Active Community: Message List - GPS or Cycling Computer?

Re: GPS or Cycling Computer?

Drew55 — Wed, 26 Nov 2008 14:11:15 GMT

Woland,

Would probably be best not working with REI, but go directly to GARMIN, describe the symptom and see what they say, Once I did, it tool about 10 days for them to get me a refurbushed model and it's not shut down again since. Prior to swapping it out, the only option i had for getting an accurate reading was leaving the display unit in a pocket just pulling it out ot get a reading then return it. If it was mounted on the handlebars, it would usually remain on until i hit the first bump of any type then shut down. Plus I only had to return the basic unit, not the rest of it. all the mounting brackets, etc remained on my bike

Re: GPS or Cycling Computer?

Drew55 — Wed, 26 Nov 2008 13:57:17 GMT

Jeeprockrawler,

Whle using some type of superglue to mount it directly onto the spokes is a option, I got one about the same physical size from magcraft, pried the old one out and used a drop of super glue (although not really needed) to ensure it remained inside the metalic mount the original one was in.

Re: GPS or Cycling Computer?

Woland — Wed, 26 Nov 2008 13:55:38 GMT

Drew55 - well I did not return 305 to REI yet - the thought of having to strip all the stuff (mounts, magnets, cadence sensor) off my bike and then spend another hour or two attaching replacement... But I notice that if I wedge bike light fairly close to Edge 305 - so that it pushes against it and prevents it from moving freely and (hopefully) rattling - then I have the switch off problem more or less under control. I will investigate attaching some rubber (old broken "Livestrong"bracelet would do) to 305 to minimize it's ability to rattle if I do not have bike light on handlebars.

Re: GPS or Cycling Computer?

omabikeryder — Wed, 26 Nov 2008 01:05:50 GMT

How do you mount the rare earth magnet to your bike spokes?

Re: GPS or Cycling Computer?

Drew55 — Tue, 25 Nov 2008 23:18:25 GMT

Substituting a rare earth magnet for the original one is one solution to that dilemma. The rare earth magnets are considerably stonger and as such aren't as suseptable to "falling out of allignment" as long as its within a zone that is about 3-4 times larger than with the commercial magnet it came with. Buy a package and just share them with your local friends that have the same issue.

Re: GPS or Cycling Computer?

Jeeprockrawler — Tue, 25 Nov 2008 21:36:02 GMT

Hey,

Just thought I would add one thing I came across with my computer recently. The roads on the race I did were really rough at times and my sensor kept getting off alignment so most of my miles were not logged. That is frustrating when you are doing a century and not sure how far along you are...

Re: GPS or Cycling Computer?

Drew55 — Tue, 11 Nov 2008 21:04:25 GMT

Woland,

My 305 shut itself down on occassion, but Garmin was happy to replace it - hasn't happened since. The 705 has a few more features, and as soon as I've got the extra cash to pick one up, I'll be upgrading. - can't beat it especially now that it can read in from other AMT devices such as a power hub and give some serious infomation on the ride and metrics it took to do it.

Re: GPS or Cycling Computer?

omabikeryder — Tue, 04 Nov 2008 02:03:48 GMT

"My cycle computers are within 0.2 MPH and a fraction of a mile (<0.5mi) of my Garmin Nuvi for speed and distance. This is really amazing b/c my car and motorcycle are both >3-4 MPH off for speed and similarly distance."

Not so amazing. You have to plug in a number into your cycle computer for the algorithm to work. The best way is to do that is with a radial run out, actually measure the distance of one wheel rotation. With that number your calibration should be dead on. You don't have that option with a motorized vehicle.

Re: GPS or Cycling Computer?

Woland — Mon, 03 Nov 2008 02:52:49 GMT

One - somewhat serious issue with Gramin Edge 305 seems to be that it switches off randomly. After somebody suggested that it is due o bad design of battery springs that is prone to lose contact if unit is sibjected to stronger vibrations I tried pushing the headlight bracket against Garmin to minimize vibration (Edge own mount allows small but non-negligible amount of play which contributes to vibration problem). After I started doing it the random switch-off problems disappeared. This really was the only issue I ever had with Edge 305.

Re: GPS or Cycling Computer?

reywalwen — Wed, 22 Oct 2008 05:19:43 GMT

my cycle computers are within 0.2 MPH and a fraction of a mile (<0.5mi) of my Garmin Nuvi for speed and distance. This is really amazing b/c my car and motorcycle are both >3-4 MPH off for speed and similarly distance.