Holy crap! I just gained 40 watts on my ftp with a 6 mo layoff?
Hoping some of you power geeks might be able to figure this one out for me?
So my last ftp before IMFL last year netted me a result of 235. I have literally done NOTHING in the way of training since then, and did a sprint tri at white lake yesterday. Both my Garmin 910 xt, and my joule is showing that I road 14 miles at 19 mph for 46 mins with watts averaging 278 . I'm smart enough to know, or at least I think I am, that is not correct? So what is going on? How could both devices be that far off? What should I be checking to make sure they are calibrated properly?
Thanks in advance from one confused triguy.
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Comments
I would also check the manual for your specific meter type. Some drift is normal but not that much.
Factors to consider: power source needs calibration; road bike vs tri bike; indoors vs outdoors; NP vs AP with lots of surges?
45:09
Work: 755 kJ
TSS: 112.7 (intensity factor 1.23)
Norm Power: 283
VI: 1.01
Pw:HR: -3.49%
Pa:HR: -1.49%
Distance: 14.307 mi
Elevation Gain: 51 ft
Elevation Loss: 70 ft
Grade: -0.0 % (-16 ft)
Min Max Avg
Power: 33 610 279 watts
Heart Rate: 148 167 160 bpm
Cadence: 47 246 89 rpm
Speed: 4.5 22.9 19.0 mph
Pace 2:37 13:25 3:10 min/mi
Hub Torque: 4 36 10 lb-in
Altitude: 67 95 79 ft
Crank Torque: 0 558 274 lb-in
Temperature: 73.4 75.2 75.2 Fahrenheit
Weird thing is that I have NEVER had to calibrate my power tap sl+, and its been dead on. Could the fact that it has been sitting for 6 mo's with little to no use be causing this? I'll check the links above. Thanks!
Looking at the data I find it hard to believe you had a NP of 283 and an average speed of 19mph on what appears to be a dead flat course. Doesn't appear to be windy with a VI of 1.01. Not sure how big you are but I'm 6'2" 195 and when I am at 280w I'm averaging 23-25 mph on flat roads.
I'll do a zero offset and figure out how to check the calibration on it
Thanks all!