Trainer Sprint Power Limit

Equipment
,
1

I’m using an older Tacx Vortex Smart for the past year or so and Favero Assiom with power match. I’ve been going through some of the 200% FTP sprint progression workouts in the half ironman base plans and seem to be RPM limited on the sprint power. I have pretty consistently handled ~520-540W (470 target) for the 20 seconds, but I always feel like I could handle more.

I am in the big ring (50t) and smallest gear on my cassette (11t). I am averaging ~130rpm for the sprints, and the resistance just kind of melts away. I turn off ERG mode ~10 seconds before the sprint interval.

Does anyone have any recommendations on how to go higher power indoors? Or is this just going to be a permanent limit of my setup?

2
  • OK, so that means you are in “Resistance” mode in the TrainerRoad app, which leads to a piece of info you did not include:

What is the Resistance setting you have set in the TR app? My guess is that you have it at a low value and you can increase it to get more resistance.

Here is what it looks like in the mobile app:

image
image711×622 123 KB

On Win/Mac:

image
image847×517 67.2 KB

1 Like
3

Here is the key! Thanks so much. I guess mine defaulted to 60% so that was why I couldn’t go any higher power. Hopefully now my sprints can sound a bit less like helicopter takeoffs.

2 Likes