I want to match my whatever dumb trainer VirtualWatts with my actual powermeter Watts,
A PowerMatch for dumb trainers!
So I have a dumb tacx Blue Twist trainer and a 4iiii left crank only power meter.
If you select it all perfectly in TR the VirtualPower is just wrong(aka different) compared with the PM.
The Blue Twist has 7 different resistances that TR supposedly know about. It just does not match against the 4iii readings and not just by small offsets. It differs at different rates at different speeds/powers. This is from just looking at both numbers at the same time. I’ll do a more thorough study if someone is interested. So yeah numbers can not be compared.
Though I found that it works best for me (My gatorskins, my unknown tyre preasure, my rotten chain) If I lie to TR about the resistance level I set in the dumb trainer. So I did a little search lying differently about the trainer and the result varies until it is almost satisfactory.
I wonder if the software could learn my dumb trainer power curve when using it at the same time with my crank PM. - Learn this dumb trainer at this settings. And save it.
I kind of want that TR was able to learn which trainer/trainer settings I’m using by itself (or the actual curve). And a way to save it a let me reuse it without the PM if I want.
Why this could be useful?
You have different bikes and only one PM and I want to be “close” if using VirtualPower-ML on the bike without the PM.
You want to be able to do the one leg thing when using a left only PM and a dumb trainer.
You want to “calibrate” friends dumb trainers so numbers look less uninviting when put together, re. group workouts.
We are not supposed to compare VirtualPower but you name whatever the VirtualPower calculates Watts too. So… Does anyone else think about this stuff?