Bizarre!
Edit.... When I came in here earlier, there was no post from you. Just the title. A glitch of the forum software I guess.
Anyhow................
Have you simply gone out after warming up and then going full bore for till you can't anymore? Relying on the peaks you see on your rides is a poor way to determine max HR.
I don't reach my max HR of a few years ago either. Max HR doesn't really tell you how fit you are so put any thought of that out of your mind. The more fit I get, the less HR it takes me to do better times for efforts I used to be slower at and had a higher HR doing them.
Last edited by Iride01; 06-03-20 at 01:14 PM.