[OSM-talk] Choice of GPS for bicycle use in London

Mon May 22 12:35:13 BST 2006

Here is what it looks like.

http://wiki.openstreetmap.org/index.php/Image:ETrex_back.png  

As far as I can remember I purchased the mount from the GPS supplier but it
was not a Garmin mount. It is certainly sturdy and I have had no issues at
all with it in the last 2 or 3 years of use. The part that fits on the
handlebars is a simple clamshell ring with a single screw. I use a thin
strip of rubber inside the ring to fit my thin handlebars. Both the mount
and the back slip are made from the same plastic. I daresay if I hit the
whole setup against a hard object I might break it all but this has not been
a problem to date and certainly its fine on really rough tracks. The clip
really does lock into place so no danger of the GPS flying off.

Cheers,

Andy

Andy Robinson
Andy_J_Robinson at blueyonder.co.uk 

>-----Original Message-----
>From: talk-bounces at openstreetmap.org [mailto:talk-
>bounces at openstreetmap.org] On Behalf Of Steve Chilton
>Sent: 22 May 2006 11:55
>To: talk at openstreetmap.org
>Subject: RE: [OSM-talk] Choice of GPS for bicycle use in London
>
>Andy
>
>Your image doesn't make it clear whether you are using the official
>handlebar-mount from Garmin or not.
>Can you expand on the fixing? How robust is it on rough ground?
>I have a Trex which I was about to source the handlebar mount from
>someone to save carrying it on neck cord!
>Cheers
>STEVE
>
>Steve Chilton, Learning Support Fellow
>Learning and Technical Support Unit Manager
>School of Health and Social Sciences
>Middlesex University
>phone/fax: 020 8411 5355
>email: steve8 at mdx.ac.uk
>
>Big Shave for Wateraid - after PICTURE at:
>http://www.mdx.ac.uk/www/gem/bigshave.htm
>
>-----Original Message-----
>From: talk-bounces at openstreetmap.org
>[mailto:talk-bounces at openstreetmap.org] On Behalf Of Andy Robinson
>Sent: Monday, May 22, 2006 11:05 AM
>To: talk at openstreetmap.org
>Subject: RE: [OSM-talk] Choice of GPS for bicycle use in London
>
>
>Yes, my Garmin eTrex Legend (B&W) produces poor track data (ie very poor
>accuracy) in the urban canyon and below tree cover (leaves really do
>confuse the poor thing). The resultant track is clearly a Garmin fudge
>and mostly it would be better if it did not record it at all. I hadn't
>thought of transferring the NMEA data rather than the Garmin format from
>the GPS but will do some testing on this and see if at least the poor
>data can or cannot be weeded out effectively.
>
>There is no doubt that the older eTrex range is poorer than the more
>recent 60's. In fact we used the two in parallel in Manchester the
>weekend before last and the 60's definitely performed better although
>all were a long way from ideal in the inner city with track definition
>average or poor at best.
>
>What is really needed is a like for like comparison between the various
>units in these difficult areas of coverage. At the moment it's pretty
>pointless heading into the city centre with these traditional handheld
>units. For Manchester I have found the historic maps and local
>observation and pictures is more accurate than the gpx for laying down
>the compact street layout.
>
>See here Manchester city centre, northern quarter:
>
>http://www.openstreetmap.org/index.html?lat=53.4805950801913&lon=-2.2329
>32&z
>oom=14
>
>However, when away from the city centre, that includes normal
>residential areas, industrial estates and rural settings I find you
>can't beat the simplicity and general ruggedness of the Legend when
>mounted on the bike as
>this:
>
>http://wiki.openstreetmap.org/index.php/Image:ETrexLegend_onbike.png
>
>
>Cheers,
>
>Andy
>
>Andy Robinson
>Andy_J_Robinson at blueyonder.co.uk
>
>>-----Original Message-----
>>From: talk-bounces at openstreetmap.org [mailto:talk-
>>bounces at openstreetmap.org] On Behalf Of Barnett, Phillip
>>Sent: 22 May 2006 10:10
>>To: talk at openstreetmap.org
>>Subject: RE: [OSM-talk] Choice of GPS for bicycle use in London
>>
>>That's annoying. I've just bought a Garmin Legend CX, partly to take
>>part in OSM, and it's a bit galling if that unit generates bogus data.
>>Can anyone confirm this happens on Legend CX?
>>
>>(It's also annoying that I can't get track logs directly out using my
>>Powerbook, but have to turn on my ancient PC in the basement. I was
>>hoping to do some logging in North Wales this summer, but editing will
>>be a pain - and may have to wait indefinitely. Anyone have an update on
>
>>Garmin's 'Mac support in 2006' statement?)
>>
>>Phil
>>
>>-----Original Message-----
>>From: talk-bounces at openstreetmap.org
>>[mailto:talk-bounces at openstreetmap.org] On Behalf Of Christian van den
>>Bosch
>>Sent: 21 May 2006 16:59
>>To: Emil Vaughan
>>Cc: talk at openstreetmap.org
>>Subject: Re: [OSM-talk] Choice of GPS for bicycle use in London
>>
>>Emil Vaughan wrote:
>>
>>> I'm not clear on what would be the best for osm, as this will
>>> probably
>>
>>> be the only thing I use it for.
>>
>>I've been using an eTrex Vista with handlebar mount here in Cork,
>>Ireland; mostly it works quite well, but is pretty useless on narrow
>>streets, especially given Garmin's stupid, stupid, stupid "oh. I've
>>lost signal. let's extrapolate track log points according to the course
>
>>and velocity at the moment I lost signal".
>>
>>This might not sound like a big deal, but in the city I most often lose
>
>>signal when turning a corner into a narrow street, so the Garmin
>>extrapolates according to some course being followed mid-turn,
>>resulting in a nice plausible-looking straight line of completely bogus
>
>>points.
>>
>>The Garmin's NMEA output at least tells the truth, but still gives very
>
>>little useful data on narrow streets, so I've just picked up a Sirf
>>Star III-based Holux 213 for $35 on eBay. This should by all accounts
>>work happily in the depths of my backpack, where I can hook it up to
>>some small device like a PDA, subnote or perhaps a Linksys NSLU2. You
>>mentioned a Zaurus - you wouldn't have a good (cheap, reliable) source?
>>
>>Cheers,
>>
>>Christian / cjb
>>
>>http://www.cjb.ie/
>>
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