Garmin Edge 305 Review

I have to admit the idea seemed really cool. A GPS device attached directly to the handlebars of my road bike. The possibliltes seemed limitless. Real time satellite positioning, heading, grade, and speed. Couple that with heart rate and cadence and it was hard to pass up the Garmin Edge 305. For me the huge selling point was that you could create and/or upload routes. I loved the idea of never being lost again. In the worst cases I could just turn around and follow the map that I had already created back home. And who could ignore the idea of a virtual training partner to keep the rides interesting when I had to do a solo ride. If I just got this I reasoned, I would be in biking heaven.
Well I have recently purchased the Edge 305 (265$ off ebay) and I have come crashing back down to earth. The learning curve was a little steep for me but after about a week of tinkering with the software I felt I was pretty well enough enabled to try the unit on a real ride. Installation was pretty easy. The unit comes with some plastic ties that hold on the cadence unit and the Edge itself. The on board software was pretty user friendly with four buttons controlling all the functions. Once the unit is powered up there is a satellite acquisition screen and the process can take anywhere from 2 to 5 minute to get a good signal, depending on the conditions. The main screen is customizable up to eight windows simultaneously and if you are a numbers geek you are in heaven. Speed, Cadence, Heartrate, Grade, Heading, Elevation gain, it's all there. There is a screen specifically for elevation with speed and distance and some screens that are essentially menus for checking data and customization.
I was excited to try the mapping functions and was very disappointed with what the unit had to offer. With the software that ships with the unit there are no road labels and the maps are black and white. Pretty hard to read while cruising along in a pace line. There are websites for uploading routes directly to the unit and I found this to be the most useful aspect of the mapping functions. Motionbased.com is the best site I have found for doing uploads. There is a local metric century with several big climbs that I use for training and the maps I downloaded from motionbased.com were excellent with indicated turns and roads that were labeled.
The speed and cadence functions work pretty well but I was really looking forward to having one unit that I can switch between bikes. The 305 comes with an extra mounting bracket but since you have to purchase a additional Speed/Cadence sensor to use on a second bike the cost tends to creep up. Moreover, you have to have the Garmin "detect" the cadence sensor when changing bikes so you would always have to spend time setting it up before riding. So there is not really a good way to quickly change the 305 to another bike and still have all the functions the unit provides. This might be acceptable if your other bike is a Mtn. Bike.
Another problem is that the 305 would often loose satellite reception and auto pause. This was to a large degree modulated by having the Cadence/Speed sensor installed since when it lost reception it just would use the speed from the Cadence sensor and scan for a better signal from the satellite until it found one.
But the biggest problem that I encountered with the unit is that it started to just switch off on me during rides. At first I did not know what the issue was. I knew that if the unit lost satellite reception (which it did frequently) it would auto pause. I thought maybe it was powering down during this process but to my dismay I discovered that that what was actually happening was that whenever I hit a bump the unit would simply turn off. I would have to start the unit up again, wait for the satellite acquisition to finish, then start the timer again. All of this while riding.
I broke down and contacted customer support at Garmin. They were very prompt at answering my email but their "solution" was to reset the unit and reinstall the software. To me this sounded like a software solution to a hardware problem and I politely let them know in a follow up email that their "solution" was crap. I would later find out after doing some research online that this is a form letter that they send to you no matter what complaint you register and if you email them a second time they ask you to send the unit back to them,at your expense, so they can repair it. I sent the unit back two weeks ago and I am still waiting to hear something.
I think the concept of the Edge 305 is good. But Garmin has not quite worked out the bugs with this particular model. If GPS is what you are looking for in a cycling computer I would wait for the 705. Otherwise there are several other computers out there lacking the GPS function that perform the other functions just as good or better than the 305.
Update: A few weeks later I received a unit from Garmin that seems to be working flawlessly. I have since installed two thin strips of rubber between the the back of the unit and the stem of my bike to provide cushioning during use.

