Posts tagged ‘ibike’
Baseball skills assessment collage … Josiah was scheduled for his tryouts at 2:45 … I rode 102 miles and arrived at exactly 2:42, but he had gone early because it was starting to rain. Fortunately I was able to catch them in the parking lot before they left.
Yesterday my new iBike Newton+ arrived, and so I ran through the basic setup to get up and running for today’s BBL ride. I still need to do my on-the-bike calibration ride, but looking at the numbers both during the ride and afterwards – the iBike Newton+ seems to be delivering pretty reliable power numbers even without that extra calibration step. We had a small turnout for BBL with a number of riders out for a variety of reasons — including the cylocross world championships up in Louisville, Kentucky. Still, we had a great time on the Kelly Creek – Tunnel – Wall – Mountain Top loop.
Once I get my Quarq fixed by SRAM I’ll be able to explore some of the more “wind tunnel” advanced features of the Newton. In the meantime, I’ve made a video and highlighted the data for each of today’s attack zones organized as follows – video first, attack zone data next, and attack zone graph last. I did this for all three attack zones / KOMs which I happened to take a clean sweep of today!
STERRETT ATTACK ZONE (1st place) Dist: 2.77 mi (0:06:57) Energy: 138.1 kJ Cals Burn: 132.1 kcal Climbing: 186 ft Braking: 0.0 kJ (0.0%) Min Avg Max Power 0 331.3 1049 W Aero 0 264.9 774 W Rolling 27 45.7 66 W Gravity -657 1.3 482 W Speed 14.2 24.0 34.5 mi/h Wind 13.5 23.2 37.1 mi/h Elev 448 499 571 ft Slope -6.4 0.02 9.1 % Caden 33 85.7 111 rpm HR 139 162.4 184 bpm NP:379W IF:1.28 TSS:19 VI:1.15 CdA: 0.328 m^2; Crr: 0.0057 168 lbs; 2/2/2013 11:20 AM 43 degF; 1061 mbar
VANDIVER KOM (1st place) Dist: 1.79 mi (0:07:21) Energy: 152.3 kJ Cals Burn: 145.6 kcal Climbing: 498 ft Braking: 0.0 kJ (0.0%) Min Avg Max Power 180 345.4 642 W Aero 0 58.2 211 W Rolling 18 27.9 43 W Gravity 25 253.2 387 W Speed 9.5 14.7 22.4 mi/h Wind 4.4 14.1 23.2 mi/h Elev 565 822 1064 ft Slope 0.4 5.18 11.8 % Caden 60 76.9 100 rpm HR 141 170.8 180 bpm NP:352W IF:1.19 TSS:17 VI:1.02 CdA: 0.328 m^2; Crr: 0.0057 168 lbs; 2/2/2013 11:45 AM 45 degF; 1060 mbar
MIMOSA ATTACK ZONE (1st place) Dist: 2.32 mi (0:06:07) Energy: 135.6 kJ Cals Burn: 129.7 kcal Climbing: 241 ft Braking: 0.0 kJ (0.0%) Min Avg Max Power 0 369.5 957 W Aero 0 236.7 851 W Rolling 20 43.5 75 W Gravity -1043 60.9 768 W Speed 10.8 22.8 39.4 mi/h Wind 0.0 21.2 37.9 mi/h Elev 607 669 748 ft Slope -9.5 0.80 14.6 % Caden 57 82.0 104 rpm HR 122 165.6 181 bpm NP:406W IF:1.37 TSS:19 VI:1.10 CdA: 0.328 m^2; Crr: 0.0057 168 lbs; 2/2/2013 12:08 PM 48 degF; 1059 mbar
COMPLETE RIDE Dist: 104.76 mi (5:51:38) Energy: 4063.1 kJ Cals Burn: 3884.5 kcal Climbing: 8491 ft Braking: -226.0 kJ (-5.6%) Min Avg Max Power 0 192.6 1049 W Aero 0 130.8 2294 W Rolling 0 34.1 93 W Gravity -2481 1.5 778 W Speed 0.0 17.9 48.8 mi/h Wind 0.0 16.1 52.5 mi/h Elev 408 706 1107 ft Slope -19.9 0.02 18.9 % Caden 0 81.8 130 rpm HR 68 133.6 185 bpm NP:247W IF:0.84 TSS:409 VI:1.28 CdA: 0.328 m^2; Crr: 0.0057 168 lbs; 2/2/2013 8:28 AM 44 degF; 1063 mbar
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) – 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 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 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
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.
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 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…
17th place after missing the winning break of 8. Kenda, Mountain Khakis, UHC-Georgia, Team Coco’s, and Rosetti brought their top crit riders. Frank Travieso (Team Coco’s) won the race from the breakaway by attacking on the last lap and holding on until the end. Emile Abraham (Rosetti) took the sprint from the rest of the break for 2nd with Brendan Cornett (Locos) taking an impressive 3rd to round out the podium after bridging up to the break by himself. Kenda and Mountain Khakis also had riders in the break so they were not chasing. Andy Crater (Cleveland Clinic) tried to bridge across twice late in the race and could not quite close the gap. I tried to go with several early moves thinking that an early break would stick. It seemed that the race was too fast for any breaks to stick. I started sliding backwards after a 20 minute section with a heartrate average of 182 bpm (several beats above threshold) that started 10 minutes into the race. I recovered after a few laps, but unfortunately the winning break went at this point. I tried three different times to bridge across and/or get a chase group started, but the field brought the move back fairly quick each time. Then as the laps ticked down I switched tactics to try and position well for the field sprint and I was happy with how the field sprint played out as it felt a lot like the last couple laps of the Sunny King criterium which is coming up in a couple weeks. I ended up 9th in the field sprint for 17th in the race.
No powertap data for the race, as I had a loose spoke on my rear powertap wheel and switched to my light climbing wheels (2006 Bontrager 3X Lite) which are still pretty good for crits b/c they accelerate so easily. Still, I raced with my iBike and merged the iBike data with my Garmin heartrate data to obtain the annotated polar graph shown below. The iBike graph shows where I was drafting pretty clearly.
Annotated heartrate summary (two new yearly heartrate records so far this year – most time in Zone 5 for a race and highest max heartrate of 195bpm)
Finally, here are some pics and videos that Kristine got. The picture after the videos is my favorite … looking for the magic entrance into the side of the building
After yesterday’s long climbs in Huntsville, today was a different style of climbing – numerous short, steep climbs. Check out the iBike gradient graph:
Numerous climbs – click to enlarge and count the changes in gradient from up to down and then post in the comments how many “hills” there are. I don’t have time to count but I would guess 100-200 hills instead of maybe 20-30 hills yesterday?
Also, I was inspired while riding through Mountain Brook to post some pictures of the beautiful spring flowers. I didn’t have my camera with me – so I’ll have to post a few of the pics from my parent’s house this past Sunday. Imagine riding past house after house with all different kinds of blooming flowers – particularly azaleas, dogwoods, and bradford pears. It was an interesting contrast to yesterday’s ride in Huntsville, which went through some really rural countryside where instead of the tended flowers, you get wildflowers in the fields and beautiful dogwood trees blooming underneath all the really tall pine and hardwood trees in the woods. Two contrasting climbing rides, two contrasting spring flower explosions, two fun adventures.