Most helpful positive review
10 of 10 people found the following review helpful
Easy Install, Great Sensor
on August 4, 2012
Other than not having the right wrench (15 mm) to remove a pedal, I had no trouble installing the sensor and magnets. Sync with the MOTACTV went exactly as directed, worked on the first try. I had no problem with finicky magnet-sensor spacing reported by others; left around a quarter inch gap and everything just seems to work fine.
One odd thing I noticed during install - the sensor has two LEDs which flash when they pick up the presence of a magnet, green for pedal shaft/cadence, red for wheel/speed. Except they only flashed for a short time - like, ten magnet-passes - then stopped. I thought the battery might have been weak, but a new replacement behaved the same. Maybe the LEDs are only meant to confirm a proper install, rather than flash every mag-pass. I don't know for sure but bottom line, everything works as expected, with or without the LEDs flashing.
I've taken two (update: 3, note at end) rides, one for fifteen minutes and another for over an hour. The sensor seems to provide good, consistent input to the tracker. Speed data is a lot "finer" - less jumpy than data derived from the gps alone, which makes sense. Cadence data is pretty cool, and a novelty for me.
For the 75 minute ride the MOTOACTV used 20% battery, which is about the same as similar rides I've tracked. For real time tracking the cadence input seems somewhat dampened, I guess to keep it from fluctuating wildly. This isn't a bad thing, and it catches up within a few seconds going from say, a no-pedal turn to resume full speed.
Speed data seemed very consistent with numbers shown on my ancient, hard-wired CatEye Vectra. As I said, this new indicated speed showed a lot less fluctuation and lag compared to the gps-only speed info I had before adding this sensor.
There were only five reviews when I ordered this sensor, and several were fairly negative. That's not been my experience, and while it's unfortunate some people have had problems - I think it's a fine piece of gear and I'm happy with it.
Made a quick third ride, mostly to see if the two-use limit reported by others would hit. Worked fine for me on ride number three, and I expect this will continue. If not, I'll update accordingly. :)