Bike Fit leads to frustrating confusion.

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Comments

  • Ezy Rider
    Ezy Rider Posts: 415
    i just looked at the measurements from the fitter,in my bare feet he measured me at 1726mm which as it turns out is 5 ft 8 and not the 5 ft 9 i thought i was. would this have negligible influence if i was to choose the 53 over the 54 , or vice versa ?


    gosh ,somany questions over selecting a frame........sorry guys :oops:

    so its 5ft 8 with 29 inside seam. :oops:
  • Chad_c_Mulligan
    Chad_c_Mulligan Posts: 78
    I'm 5'8" with 29" legs and I ride a 54cm Trek 1.9 which fits me pretty well and I have no complaints.

    I have a 54cm Genesis Vapour which on 90% of days feels like it's a perfect fit, on other days it feels a touch too small.
    --
    FCN 9
  • Ezy Rider
    Ezy Rider Posts: 415
    Chad_c_Mulligan wrote:
    I'm 5'8" with 29" legs and I ride a 54cm Trek 1.9 which fits me pretty well and I have no complaints.

    I have a 54cm Genesis Vapour which on 90% of days feels like it's a perfect fit, on other days it feels a touch too small.



    when you ride your trek, are you stretched out to reach the hoods or do they fall right into your hands when you sit a tad more upright ?
  • oldwelshman
    oldwelshman Posts: 4,733
    Bloody hell what a thread.
    I have a 58cm steel frasme and ride it in winter no problems, I have one 53.5cmframe and another 54cm frameand have set them all up so I can ride, just try what the guy suggested it makes sense to me.
    Failing that but a pair of platform shoes and ride with those as I dont think anything will work for you :D
    http://s290.photobucket.com/albums/ll245/oldwelshman/
    http://www.youtube.com/watch?v=aK5Bfqj5fxY
  • ChrisSA
    ChrisSA Posts: 455
    Ezy Rider wrote:
    chris, that reach of 686mm , what height are you ?

    for me it was 655mm and im 5 ft 9 inches.

    that seat to bars drop of 80mm you mentioned terrifies me, ar$e in the clouds and face on the ground posture sounds frightening to me

    Hi Ezy,

    I was measured as 1785mm - 5'10''. What are your torso and arm lengths? To be honest the Comfort wasn't what I was after, but did not know. That is why I had the Sport fit printed out. That has a reach of 709m at the drop of 80mm.

    My personal feeling is that the bikefitting.com algorithm is set for a 25mm drop for comfort, and 80mm for sport. The rest of the bike is moved around to reach that target. And at 80mm the result is very nice. Merak has pointed out that 80mm is a 'norm' for road bikes. My MTB has a drop akin to 25mm - probably more.

    Please also remember it is a starting point, and the fit should be tweaked whilst on a turbo. I had a new fit today for Triathlon Sport, and both I and the fitter agreed that with my current frame we could not fit to the drawing. However a quick session on the turbo showed that my best-effort wasn't too bad (for leg extension, aerobar positions etc).

    Perhaps you are looking for a more sit-up-and-beg position on your road bike - in which case perhaps flat bars are the way forward?
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  • Ezy Rider
    Ezy Rider Posts: 415
    no, i love road bikes and those flat hybrid bars just add so much drag to the rider. i want to use the road bars, but i dont want to be stretched out like elastic to reach the bars, know what i mean.

    im going somewhere with lots of bikes on sunday and im going to sit on 53s and 54s and bring my tape measure , and try to sort this out once and for all ,,,,,,sigh :oops:
  • Chad_c_Mulligan
    Chad_c_Mulligan Posts: 78
    Ezy Rider wrote:
    Chad_c_Mulligan wrote:
    I'm 5'8" with 29" legs and I ride a 54cm Trek 1.9 which fits me pretty well and I have no complaints.

    I have a 54cm Genesis Vapour which on 90% of days feels like it's a perfect fit, on other days it feels a touch too small.



    when you ride your trek, are you stretched out to reach the hoods or do they fall right into your hands when you sit a tad more upright ?

    On the Trek the fit just feels natural, on the 56cm I tried I felt like superman and was too stretched out. So in answer to your question, they fall right into my hands.
    --
    FCN 9
  • Ezy Rider
    Ezy Rider Posts: 415
    stem length chad ?

    take it you use 170mm cranks ?
  • FCE2007
    FCE2007 Posts: 962
    54. Done.
    Powered by Haribo.
  • Peddle Up!
    Peddle Up! Posts: 2,040
    Sound of would-be cyclists reading this thread and deciding to take up basket weaving instead. :shock:
    Purveyor of "up" :)
  • RoadyForever
    RoadyForever Posts: 170
    Some surprising posts here. I'm 5'10 and 56's seem the right size for me (tried a mates 54 before and it felt way too small), in fact I'm temped to try a longer stem on my new bike. :?
  • Chad_c_Mulligan
    Chad_c_Mulligan Posts: 78
    Ezy Rider wrote:
    stem length chad ?

    take it you use 170mm cranks ?

    Not the foggiest, whatever came with the bike.

    I'm not that exact on bike fit, I know what saddle height works for me and I keep that constant between bikes but apart from that it's whatever feels right.
    --
    FCN 9
  • ShutUpLegs
    ShutUpLegs Posts: 3,522
    Peddle Up! wrote:
    Sound of would-be cyclists reading this thread and deciding to take up basket weaving instead. :shock:

    #firstworldproblems

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