DragFactor is 100 by default regardless of rider weight. Rider weight is accounted for in other parts of the physics model (acceleration and rider inertia), but the frontal area was previously fixed. The method suggested to aid in its adjustment was to use heart rate as recorded on the road (ride a very flat 1-mile, same speed, do an out/back, average your HR out/back to negate head/tail wind) and then setup a 2-mile flat course on the trainer and adjust DF until your HR stabilized the same indoors and out. Though we were adjusting wind-load, heart rate is a very good determining factor of work.
I've had no one report it is not adjusting correctly, so let us know. On the old software you adjusted it prior to starting a ride timer. You could also pre-set a value and try it.
The original load curve was pretty stiff (male rider in the drops, but not aero at all) and so we didn't allow the setting much upper range, but assumed it would need more lower range.
Roger Moore
Software Development Mgr.
RacerMate Inc.
http://www.racermateinc.com