In April I raced the Tour of the Battenkill and didnt perform as well as I should have.
During the race I felt as though there was something off with my bicycle.
I found later when cleaning the bike that the 25s I has installed for the tough terrain were rubbing the brake bridge.
They did not rub before the gun went off however.
Is there a way I can figure out from my ibike data file if the tire was rubbing during the race and if so where it started to happen?
Can you use ibike file to figure out if a wheel was rubbing?
Re: Can you use ibike file to figure out if a wheel was rubbing?
Please post your ride file from the race and we'll give it a look.
John Hamann
Re: Can you use ibike file to figure out if a wheel was rubbing?
Thanks. You guys are the best...even if you cant figure it out for me!
- Attachments
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- iBike_04_14_2012_0139_62_Miles.ibr
- (1.06 MiB) Downloaded 300 times
Re: Can you use ibike file to figure out if a wheel was rubbing?
Brodirt,
The brains may come up with more than this but my only idea is to compare two similar sections of the ride, one early one late, assuming that the rub started in the middle:
At 1:09:36 (24.5 mi): Pow: 287 W; Speed 15.9 mi/h; Wind 18.1 mi/h; Elev 574 ft; Slope 4.1%; HR 170 bpm; Cadence 85 rpm; Gear Ratio 2.38; rec rate = 1 s
Dist: 1.78 mi (0:05:17)
Energy: 56.1 kJ
Cals Burn: 53.7 kcal
Climbing: 49 ft
Power 0 177.0 296 W
Speed 13.2 20.3 26.3 mi/h
Wind 14.0 23.2 36.1 mi/h
Elev 564 583 616 ft
Slope -6.7 -0.33 7.1 %
Caden 8 90.3 113 rpm
and
At 3:28:36 (61.4 mi): Pow: 181 W; Speed 20.4 mi/h; Wind 13.5 mi/h; Elev 618 ft; Slope 1.0%; HR 151 bpm; Cadence 83 rpm; Gear Ratio 3.13; rec rate = 1 s
Dist: 1.55 mi (0:05:05)
Energy: 45.3 kJ
Cals Burn: 43.4 kcal
Climbing: 53 ft
Power 37 148.7 222 W
Speed 14.8 18.4 20.7 mi/h
Wind 10.0 18.6 29.0 mi/h
Elev 610 625 635 ft
Slope -2.0 0.19 3.3 %
Caden 41 83.0 94 rpm
My thoughts about these two segments compaired:
1. 28 watts less output on a somewhat similar segment (tired or rub or both?)
2. Not exact match so comparison may not be valid, you have to judge from memory.
3. If you get the method, you may be able to find smaller segments, zoomed in to make more comparisons.
4. If the comparison is ballpark valid, it shows power loss do to rubbing, all other things being more or less equal and if the rubbing started in between.
Regards,
Russ
The brains may come up with more than this but my only idea is to compare two similar sections of the ride, one early one late, assuming that the rub started in the middle:
At 1:09:36 (24.5 mi): Pow: 287 W; Speed 15.9 mi/h; Wind 18.1 mi/h; Elev 574 ft; Slope 4.1%; HR 170 bpm; Cadence 85 rpm; Gear Ratio 2.38; rec rate = 1 s
Dist: 1.78 mi (0:05:17)
Energy: 56.1 kJ
Cals Burn: 53.7 kcal
Climbing: 49 ft
Power 0 177.0 296 W
Speed 13.2 20.3 26.3 mi/h
Wind 14.0 23.2 36.1 mi/h
Elev 564 583 616 ft
Slope -6.7 -0.33 7.1 %
Caden 8 90.3 113 rpm
and
At 3:28:36 (61.4 mi): Pow: 181 W; Speed 20.4 mi/h; Wind 13.5 mi/h; Elev 618 ft; Slope 1.0%; HR 151 bpm; Cadence 83 rpm; Gear Ratio 3.13; rec rate = 1 s
Dist: 1.55 mi (0:05:05)
Energy: 45.3 kJ
Cals Burn: 43.4 kcal
Climbing: 53 ft
Power 37 148.7 222 W
Speed 14.8 18.4 20.7 mi/h
Wind 10.0 18.6 29.0 mi/h
Elev 610 625 635 ft
Slope -2.0 0.19 3.3 %
Caden 41 83.0 94 rpm
My thoughts about these two segments compaired:
1. 28 watts less output on a somewhat similar segment (tired or rub or both?)
2. Not exact match so comparison may not be valid, you have to judge from memory.
3. If you get the method, you may be able to find smaller segments, zoomed in to make more comparisons.
4. If the comparison is ballpark valid, it shows power loss do to rubbing, all other things being more or less equal and if the rubbing started in between.
Regards,
Russ