2017 - WindWarrior’s Magic FTP Estimation™ based on power:HR could predict FTP from interval data, triangulated and confirmed against 8-min, 20-min, 28-min, and 65-min threshold(+) efforts
2017 - Xert Magic FTP Estimation implemented as a Gamin data field
2018 - WKO Magic FTP Estimation
2019 - Garmin 530 Magic FTP Estimation using HRV, e-VO2max and power data and harnassing the power of machine learning on my bike computers
2019 - I posted on this forum about the 6 different ways to do Magic FTP Estimation using the techniques in Training and Racing With A Power Meter
Somewhere along the way I used other methods and formulas, including intervals.icu. The only two that give good estimates without max efforts and without a lot of effort - WindWarrior’s Magic FTP Estimation and my Garmin 530’s Magic FTP Estimation.
Great news that TR users will get TR Magic FTP Estimation. Lots of fun forum threads to come!