could someone with a powermeter and a garmin

a_n_t
a_n_t Posts: 2,011
edited January 2010 in Training, fitness and health
upload a ride here http://ridewithgps.com/trips/11047 ?

just so I can see how accurate their power readings are? Its saying 326 watts average on a club 10.
Manchester wheelers

PB's
10m 20:21 2014
25m 53:18 20:13
50m 1:57:12 2013
100m Yeah right.

Comments

  • Pokerface
    Pokerface Posts: 7,960
    Do you think that's too high or too low?
  • chrisw12
    chrisw12 Posts: 1,246
    Sorry, I had a go as I had a great route saved which I'd been playing with but did not have heart rate data (I had power data.)

    For what it's worth, I can't see how it can predict your power from your heart rate with any level of accuracy. I was hoping that it would predict your power from the elevation and speed data but no.

    Also 326w for 22 mph is massive unless you are massive or are as aero as a brick. 300w would get you a minimum of 25mph from what I've seen on 'net.
  • Bhima
    Bhima Posts: 2,145
    At that average power, assuming you and your bike weigh 75kg and the wind is "normal", you'd be able to get up the cat & fiddle in 21:25. Does that sound about right?

    78kg and it goes up to 22 minutes.

    Taking into account that bit of sh1te road, it'll drop to 23:22 at 78kg.

    So, as you can see, all estimates are pointless.

    Don't know why you're interested in power without using a powermeter though! Been there, done that. It's only worth knowing if you can go out and train with one! By the first Wheelers 10, I should have one so i'll let you know my figures. When I borrowed a powermeter, 350 W was getting me to about 45kph on the flat, although I was sat up in the wind, hardly aero at all.
  • Anonymous
    Anonymous Posts: 79,666
    When the weather is fine I'll go out and do the route and give you my readings.

    The comparisons will be borderline meaningless but it'll give you some idea.
  • Slow1972
    Slow1972 Posts: 362
    Bhima wrote:
    When I borrowed a powermeter, 350 W was getting me to about 45kph on the flat, although I was sat up in the wind, hardly aero at all.

    That's impressive, those figures mean you should be able to do 53 minutes on a flat 25 riding "sat up in the wind", imagine what you'd do on a TT bike eh?
  • Bhima
    Bhima Posts: 2,145
    I said "about". Didn't look at speed at all when I borrowed it, it was merely an estimation. Besides, who said anything about me being able to hold 350W for 53 minutes? :shock:
  • a_n_t
    a_n_t Posts: 2,011
    edited January 2010
    I'm not that bothered really tbh, I was just wondering if the power figure was in the right ballpark or not.
    Manchester wheelers

    PB's
    10m 20:21 2014
    25m 53:18 20:13
    50m 1:57:12 2013
    100m Yeah right.
  • a_n_t
    a_n_t Posts: 2,011
    chrisw12 wrote:
    Also 326w for 22 mph is massive unless you are massive or are as aero as a brick. 300w would get you a minimum of 25mph from what I've seen on 'net.


    Averaged 24.1 mph for the TT so it looks to be a bit over. Wasn't that windy either from what I can remember!


    cheers all anyway.
    Manchester wheelers

    PB's
    10m 20:21 2014
    25m 53:18 20:13
    50m 1:57:12 2013
    100m Yeah right.
  • Anonymous
    Anonymous Posts: 79,666
    I reckon it'll be high 200s...
  • chrisw12
    chrisw12 Posts: 1,246
    Whatever it is it'll be 12w less than you, so why don't you go out and ride it. :)
  • GavH
    GavH Posts: 933
    a_n_t wrote:
    upload a ride here http://ridewithgps.com/trips/11047 ?

    just so I can see how accurate their power readings are? Its saying 326 watts average on a club 10.

    Ant, have you tried the GPS2 Power plugin for SportTracks? It estimates power based on all the variables gathered from devices such as a 705. I don't profess to know how accurate it is or fully understand how it works, but it would be interesting to see what it reckons the power for this ride is.
  • a_n_t
    a_n_t Posts: 2,011
    NapoleonD wrote:
    I reckon it'll be high 200s...


    not too shabby considering I didn't train for the TT's last season.


    now if I could just find 12 watts more :wink:
    Manchester wheelers

    PB's
    10m 20:21 2014
    25m 53:18 20:13
    50m 1:57:12 2013
    100m Yeah right.
  • a_n_t
    a_n_t Posts: 2,011
    GavH wrote:
    Ant, have you tried the GPS2 Power plugin for SportTracks?

    Never really got on with sporttracks tbh :?
    Manchester wheelers

    PB's
    10m 20:21 2014
    25m 53:18 20:13
    50m 1:57:12 2013
    100m Yeah right.
  • doyler78
    doyler78 Posts: 1,951
    GavH wrote:
    a_n_t wrote:
    upload a ride here http://ridewithgps.com/trips/11047 ?

    just so I can see how accurate their power readings are? Its saying 326 watts average on a club 10.

    Ant, have you tried the GPS2 Power plugin for SportTracks? It estimates power based on all the variables gathered from devices such as a 705. I don't profess to know how accurate it is or fully understand how it works, but it would be interesting to see what it reckons the power for this ride is.

    Interesting.

    Might be worth removing the power data from a known ride and uploading that into sporttracks with the plugin to see how actual versus estimated compares. Would do it myself only I don't have actual gps data (only estimates based on a google maps which would only be introducing yet another estimate so no point in that).

    Anybody using both who would like to put up a comparison?
  • chrisw12
    chrisw12 Posts: 1,246
    doyler78 wrote:
    GavH wrote:
    a_n_t wrote:
    upload a ride here http://ridewithgps.com/trips/11047 ?

    just so I can see how accurate their power readings are? Its saying 326 watts average on a club 10.

    Ant, have you tried the GPS2 Power plugin for SportTracks? It estimates power based on all the variables gathered from devices such as a 705. I don't profess to know how accurate it is or fully understand how it works, but it would be interesting to see what it reckons the power for this ride is.

    Interesting.

    Might be worth removing the power data from a known ride and uploading that into sporttracks with the plugin to see how actual versus estimated compares. Would do it myself only I don't have actual gps data (only estimates based on a google maps which would only be introducing yet another estimate so no point in that).

    Anybody using both who would like to put up a comparison?


    Yes I did think about doing a comparison. I went into sporttracks, something I haven't used for a long time, started to download the plugin, then though why bother. The plugins are a nightmare that I can't be arsed with and what would I or the original poster gain from it.

    That's not me trying to be funny or unhelpful, just a realisation that power is great if you've got an accurate/repeatable meter, but all these other ways of estimating/ measuring it are at the end of the day a waste time. I think a n t probably realised that himself judging by his response later on.
  • a_n_t
    a_n_t Posts: 2,011
    so long as i can knock a minute off this season i'm not that bothered!
    Manchester wheelers

    PB's
    10m 20:21 2014
    25m 53:18 20:13
    50m 1:57:12 2013
    100m Yeah right.
  • a_n_t
    a_n_t Posts: 2,011
    dp
    Manchester wheelers

    PB's
    10m 20:21 2014
    25m 53:18 20:13
    50m 1:57:12 2013
    100m Yeah right.
  • chrisw12
    chrisw12 Posts: 1,246
    a_n_t wrote:
    so long as i can knock a minute off this season i'm not that bothered!

    and that's what I was getting at only a lot longer :oops: . It doesn't matter what power you produce, it's a TIME trial, I'd kind of lost sight of that earlier in the week.

    I think to be on the safe side you should aim for one minute 12 seconds though. :wink:

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