I did stages and it does not communicate with my garmin forerunner 735.

The Quarq is built as a power meter. Shimano cranks aren't. I've put 15+ Shimano based L/R cranks through my test protocol this year alone, none I'd be happy to use as a 'known good source' to compare other meters.

I put one Quarq DZero DUB through the same protocol, it just worked. I'll happily use the Quarq as a reference power meter.

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Shane Miller - GPLama
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Hi Shane. Thanks for chiming in. Someone kindly linked to your testing. It made the decision much easier! My Quarq is in the mail!!