AeroPod, PowerPod and Newton

I was just thinking about doing 4-mile rides on rollers to get the riding tilt for a variety of positions. For riding tilt, it seems like rollers would provide the ultimate, ideal-road conditions: perfectly straight and smooth, no traffic lights or stop signs, no pesky cars pulling out and forcing you to brake, etc.

This would be useless for calculating wind speed correction (how does Travis do that?), but I'm thinking it would be valuable for providing sanity checks on riding tilt when building profiles. (Yeah, I had some problems with riding tilt with Gen II; haven't yet tried with Gen III -- still waiting for a good day.)

BTW, is the wind speed correction dependent on anything other than the mount angle? Once found does it ever change?

Norm wrote:I was just thinking about doing 4-mile rides on rollers to get the riding tilt for a variety of positions. For riding tilt, it seems like rollers would provide the ultimate, ideal-road conditions: perfectly straight and smooth, no traffic lights or stop signs, no pesky cars pulling out and forcing you to brake, etc.

Yep. When people send me trainer ride files it is easy to see when they change position during the ride.

Norm wrote:This would be useless for calculating wind speed correction (how does Travis do that?), but I'm thinking it would be valuable for providing sanity checks on riding tilt when building profiles. (Yeah, I had some problems with riding tilt with Gen II; haven't yet tried with Gen III -- still waiting for a good day.)

BTW, is the wind speed correction dependent on anything other than the mount angle? Once found does it ever change?

Mount location relative to the bars is a big factor for wind scaling. The very same unit mounted at the exact same angle will typically have a much larger wind scaling factor on a bar mount compared to a stem mount. For a stem mount, it will also depend on how much of the nose sticks out beyond the bars. Mount angle is also important. Rider position can factor into it to a lessor degree. Finally, there are some unit-to-unit variations. Just be sure to do a cal ride if you ever move the mount and everything will be ok.

Travis

Drat! So riding tilt does effect wind scaling; I was hoping didn't. That way you could do one 4 mile ride to capture wind scaling for your iBike & mount setup, jump on the rollers to find your riding tilt for 3 or 4 positions, then pair them up to build the profile. It seems like this time of year it's just plain hard to find the daylight and weather conditions to build up a profile set and having an indoor option for at least some of it would be nice.

BTW, kudos on the riding tilt auto-correction in the Gen III units. I'm really anxious to try it out on my new iAero, but I need to change out my mount and that means building new profiles. Argh! Maybe next weekend will cooperate.

BTW2, does a DFPM make it any easier to pull apart fric and aero components for profile building?