Originally Posted by
GhostRider62
What is estimated power?
Outfits like Zwift and Trainer Road have mapped out the resistance curves of most of the dumb trainers out there. If a user doesn't have a power meter or smart trainer, they can use a rear wheel speed sensor and Zwift/TR will reference the resistance curves to infer the user's power output. The problem, of course, is that there's unit-to-unit variation and that some designs are much more predictable than others.