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Old 12-20-10, 09:54 AM   #1
Flash
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What power data do you look at during time trials (and training for time trials)?

I race TTs only and will be racing and training with powertap for the first time this season (Powertap Pro+ and Garmin Edge 500).

I'm trying to figure out a mix of fields to view on the Garmin that will give me the best chance of building my effort properly during races (and training).

Curious what others are displaying on their head units during TT racing and training.

thanks.
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Old 12-20-10, 10:04 AM   #2
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I use a powertap and I show power, speed, and distance on the display. I don't look at time because its more or less irrelevant to how I pace the effort (aside from having a ballpark idea before the race) and showing it will only drive you insane. Distance is more important because I want to know exactly where I am on the course at any given point. I use speed for courses with variable terrain or variable wind to get a feel for pacing.
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Old 12-20-10, 10:11 AM   #3
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Distance
3 second Power
Heart Rate

Last edited by Spring Water; 12-20-10 at 10:18 AM.
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Old 12-20-10, 10:19 AM   #4
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I'm a data junkie.

the layout on my 705 is:

time
hr | power (3s average)
cadence | speed
distance | time of day (I really only use this for making sure I get to the start in time during warmups)

However, you can get by with SW's minimalist display nicely enough.
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Old 12-20-10, 10:20 AM   #5
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I look at power, cadence, distance and time. I break down the TT into manageable segments and focus on completing each one. I focus on how I feel and can I maintain the effort or increase it. I do not want my past knowledge of my FTP, other results or current measured power to be a limiter. My goal in a race is to set new highs with better energy management.
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Old 12-20-10, 10:21 AM   #6
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Quote:
Originally Posted by esammuli View Post
I use a powertap and I show power, speed, and distance on the display. I don't look at time because its more or less irrelevant to how I pace the effort (aside from having a ballpark idea before the race) and showing it will only drive you insane. Distance is more important because I want to know exactly where I am on the course at any given point. I use speed for courses with variable terrain or variable wind to get a feel for pacing.
Thanks. Which power data points do you show? Garmin Edge 500 offers a bunch. Do you display avg power and lap power?
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Old 12-20-10, 10:24 AM   #7
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Originally Posted by Spring Water View Post
Distance
3 second PowerHeart Rate
I'm guessing the Edge 500 will show 3s avg power in watts, eg there isn't an option for 3s power avg as % FTP? I only see %FTP available for current power output.
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Old 12-20-10, 10:28 AM   #8
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Quote:
Originally Posted by Hermes View Post
I look at power, cadence, distance and time. I break down the TT into manageable segments and focus on completing each one. I focus on how I feel and can I maintain the effort or increase it. I do not want my past knowledge of my FTP, other results or current measured power to be a limiter. My goal in a race is to set new highs with better energy management.
Good points, interesting. I agree that how one feels during a specific TT can lead to an adjustment in planned approach during the race. I would go into the race with the intention of building the effort according to plan, but if I feel like Hercules and I am familiar with the distance and terrain, I would overshoot the planned targets based on what I think I can handle (from training).
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Old 12-20-10, 10:52 AM   #9
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I have a Garmin 705. My display fields are...

Power
Cadence | Power (Lap)
Time (Lap) | Distance (Lap)

I race based on RPE but use the data as a sanity check, which proves especially useful during the first 5-10 minutes of a race. As for the data fields, power gives me how hard I'm pushing at the moment and the lap power gives me an avg power which shows how well I'm pacing (or not pacing) myself. As long as the average is steady (or rising) I know I'm doing ok but if it starts to drop (especially in the later portions of the race) it just motivates me to dig a little deeper. Time and distance are just there for reference.
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Old 12-20-10, 10:56 AM   #10
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i usually look at the guy who started behind me as he passes me and hope the guy who started behind him wont be doing same
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Old 12-20-10, 11:08 AM   #11
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I have a really really bad habit of going out too hard. I typically only look at power numbers during the first few minutes, then it's all about maintaining the perfect amount of pain. But I do watch the distance. The vast majority of my TTs are roughly 20 minutes, an interval length I practice pretty frequently, and I will have driven or ridden the TT course a couple times prior so I know roughly what to expect.
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Old 12-20-10, 11:18 AM   #12
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Quote:
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Thanks. Which power data points do you show? Garmin Edge 500 offers a bunch. Do you display avg power and lap power?
I just show 1 second instantaneous power. I've been using power for about 4 years and I have a good sense for it. If you're less sure I'd use 3 or 5 second averaging. I've never used a Garmin so I can't really comment on the other features.
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Old 12-20-10, 11:33 AM   #13
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3s avg power and cadence are a given. I'll also look at total ascent if I know the total already, segment time left if I preloaded a course. Basically everything I'd need to go to the edge and not blow up. GL
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Old 12-20-10, 08:24 PM   #14
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What works for me:
I reset my computer at the start line so everything is zero. I go pretty hard to get up to speed and settle in, and I try to hit the interval timer at exactly 1min. From then on I look only at avg power. In the absence of hills I try to keep that avg number at my target power for the rest of the TT.
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Old 12-20-10, 08:37 PM   #15
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I think numbers are an unnecessary distraction except for maybe the first 5 minutes... when it is sometimes good to have numbers to hold me back a little. After that pace by feel. If you screw up then adjust your perceptions the next time.
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Old 12-21-10, 07:36 AM   #16
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power
cadence
time
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Old 12-21-10, 08:24 AM   #17
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Power. Time. Distance.

Cadence is in the display but I don't look at it.
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Old 12-21-10, 08:36 AM   #18
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There's this guy I hate. I tape his picture over my power meter.
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Old 12-21-10, 08:55 AM   #19
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Power and time. Distance and speed falls into place with those 2. Almost all of my TT's have turn-arounds, which I use for negative split marking.
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Old 12-21-10, 09:06 AM   #20
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on my 705 -
3sec Power; Lap (ave) Power
Cadence; HR
Dist; Time
Speed; Lap Speed (ave)

mostly look at the first 2; HR is useful to see how close I am to cooking it at after the first 5 minutes when I still feel great
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