Tag Archives: ibike

BBL iBike data and videos

Fun day today at the BBL. I mainly wanted to put a post up with my iBike data for those of you curious about the iBike. I’ve highlighted the attack zone data below first – along with a video for the Sterrett attack zone and the Vandiver KOM. I forgot to turn the video back on for the Mimosa attack zone. The format for the post below goes like this: 1) data 2) graph 3) video. Then I’ve got the data and graph for the entire ride at the end.

Sterrett Attack Zone (1st place)
Dist:        2.64 mi (0:05:53)
Energy:     119.1 kJ
Cals Burn:  113.8 kcal
Climbing:     121 ft
Braking:      0.0 kJ (0.0%)
          Min   Avg    Max
Power       0  337.3   767  W
Aero        0  264.7   830  W
Rolling    33   51.5    70  W
Gravity  -632    9.7   481  W
Speed    17.2   27.0  36.5  mi/h
Wind      8.2   20.5  36.0  mi/h
Elev       77    126   182  ft
Slope    -6.0   0.11   7.9  %
Caden      47   86.8   107  rpm
HR        123  158.7   182  bpm
NP:366W IF:1.32 TSS:17 VI:1.08
CdA: 0.342 m^2; Crr: 0.0057
168 lbs; 5/3/2011 2:52 AM
48 degF; 1013 mbar

iBike graph for the Sterrett attack zone - I ended up winning this one after covering Mark's attack on the final hill and then taking off before the swarm led by Jeff Fuller, Jim Brock, and Darrell O'Quinn could catch back up to us. This one shows clearly when I was drafting and when I had my nose in the wind (not often)iBike graph for the Sterrett attack zone – I ended up winning this one after covering Mark’s attack on the final hill and then taking off before the swarm led by Jeff Fuller, Jim Brock, and Darrell O’Quinn could catch back up to us. This one shows clearly when I was drafting and when I had my nose in the wind (not often) – CLICK TO ENLARGE

Vandiver KOM (2nd place)
Dist:        1.72 mi (0:06:31)
Energy:     134.6 kJ
Cals Burn:  128.7 kcal
Climbing:     458 ft
Braking:      0.0 kJ (0.0%)
          Min   Avg    Max
Power     175  344.2   642  W
Aero        0   51.1   300  W
Rolling    23   30.2    39  W
Gravity    49  260.0   482  W
Speed    11.9   15.9  20.5  mi/h
Wind      3.0   12.2  27.6  mi/h
Elev      199    451   660  ft
Slope     0.8   4.92  10.9  %
Caden      54   83.5   113  rpm
HR        151  180.3   185  bpm
NP:358W IF:1.29 TSS:18 VI:1.04
CdA: 0.342 m^2; Crr: 0.0057
168 lbs; 5/3/2011 3:16 AM
50 degF; 1013 mbar

iBike graph for the Vandiver KOM - you can see where the climb flattened out and I had trouble finding a gear that would hold that I could still keep up with Mark - couldn't do it and he rode away from me to take the KOMiBike graph for the Vandiver KOM – you can see where the climb flattened out and I had trouble finding a gear that would hold that I could still keep up with Mark – couldn't do it and he rode away from me to take the KOM – CLICK TO ENLARGE

Mimosa Attack Zone (3rd place)
Dist:        2.56 mi (0:07:08)
Energy:     126.5 kJ
Cals Burn:  120.9 kcal
Climbing:     236 ft
Braking:     -0.0 kJ (-0.0%)
          Min   Avg    Max
Power       0  295.5   793  W
Aero        0  189.1  1560  W
Rolling    16   41.2    79  W
Gravity -1889   27.9   571  W
Speed     8.5   21.6  41.6  mi/h
Wind      0.0   17.7  44.6  mi/h
Elev      221    302   375  ft
Slope   -14.2   0.39  12.0  %
Caden       8   84.4   123  rpm
HR        105  151.1   177  bpm
NP:338W IF:1.22 TSS:18 VI:1.15
CdA: 0.342 m^2; Crr: 0.0057
168 lbs; 5/3/2011 3:37 AM
50 degF; 1013 mbar

iBike graph for the Mimosa Attack Zone - I was having problems with a stiff link on my chain so I ended up setting a max cadence of 124 RPM when I finally found a gear that would stick ... still held on for 3rd in the sprintiBike graph for the Mimosa Attack Zone – I was having problems with a stiff link on my chain so I ended up setting a max cadence of 124 RPM when I finally found a gear that would stick … still held on for 3rd in the sprint – CLICK TO ENLARGE

iBike data for the ENTIRE RIDE
Dist:      103.94 mi (5:58:22)
Energy:    3781.5 kJ
Cals Burn: 3615.2 kcal
Braking:   -174.7 kJ (-4.6%)
          Min   Avg    Max
Power       0  175.9   793  W
Aero        0  117.9  2724  W
Rolling     0   33.2    95  W
Gravity -2123    1.6   603  W
Speed     0.0   17.4  50.1  mi/h
Wind      0.0   14.6  54.3  mi/h
Elev       77    347   823  ft
Slope   -16.5   0.03  19.1  %
Caden       0   81.3   134  rpm
HR         71  132.0   185  bpm
NP:231W IF:0.83 TSS:415 VI:1.32
CdA: 0.342 m^2; Crr: 0.0057
168 lbs; 1/26/2013 8:35 AM
50 degF; 1013 mbar

BBL 2013-01-26 iBike graph for the entire ride - note the addition of the gear ratio graph -- pretty cool to show you when you switched gears.BBL 2013-01-26 iBike graph for the entire ride – note the addition of the gear ratio graph — pretty cool to show you when you switched gears. – CLICK TO ENLARGE

Tornado anniversary and return of the iBike

A lot going on in the cockpit ... video camera, iBike, and Garmin.A lot going on in the cockpit … camera, iBike, and Garmin.

This is my last week off before the start of the spring semester at Samford, so I wanted to get in at least one more long ride. I’m riding my Scott Addict right now because the Trek is down for the count with a crack in the frame. Because I switched bikes to my Scott, I could re-mount the iBike again (the Bontrager stem on my Trek is far too thick for the iBike mount to fit). The only problem is that when I went to mount the iBike, I discovered I was missing a screw for the mounting bracket … a quick trip to the local hardware store with the iBike and a screwdriver in my back pocket and I was able to find the right screw.

In my opinion, the absolute best thing about the iBike is its ability to measure gradients quite accurately — much more so than the barometric pressure calculated gradient from the Garmin. The iBike has an internal gyrometer/accelerometer which can calculate gradient based on immediate changes in pitch, unlike the Garmin which requires motion and change in air pressure to calculate gradient based on the change of elevation over time. The ability of the iBike to measure power is a secondary benefit … and not too bad either compared to all the other power meters I’ve owned. You do have to get it calibrated correctly, but that is a one-time setup step which is supposedly eliminated on the new iBike Newton.

Excited about the iBike, I wanted to measure the gradients on the Emerald Lakes climbs which I discovered over Christmas and rode again a couple weeks ago on the way out to Skyball. I’ve posted videos below where I am calling out a small selection of the iBike gradient readings (it updates itself about every second, but I’m only calling out readings every few seconds). The front side climb Cat 4 climb (from the Lake) has the steepest pitch topping out at 30.4%, but the 20+% section is much shorter than the 20+% section on the backside Cat 3 climb. The descent back down the 30% section is dangerous. I was trying to be conservative and still hit 53mph (last video). I’m glad I was trying to be conservative because any faster, and I might very well have ended up IN Emerald Lake.

Red tailed hawk flying above its nest in tornado damaged neighborhood.Red tailed hawk flying above its nest in tornado damaged neighborhood.

When I was planning out the return route, I noticed that the climb up to the top of the Summit Pointe neighborhood off of Tyler Loop road would probably be an auto-detected Strava cat 4 climb. The picture of the hawk above is just below the summit of the climb. I was trying to maximize climbing on the ride so I created a route through that neighborhood up the climb not realizing that I would be doing the ride on the 1 year anniversary of the Chalkville EF-3 tornado (just under EF-4) which went through a corner of the neighborhood. I came to the realization that it was the 1 year anniversary late in the video below as I was narrating the damage still visible a year later. Click the “youtube” button to watch this on youtube, and you can jump to specific parts of the video using the video bookmarks in the description area below the video.

Finally, here is a photoshop – annotated view of the iBike data from the ride. I was concerned with the cold weather that the iBike battery might not make it the entire ride so I cut it off after the Vesclub climb and didn’t turn it back on again until I got up to Trussville.

ibike graph annotated for the emerald lakes rideibike graph annotated for the emerald lakes ride (click to enlarge and read the annotations)

iBike statistics - Emerald lakes ride (partial)
Dist:       77.57 mi (5:12:38)
Energy:    3691.5 kJ
Cals Burn: 3529.1 kcal
Climbing:    8806 ft
Braking:   -609.4 kJ (-16.5%)
          Min   Avg    Max
Power       0  196.8   692  W
Aero        0  120.6  2982  W
Rolling     0   19.2    68  W
Gravity -4009    4.0   548  W
Speed     0.0   14.9  53.1  mi/h
Wind      0.0   15.3  55.9  mi/h
Elev      -14    454   865  ft
Slope   -24.0   0.08  30.4  %
Caden       0   72.8   126  rpm
HR         79  131.3   165  bpm
NP:226W IF:0.81 TSS:345 VI:1.15
CdA: 0.342 m^2; Crr: 0.0039
168 lbs; 8/14/2011 2:25 PM
52 degF; 1013 mbar

A few notes about the data … the climbing total is quite a bit lower because it’s missing 23 miles of the ride and the iBike is applying smoothing (either in the software or via how the barometric elevation sensor is recording) and doesn’t pick up all the rollers in its climbing total that the Garmin does. Also, the distance is short because I turned off the iBike to save battery after the Vesclub climb and didn’t turn it back on again until Trussville. Also, the “168 lbs” in the statistics at the bottom is my weight plus the weight of the bike plus weight of clothing, etc…