I upgraded our electronics for Saturday's ride. Removed Stoker's Cateye Astrale and my Polar HRM. Added a Garmin 800 with the performance package for Captain and a Bontrager Node 2.1 for Stoker (thanks, Ritterview). Stoker retained her Polar HRM. With this system, Stoker sees my HR on her Node, as well as her HR on her HRM. I don't need to see her HR. The effect of this is much faster acceleration and much greater ease in a paceline.
If I'm going harder than she is in a paceline, she immediately picks her HR up, which causes me to ease off, then she eases off, and soon we're in equilibrium and staying a foot off our wheel. Coming into a climb or bridging up, there is a slight lag as my HR comes up and then she comes up to match it, but I'm sure not complaining! If we each had a powermeter, it would be instantaneous, but it doesn't need to be. What a difference, anyway! Highly recommended for the motivated team.
We had a great ride. It was fairly easy at only 2500' of climbing in 73 miles, but we made up for that by going harder, averaging over 16 which is very good for us. Maybe a record for that distance. My knee is OK again. We were both in the hardly-able-to-walk-to-the-beer state at the end.
Once we figure out how to navigate with the Garmin, we'll trade electronics. She'll have the 800 and I'll have the Node. I'm the electronics pioneer for the team.