I searched last night for new handheld mappable GPS units and found some interesting results. My ideal road bike mounted GPS features are listed below in order of preference: 1. Lightweight and vibration resistant unit with sturdy, lightweight handlebar mount. 2. Long battery life with use of standard size replaceable or rechargeable batteries (AA). 3. Weatherproof/water resistant. 4. Properly functioning bike mode that would auto-navigate a route that a cyclist would likely choose between destinations (not like Garmin’s faulty bike mode). 5. Sensitive satellite antenna (for riding through forests, deep valleys or between tall buildings and to give accurate elevation data) 6. Large screen with energy saving features (minimal or no display between intersections unless one presses a button to turn the screen on briefly) 7. Able to handle bike trails by either integrating them into routes. 8. Affordable maps that aren’t locked to one GPS unit with affordable, yearly updates.
To date, the only units that come close in my mind are the Garmin 605/705 units. I don’t think that there is any real competition at this time. The main draw backs of the Garmin 605/705 units (2.2 inch, 176 x 220-pixel screen) are a short battery life and non swappable battery, a poorly functioning bike mode, inability to incorporate bike paths into routes, and expensive maps that are permanently locked to one GPS. While the Garmin eTrex units have replaceable batteries and are only a slightly heavier, the connection between the circuit board and battery panel is easily destroyed by road vibrations. Magellan markets several units which they claim are durable and weather proof but I am reluctant to try because of their size. If they met all of my other criteria, I would be interested but I am still waiting for someone else to report on their use for a brevet series.
The ASUS R300 is an inexpensive, small, lightweight (140 g) GPS with a 3.5-inch, 320 x 240-pixel screen and a handlebar mount accessory. The R300 has a bicycle mode, swappable rechargeable Li-Ion battery (1300 mAh), and a bluetooth and phone interface which allow you to listen to navigation instructions on a bluetooth earpiece and the GPS screen will transiently display caller ID, SMS messages received and act as a large number pad for touch screen dialing. A review in French (translated by Google) said that the device crashed several times while navigating a route and would not automatically recalculate the route if you went off track. The kiss of death is that it must be “protected from rain”, which makes is of little use on our bikes. However, this model and the Lowrance's XOG model demonstrates that the technology is almost there if they ever make a waterproof models! |
Alan Johnson
>
>
>...While the Garmin
> eTrex units have replaceable batteries and are only a slightly heavier, the
> connection between the circuit board and battery panel is easily destroyed
> by road vibrations.
I was given an etrex Vista Hcx for Christmas and certainly don't want
to destroy it with road vibrations!
Where did you learn about the problem with using a handlebar mount,
and how many cases did you find? I'm imagining a fix, and may just
keep it in the handlebar bag when the sun and heat reach seasonal
norms anyway, using the electronics to support and not replace my
superb skills with a map and cue sheet (hah hah hah).
--
Bill Gibson
Tempe, Arizona, USA
> I was given an etrex Vista Hcx for Christmas and certainly don't want
> to destroy it with road vibrations!
>
I really hate to get into yet another GPS discussion (flame war?) but my
answer might be helpful to others who have also recently revived a HCx.
I have mine mounted using the Garmin bike mount on a "Nub" sticking off
my stem. Either the Nub absorbs all the shocks or my GPS is immune to
the shock problem. To date I've had absolutely no problems with it
turning off and I've ridden two SR series and one 1200k. Here is a link
to a photo of my setup:
http://www.jkassen.org/C1200photos08/pages/P6280060.htm
I'm very happy with the GPS and would recommend to others without
hesitation. The "Bike Mode" is a bit too focused on minor roads for my
tastes so I leave it set to car mode and I do fine. Just don't blindly
trust it.
Unlike others, I don't often pre-program the GPS for a brevet. Rather I
leave it on so I can double-check myself if I think I'm off course and I
have interesting data to use after the ride. The cue sheet is still my
primary source for directions.
Jake
Your next post, of course, is to describe the neat double-stem
contraption you have, right? :)
Joe
> Your next post, of course, is to describe the neat double-stem
> contraption you have, right? :)
>
It's two "Oval" stems bolted together. Oval brand stems are ideal for
this since the faceplate bolts go in from the reverse but you can just
drill out the threads and do this with most steams. It's not the
lightest solution but works fine.
I did this because I needed a way of mounting my light and cue sheet
without taking up any additional room on my bars, which are already
cluttered with cross levers. I want my hands to have plenty of gripping
area on the tops of the bars. Here is a photo with the cue sheet holder
attached:
http://www.jkassen.org/C1200photos08/pages/P6280049.htm
Jake "Posted this before" Kassen
All the weight weanies on this list will miss out, then. :)
> I did this because I needed a way of mounting my light and cue sheet
> without taking up any additional room on my bars, which are already
> cluttered with cross levers. I want my hands to have plenty of gripping
> area on the tops of the bars. Here is a photo with the cue sheet holder
> attached:
I dig the dash setup. Do you find it gets squirrely or blows around on
the descents?
>
> http://www.jkassen.org/C1200photos08/pages/P6280049.htm
>
> Jake "Posted this before" Kassen
Ahh. I see that in my archives. I *really* do read every post. :)
Joe