Which Kinetic by Kurt Road Machine

[thooey]

I have a pretty new ( within last year) Kinetic by Kurt Road Machine. In Isaac I see two listings for Kinetic Road Machine, the power curve differs by about 20w at 20 mph.

How do I know which one to choose?

Thank you.

[Velocomp]

If you've been riding your bike all summer, then I'd try each setting on the trainer, and pick the one that feels closest to your outdoor experience.

Remember that what is critical is consistency, rather than absolute accuracy.

[thooey]

Thank you.