Power meters · Public discussion

Position critique?

Started by donm · · Last activity · 13 posts · 1,535 views

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Power meters
Published
23 January 2007
Last activity
25 January 2007
Original author
donm
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13
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  1. I've been playing around with my position to find the right setback, reach and saddle height to optimise power output and comfort. The position in the link below seems to offer the best power (measured over 20-30min), while still being comfortable and reasonably aerodynamic. Does the position look reasonable? Any thoughts or suggestions? Please ignore the mess in the background - it's time for a tidy-up.

    s57.photobucket.comdonm79

    Thanks,
    Don

  2. donm said:

    ..... Does the position look reasonable? Any thoughts or suggestions?....

    I'm not even gonna try to do a remote bike fit via photos, but cripes man bend your elbows!

  3. daveryanwyoming said:

    I'm not even gonna try to do a remote bike fit via photos, but cripes man bend your elbows!


    Like this?

    theage.com.auLance Armstrong wideweb 430x296.jpg

    or this?

    img.aktualne.centrum.cz235464 ivan basso a bj rne riis.jpg

    or this?

    pedalmag.com42d3071453030floyd.jpg

    or this?

    ciclismomurciano.comGRUPETA%20NAVIDAD%20087.jpg

  4. no reason to get snippy with dave. OK so you found a few photos of the pros locking their elbows, did you notice that none of them are racing photos - each one looks like a training ride or fitting and the people are all riding at what appears to be a rather relaxed pace and chit chatting. When you are too stretched out to bend your elbows you don't have as good control over the bike for one, and it will likely cause you to have neck and shoulder issues for another. Your elbows act as shock absorbers if you can't ride with a comfortable bend in them its much easier to jerk the bike around if you hit a bump or pothole and all that road noise and jostling translates right up to your neck and shoulders and makes them hurt.

  5. donm said:

    I've been playing around with my position to find the right setback, reach and saddle height to optimise power output and comfort. The position in the link below seems to offer the best power (measured over 20-30min), while still being comfortable and reasonably aerodynamic. Does the position look reasonable? Any thoughts or suggestions? Please ignore the mess in the background - it's time for a tidy-up.

    s57.photobucket.comdonm79

    Thanks,
    Don

    For power and comfort, the most upright position should be the best. For maximum speed, as during a time trial (only a concern if you compete and do TT's or road races) the position that yields the highest watts/CdA is the fastest. Finding highest watts/CdA usually involves wind tunnel work, or possibly use of photos and a power meter to figure it out, or even just seeing what position gives you the fastest time over a set out and back TT course.

    In general well bent arms in the drops with a flat back means you
    have a good aerodynamic position. The more upright you are, the less
    your arms will be bent. I would consider this such a personal matter that
    it isn't possible for us here to help you, because some people can't be comfortable in the low position (back pain) and others generate so much less power being bent over that it's better to ride upright anyway.

  6. Eden said:

    no reason to get snippy with dave. OK so you found a few photos of the pros locking their elbows, did you notice that none of them are racing photos - each one looks like a training ride or fitting and the people are all riding at what appears to be a rather relaxed pace and chit chatting. When you are too stretched out to bend your elbows you don't have as good control over the bike for one, and it will likely cause you to have neck and shoulder issues for another. Your elbows act as shock absorbers if you can't ride with a comfortable bend in them its much easier to jerk the bike around if you hit a bump or pothole and all that road noise and jostling translates right up to your neck and shoulders and makes them hurt.


    Sorry, didn't mean to be snippy, just wanted to show that the straight elbows weren't necessarily a problem. I've taken onboard some advice and moved the saddle a touch forward. I'm also bending my elbows in the new photos, which can be seen at the link below. I was easily able to bend my elbows in the previous photos, but was running from camera (on timer) to bike to take the phtotos and didn't adopt a true riding position. See if these look any better:

    s57.photobucket.comdonm79

  7. donm said:


    s57.photobucket.comdonm79

    Now that's more like it, the new set of photos look good. Are you comfortable in the lower position?

  8. daveryanwyoming said:

    Now that's more like it, the new set of photos look good. Are you comfortable in the lower position?


    Yeah, I'm comfortable in this position. I'll get out on the road tomorrow to make sure! Thanks for your help.

  9. donm said:

    Yeah, I'm comfortable in this position. I'll get out on the road tomorrow to make sure! Thanks for your help.


    Looks a bit like my 'setup' with the pro2 tire on the front, conti trainer tire on the back, PowerTapSL and Fluid2 providing the resistance.

    Welcome to the winter pain shed =)

  10. Eden said:

    no reason to get snippy with dave. OK so you found a few photos of the pros locking their elbows, did you notice that none of them are racing photos - each one looks like a training ride or fitting and the people are all riding at what appears to be a rather relaxed pace and chit chatting. When you are too stretched out to bend your elbows you don't have as good control over the bike for one, and it will likely cause you to have neck and shoulder issues for another. Your elbows act as shock absorbers if you can't ride with a comfortable bend in them its much easier to jerk the bike around if you hit a bump or pothole and all that road noise and jostling translates right up to your neck and shoulders and makes them hurt.

    Actually that first one is Paris-Nice 2005.

    Sorry, couldn't resist. 😄

    Donm,

    You (and your Powertap) seem to have answered your own question. If the position offers the best power/comfort balance and, as Eden quite rightly points out, you can control the bike in that position then it's job done. Although personally I'd want to see how power/comfort were after more than 20/30 mins.

  11. donm said:

    I've been playing around with my position to find the right setback, reach and saddle height to optimise power output and comfort.


    Honestly the best suggestion would be to go get a professional bike fit. There is a certain amount of science that goes into a fit. I would see if anybody can reccomend a "quality bike fitter" in your area.

  12. USCswimming said:

    Honestly the best suggestion would be to go get a professional bike fit. There is a certain amount of science that goes into a fit. I would see if anybody can reccomend a "quality bike fitter" in your area.

    Home much difference is there between a pro-fit and following a chapter from a cycling book on bike fitting? I just tried the Lemond fit technique from is book dated around 1990.

  13. watts4speed said:

    Home much difference is there between a pro-fit and following a chapter from a cycling book on bike fitting? I just tried the Lemond fit technique from is book dated around 1990.


    I had a rider gain 20 Watts at FTP after getting a his bike fit properly to him.

    He bought a new custom bike (previous bike fit him like um well not like a glove) and most of the difference was in the last fore aft saddle adjustment.

    It realy depends on your physiology and how far off your fit is now.

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