Originally Posted by
Carbonfiberboy
HRMs. Have to be coded, so you don't pick up each other's. Decide on ranges before the ride, depending on how you want to train that ride, how tired, etc. We sometimes use different ranges, depending on how fresh one of us is.
+1. If you're training to be faster, and or ride farther on the tandem, training by HR is your best option, and will help with sharing the work.
You really do need to have them coded. For awhile my wife was using a non coded HRM, and she was reading off my HR. We'd be climbing, and I'd be at 170 bpm, pretty much dying. She'd be chatting away, reporting a HR within 1 or 2 beats of mine. I knew she was not that much stronger than me.
Turned out that she was in fact reading my HR.