel, food, and hotel mostly. I do at times have to go to places I need to go to by a address and it does that to. The speedo is very accurate according to our state police. Even IBA took the miliage on several of my IBA rides with out a thoght.
I can stand $150 for the 2610 a lot easier than the zumo 550 price

 

I've had the 550 for over a year and wouldn't be without it. One of the features I like is to be able to switch from kilometers to miles as I visit the USA quite often.

 

Another good rason why I like my GPS is when riding in the mountains it lets you see how sharp the curves are prior to entering them. It helped out a lot on the BRP.

 

Do the Zumo 550...much more than just a GPS!
Bike mount, car mount, MP3, audio books (audible.com), XM (capable), bluetooth and MUCH more!

http://pcnation.com

Do it once...do it right.

 

Well fortunately, or unfortunately depending on your point of view, the speedometer (and I do mean speedometer NOT odometer) on the Zumo is MUCH more accurate than any of the HD speedometers that I have checked. Now you may rightly ask "but how do you know that the Zumo speedometer is the one that is accurate and the HD speedometer is the one that is inaccurate"? Well, I have used my Zumo in 3 of my cages and in all 3 cases it and the speedometer in the cageare almost exactly the same. In particular the speedo in my Cadillac Deville is digital and very accurate and when I use the Zumo in my caddy the two agree within 1 MPH. The speedo on my RKC is always at least 3-4 MPH faster than my Zumo. And I have two other friends who use their Zumo's on their HD's and cages and their results are similar.

So, based on my own and my friends real world experimental results I conclude that the speedometer on my GPS, in this case a Zumo, is indeed very accurate.

 

GPS's in general, and the Zumo in particular, are absolutely amazing! Here's what I emailed to some of my riding buddies after a little ride this weekend...


Coming home, I left a day early on my trip with the Pennsylvania Boys a couple weeks ago. The forecast was for rain the last couple days (like most of the first five), I had an article to finish, and so instead of taking two days to come back home I went ahead and slogged home in one, alone. I originally had thought we were staying in the Cumberland Gap area and in the days leading up to our departure I didn’t bother gathering up any maps of Kentucky or Tennessee. As it turns out I should have paid a little closer attention to the web site URL that Earle sent out – we ended up way past Cumberland Gap... and were actually in middle Tennessee.

Long story, short – I didn’t have a clue where I was on the morning I was getting ready to come back. But two quick screen presses and the Zumo had me routed down an hour’s worth of small secondary roads to I40 and, thence, to home. It even told me down to the mile how far it was (a little over 600); and the exact minute I could expect to be rolling up my driveway (about ten hours later). All before I even pulled my helmet on.

Even after using it nearly a year, it strikes me as a miraculous kind of thing. After a while you kind of get used to it knowing the local roads you use it on all the time. But then you go on a ride far, far away and you see all those dinky little roads rolling past on the screen and it knows them all and points you where you need to go and you just kind of shake your head in wonder at it all.

Last weekend I wired up a second mount so I could use it on the Harley. Quick on/off, looks pretty clean when it’s off, and it gives me a second BMW-type electrical plug on the Road King. Got up early this morning and, exploring one of the Mad Maps routes that Garmin sells (I bought the mid-Atlantic package which includes 28 “scenic” routes - $12), I ended up going through Winchester, and then on to Berkley Springs and beyond. The route included a very cool route (rt. 901) I had never been on. The route ended in Hagerstown and normally I’d have jumped back on I81 to get back home – as I don’t know any of the roads up there. But instead I punched in Winchester HD (previously saved as one of my Favorites on the Zumo). I wasn’t interested in the shop itself (it’s closed on Sundays), but just wanted to get back to that general area – a few miles east of Winchester. From there I could jump on some of the good roads I ride all the time.

What a pleasant surprise! I had “avoid interstates” and “avoid highways” activated in the Zumo and, sure enough, it directed me down a maze of tiny little roads. Including taking me down Summit Point road and past the racetrack, an area that holds many memories from my early years in motorcycling. I’ve not been back there but a couple times in recent years and it was nice to ride through there. Got back right at 3pm, just as a bit of rain began to fall. Excellent day.

They’re not perfect. West Virginia, in particular, has a few errors in the mapping software. LOL. But all in all I think GPS’s are second only to electric clothing as the most impactful accessory that a motorcyclist can avail themselves of. They’re just astonishing in their utility.

 

I use my Nuvi 750 on the bike all the time..thought about buyinga Zumo but really dont know what i would gain other than waterproof case.