Tacx Sirius and power

danseur

I know that such things are prone to all manner of error, but does anyone have any information regarding approximate power output at different speeds and resistance for the Tacx Sirius?

I'm perfectly happy monitoring my own training by HR zones and perceived effort, but it would be interesting to know a ballpark figure of how much (little) power I'm actually generating.

Ta muchly.

nmcgann

I think this is going to be a pretty pointless comparison as turbos vary so much between units (and you can fine-adjust the resistance on the Sirius with the cable adjuster on the head unit anyway giving even more variation) and tyre type/pressure and roller pressure makes a difference too, but FWIW:

I did a 2h session today on my Sirius with resistance at the click between 2&3, a constant 33.2kph corresponded to 219W average measured on my powertap. This is at the bottom of my own tempo power range.

I use that same resistance for most training and just change gear/cadence to vary power.

danseur

That's a useful benchmark.

Thanks.