I forgot to zero my DFPM before my last ride. I was using Profile 4 with the beta 18 firmware. The calibration portion of the ride went smoothly but I don't know how far off my DFPM's zero setting was.
When I get on the bike next time do I need to re-calibrate from scratch or just do the 5 minute no-brake-no-turn ride? After zeroing the DFPM or course.
If I understand correctly what I've read the first part of the calibration ride is mostly about zeroing the wind sensor and the last part is used to finalize the settings for tilt and so on ... but it is not clear how much impact the DFPM values have during the initial calibration. With which process should I start the next ride?
Thanks
What happens if the DFPM is wrong during the calibration ride?
Re: What happens if the DFPM is wrong during the calibration ride?
If DFPM is wrong, the consequence is that the baseline CdA measured during the last part of the cal ride will be wrong. This will affect Time Advantage measurements.
You can override the baseline CdA in your profile, or you can do a new cal ride.
You can override the baseline CdA in your profile, or you can do a new cal ride.
John Hamann
Re: What happens if the DFPM is wrong during the calibration ride?
Thanks. I'm actually not terribly worried about real time CdA right now. I'm just trying to compare CdA for multiple different setups using after-the-fact analysis in Isaac. Now that I think about it that raises two separate questions:
if I'm not actually using real time CdA, just the analysis in Isaac, does my baseline CdA from my profile even matter assuming that I did the calibration part correctly so the wind scaling and tilt are correct?
For what I've described do I need to restrict myself to Profile 4 or would I get equivalent results from Isaac if I set the bike up in a different profile.
Once I'm convinced that I've get everything right with my setup I may worry about real time CdA but right now I'm just trying to figure out how sensitive the Aeropod is to changes in setup and how stable the measurements are.
"if I'm not actually using real time CdA, just the analysis in Isaac, does my baseline CdA from my profile even matter assuming that I did the calibration part correctly so the wind scaling and tilt are correct?"
A:No, it does not matter.
"For what I've described do I need to restrict myself to Profile 4 or would I get equivalent results from Isaac if I set the bike up in a different profile."
A: You should use profile 4 for CdA measurement, even if you're doing the analysis in Isaac.
if I'm not actually using real time CdA, just the analysis in Isaac, does my baseline CdA from my profile even matter assuming that I did the calibration part correctly so the wind scaling and tilt are correct?
For what I've described do I need to restrict myself to Profile 4 or would I get equivalent results from Isaac if I set the bike up in a different profile.
Once I'm convinced that I've get everything right with my setup I may worry about real time CdA but right now I'm just trying to figure out how sensitive the Aeropod is to changes in setup and how stable the measurements are.
"if I'm not actually using real time CdA, just the analysis in Isaac, does my baseline CdA from my profile even matter assuming that I did the calibration part correctly so the wind scaling and tilt are correct?"
A:No, it does not matter.
"For what I've described do I need to restrict myself to Profile 4 or would I get equivalent results from Isaac if I set the bike up in a different profile."
A: You should use profile 4 for CdA measurement, even if you're doing the analysis in Isaac.