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  1. #1
    Senior Member skinnyguy's Avatar
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    Did a FTP/LTHR test today w/ good results

    I haven't completed on of these on my trainer since May of this year and since i have trained more this year i wanted to compare from my previous results. In my last test i did the friel test and used the last 20min of a 30min effort to calcualte my LTHR. at that time i rode my trainer @ 31.72km/h for the last 20min @ 187bpm. today i decided to go for one hour straight and get a real reading of my FTP/LTHR to my surprise i was able to average 193bpm @ 31.13km/h. the first 30min was averaged @ 31.72km/h the second @ 30.54km/h. here is my dilema. i don't have a power meter all i have is this chart from the minoura website about a given wattage at any certain speed.
    http://www.johnhenrybikes.com/learn/...er-review.html

    according to this if it is correct i would be around 300w for the hour. i weight 56.81kg and that would mean 5.28 w/kg. how accurate would you say that chart is? i have only been riding a year and a half and while i think i am a strong rider i can't really see this a totally possible. i mean it could be but??? i really need a power meter i guess.

    i guess the w/kg really kicks in on the mountains which we have none of here in SW Ontario and 300w makes me an average rider on the flats. I think i live in the wrong area to take advantage of my body makeup.

  2. #2
    umd
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    It's possible but if you have that much power you should be dropping people on rides easily. Are you? How tall are you? I think it's more likely that the trainer-based power estimate just isn't very accurate.

  3. #3
    umd
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    Also 31 km/h is not very fast, you shouldn't need anywhere near 300W to do that speed. Did you maybe mistake mph and km/h?

  4. #4
    Senior Member skinnyguy's Avatar
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    I am 5' 11.5" tall. I only ride on ocassion w/ a small group ride from our LBS which is a mix of Tri athaletes, and your typical weekend warriors and another masters MB rider. It is a MOnday night recovery ride for me. I can drop them fairly easy if i want but usually just relax and chit chat. No mistake on the speed, its a mag/fluid trainer the weight on the mag side is 3.3lbs so thats pretty heavy and combined with the variable fluid resistance its pretty hard to pedal. oh well i guess i need a power meter.

  5. #5
    Senior Member ericm979's Avatar
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    The way I read that chart you did 280 watts. Its hard to say how accurate the trainers are but I'd expect them to be a lot less accurate than a power meter.

    Still, it sounds like you're fairly strong. If you are interested, you should do some racing.

  6. #6
    I am the cheese sgrundy's Avatar
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    1. No, you can't get a reliable power estimate from a trainer. Even many trainers with built-in power measurement aren't very accurate.
    2. Have a donut.

  7. #7
    Snail-paced new boy AlexTaylor's Avatar
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    Don't forget at that speed on the trainer you aren't fighting the wind etc...
    Twitter - @NapD
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  8. #8
    Senior Member skinnyguy's Avatar
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    i did some racin fthis year and moved to cat 3 a few races into the season so i am a cat 3 for next year. we'll see how it goes.

  9. #9
    powered by Racer Ex gsteinb's Avatar
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    Quote Originally Posted by skinnyguy View Post
    so i am a cat 3 for next year.
    eat two donuts.

  10. #10
    gmt Grumpy McTrumpy's Avatar
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    (puzzled)

    how can you get to be a cat 3 after just a few races?

  11. #11
    bzzzz fuzzthebee's Avatar
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    Quote Originally Posted by Grumpy McTrumpy View Post
    (puzzled)

    how can you get to be a cat 3 after just a few races?
    Here, in Ontario (Canada) we need 10 points to upgrade from Cat 4 to Cat 3. A win is worth 5 points, 2nd place is worth 4 points, etc., down to 1 point for 5th place. In terms of ability, our Cat 3 is probably similar to your Cat 4.

  12. #12
    umd
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    Quote Originally Posted by fuzzthebee View Post
    Here, in Ontario (Canada) we need 10 points to upgrade from Cat 4 to Cat 3. A win is worth 5 points, 2nd place is worth 4 points, etc., down to 1 point for 5th place. In terms of ability, our Cat 3 is probably similar to your Cat 4.
    Interesting... is there a cat 5 or does everyone start in cat 4 like women in the US? It's funny though, aacording to what you wrote you need half the number of points to upgrade but you also get half the points for a win, well at least for road races anyway. Are those points for any race or is there any differentiation between road races and crits?

  13. #13
    bzzzz fuzzthebee's Avatar
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    Quote Originally Posted by umd View Post
    Interesting... is there a cat 5 or does everyone start in cat 4 like women in the US? It's funny though, aacording to what you wrote you need half the number of points to upgrade but you also get half the points for a win, well at least for road races anyway. Are those points for any race or is there any differentiation between road races and crits?
    Cat 4 (Senior 4, actually) is the beginner category. RR and crits give the same number of points.

  14. #14
    Pokes On Spokes JPradun's Avatar
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    I'm pretty sure you put out between 270-280w, according to that (poorly organized) chart.

    Still very strong for your weight. Nonetheless it can under or overestimate your power by up to 20%, so I wouldn't have faith in it. Just use it for consistency reasons rather than accuracy reasons.
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