About 6mos ago, picked up a used power meter. Works awesome, ride any wheels I like, etc...
I replaced the large chainring with a SRAM 55t ring for training purposes. Then, about 1mo. ago, it stopped working. Garmin 500 apparently receives no signal whatsoever. I've tried my son's Edge 500 that picks up the signal from his PowerTap, and it doesn't work either.
I'm wondering if the magnet for the s975 has fallen off my frame (appears that way as I cannot see one). Either I knocked it off accidentally or maybe during a crash. Would that prevent the power meter from sending a signal? I thought they were only for calculating cadence and not directly measuring power output. Anyone confirm?
Bicycle Transportation: 2013 Ford Focus Electric, 2010 Toyota Prius
Hi, I know that my SRM will not send a signal without a "cadence" magnet. The SRM turns off after some period of time if it does not sense the magnet. I am hypothesizing that the Quarq works the same way.
Yes, the Quarq will give you nothing without the cadence magnet - it won't even turn on. With that Quarq, the magnets are either glued to the frame, typically right behind the BB, or for an external BB, it's attached to a flat ring that goes under the BB cup. If you see nothing, it was probably glued on and fell off. Use good epoxy paste and glue one on. You can download the manual to get instructions.