Please Help: Calibration 'off'!
Posted: Tue Sep 14, 2010 10:42 pm
Updates on the 3 post down: I can't seem to get believable numbers. Too much effort with too little Wattage reported (under reporting) with the current profile (attached to 3 post).
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I took my first shot a doing a full calibration ride, followed by 15 coast downs (two I deleted as the Fric values were too low at 1.09 and 0.35-probably from getting passed by cars?). I just recently upgraded from an iSport to an iPro + Trainer and need to get my calibration set correctly so I can believe my data. Here's the details on my setup, build, etc.:
Male, 5' 4" (64"), 130 lbs alone, 154 rider+gear+bike; Tires: Continental GP4000s, 92 psi (front)/95 psi (rear), Rollout (with rider and all equipment) measured out to exactly 2096mm (700x23)-what a coincidence!; iPro mounted on bars (horizontally leveled), just to the right of my stem clamp (nothing in front of wind port). Handlebars are 40 cm c-t-c. Position = hoods (to slightly behind actually, near the bends). Road surface for cal ride was older chip-seal; surface for 7 mile ride afterwards was varied (the 4 minute interval and 1000+W sprint were on asphalt).
I originally had a lot of problems with my power dropping significantly on my iSport whenever I'd hit a bump in the road. Since upgrading, this thing seems to completely ignore bumps now-it's great! Read more detail (if you want) here: http://www.ibikeforum.com/viewtopic.php?f=26&t=1584 .
I don't know what files to send, so I've included a couple different files below. One is the profile saved, that is from the iBike software's 'Download coast down's and calibration ride' feature. I found some old coast downs that were still in memory, where the values were WAY off that were being averaged in, so I deleted all those (after I got home from my 7 mile ride, post-calibration, tonight-that file is attached also), along with two coast downs that had a very low (suspect they were when I got passed by a couple trucks) Fric value (0.35 & 1.09). (couldn't add the following: 'The next file is a pdf file with the coast down information, and which coast downs I deleted from the averaging.') Next, there is the ride file from tonight, post cal-ride and coast downs where I did a sprint and a 4 minute interval (Please note: the profile embedded in this ride seems to have the old/bad coast downs included in it). Finally, I've included a copy of my actual calibration ride. Like I said, I don't know what file(s) are needed to assess what my 'correct' profile should be (I think its close to correct now in the 'Master_100914_cal_data.ibcd4m' file attached below, but need someone to confirm).
Also, on the 'Download coast down's and calibration ride' feature, I didn't know which option to select, so I selected 'Crr adjusted' for creating my profile-I hope that was correct.
Please help.
Sean
~~~~~~~~
I took my first shot a doing a full calibration ride, followed by 15 coast downs (two I deleted as the Fric values were too low at 1.09 and 0.35-probably from getting passed by cars?). I just recently upgraded from an iSport to an iPro + Trainer and need to get my calibration set correctly so I can believe my data. Here's the details on my setup, build, etc.:
Male, 5' 4" (64"), 130 lbs alone, 154 rider+gear+bike; Tires: Continental GP4000s, 92 psi (front)/95 psi (rear), Rollout (with rider and all equipment) measured out to exactly 2096mm (700x23)-what a coincidence!; iPro mounted on bars (horizontally leveled), just to the right of my stem clamp (nothing in front of wind port). Handlebars are 40 cm c-t-c. Position = hoods (to slightly behind actually, near the bends). Road surface for cal ride was older chip-seal; surface for 7 mile ride afterwards was varied (the 4 minute interval and 1000+W sprint were on asphalt).
I originally had a lot of problems with my power dropping significantly on my iSport whenever I'd hit a bump in the road. Since upgrading, this thing seems to completely ignore bumps now-it's great! Read more detail (if you want) here: http://www.ibikeforum.com/viewtopic.php?f=26&t=1584 .
I don't know what files to send, so I've included a couple different files below. One is the profile saved, that is from the iBike software's 'Download coast down's and calibration ride' feature. I found some old coast downs that were still in memory, where the values were WAY off that were being averaged in, so I deleted all those (after I got home from my 7 mile ride, post-calibration, tonight-that file is attached also), along with two coast downs that had a very low (suspect they were when I got passed by a couple trucks) Fric value (0.35 & 1.09). (couldn't add the following: 'The next file is a pdf file with the coast down information, and which coast downs I deleted from the averaging.') Next, there is the ride file from tonight, post cal-ride and coast downs where I did a sprint and a 4 minute interval (Please note: the profile embedded in this ride seems to have the old/bad coast downs included in it). Finally, I've included a copy of my actual calibration ride. Like I said, I don't know what file(s) are needed to assess what my 'correct' profile should be (I think its close to correct now in the 'Master_100914_cal_data.ibcd4m' file attached below, but need someone to confirm).
Also, on the 'Download coast down's and calibration ride' feature, I didn't know which option to select, so I selected 'Crr adjusted' for creating my profile-I hope that was correct.
Please help.
Sean