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| Brand: Garmin
Category: CE
List Price: $59.99
Buy New: $29.99
You Save: $30.00 (50%)
New (93) Used (1) from $40.50
Rating:  52 reviews
Media: Accessory
Autographed: No
Memorabilia: No
Fragile: No
Batteries Included: No
Size: Garmin Part #010-10644-00
Shipping Weight (lbs): 0
Dimensions (in): 3 x 2.2 x 2.7
Legal Disclaimer: Warranty does not cover misuse of product.
MPN: 010-10644-00
Model: 010-10644-00
UPC: 653886002028
EAN: 0653886002028
ASIN: B000BFNOT8
Availability: Usually ships in 1-2 business days
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| Customer Reviews:
 Excellent compact lightweight wireless cadence sensor November 22, 2007
31 out of 31 found this review helpful
Another handy piece of equipment from Garmin!
This kit comes in three basic parts; a sensor unit, which is about the size of a matchbox, and two magnets about the size of your pinky nail. Several zip-ties are included for mounting purposes; the entire kit weighs at most a couple of ounces.
Installation is pretty straightforward, but do follow the directions carefully and don't snug down the zip-ties until you're sure you've got all three components just where you want them and have tested the system!
The sensor mounts to the left chain stay with a pair of zip-ties. Garmin thoughtfully added a piece of rubber padding to the bottom of the sensor unit, so it won't rough up your fancy carbon frame or your paint job :)
A single zip-tie attaches the crank magnet to the crank, although I had to use a large (3/4") shim on my FSA crank (which has a curved profile and a hollow back) to place the crank magnet in the proper position for the sensor to "see" it. The spoke magnet clamp has both a round hole and a square hole; make sure you use the right hole for your spoke profile! I mounted mine on a spoke directly opposite the tire valve, just to help keep the wheel in balance.
The sensor unit must be positioned along the chain stay such that it can "see" both the crank magnet as it passes by the cadence sensor (the round part on the side of the sensor unit), and the spoke magnet as it passes the speed sensor (the part that looks like a lever in the picture).
Testing is accomplished by pressing a small button on the sensor unit, which prompts it to flash a red LED, then a green one to indicate that testing is started. As pointed out by another reviewer, the LEDs are hard to see in bright ambient light; I'd recommend testing in a garage if possible. Hi-intensity LEDs would have solved this problem, although I suspect these LEDs were chosen for their low power consumption, so maybe it's a smart design decision after all.
Once the test button is pressed, the next 60 revolutions of the crank should cause the red LED to flash when the crank magnet passes the sensor, while the spoke magnet passing the sensor should generate a green LED flash. If you saw the red/green flash when the button was pressed, but don't see a flash as each magnet passes the sensor, chances are one or both magnets are not properly aligned with the sensor (there are alignment lines on the sensor and both magnets), or the magnets are passing too far from the sensor (this is the problem I encountered and solved with a shim).
When you're sure everything is in the right places, snug the zip-ties and cut them flush. Then set up a screen (typically the Biking screen) on your 305 to display Cadence in one of the data fields, and go ride!
 Review for Garmin's speed cadence sensor September 7, 2007
0 out of 1 found this review helpful
I read many reviews on this product that warned me about the battery sent with the unit needed to be replaced. I didn't have that problem. My problem is that I can't use the sensor with my mountain bike (Trek). The sensors that come with the device(3 counting the main unit) do not seem to align properly causing the product to not work.
What's wrong with it? August 4, 2007
3 out of 4 found this review helpful
That was my question when I was trying to get it set up. I thought the battery was dead so I replaced it. The forerunner I was trying to pair it with kept flashing an X across the cadence symbol, so I thought it wasn't working. Finally I gave up and started riding to test the rest of it. Once it started getting a continuous signal the forerunner showed the cadence symbol without the X through it and it displayed the cadence just fine. So far it seems to work great. This may be more of a complaint about the forerunner, but it is all one system. The forerunner should give some indication that it is properly paired. The flashing X gives the impression that it is not. It has also been mentioned by others that the setup light does not flash brightly or long enough to see it in normal daylight. Garmin should make a note of that in the setup guide so people don't mistakenly think it is not working... like I did.
Works extremely well. July 14, 2007
4 out of 4 found this review helpful
Unlike the Polar speed/cadence units, the Garmin is made to work from the rear wheel (great if you ride an indoor trainer) and its creative design allows it to catch both speed and cadence from a single unit. Impressive. Just be sure to get a new battery - mine, like others, came shipped with a dead battery.
A must have for you Edge 305 July 14, 2007
5 out of 5 found this review helpful
I bought the Edge 305 w/o the cadence sensor thinking I don't need it but I was wrong. Once you realize what the Edge can give you for information and you start to plot everything ( I use SportTracks )you became addicted and you want cadence chart too !!!
Furthermore, the sensor allows you to get speed even when there's no GPS signal ( tunnel, cities, etc). A fact that overlooked.
Easy to install and the red/green light tells you if the unit senses the magnets which have to run pretty close to the unit. I would suggest you test the unit on your bike in a rather dark area to make it easier to look at the ligth on the unit.
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