User Tag List

Page 1 of 3 123 LastLast
Results 1 to 20 of 49

Thread: A dumb bike fit question about saddle height.

  1. #1
    Join Date
    Oct 2012
    Posts
    219
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Default A dumb bike fit question about saddle height.

    I know internet bike fitting is stupid so I apologize in advance. I accept whatever ridicule should come my way.

    I have a 37" (94cm) inseam and using the Lemond method (inseam * .883) this dictates about a 32 3/4" (ok, actually 32.67" but whatever, call it 83cm) saddle height (measured along the seat tube from the center of the BB yada yada yada). I've basically used this height for a couple of years and it's been fine. A week or so ago I decided to try it slightly higher for no particular reason, so I raised it about about 5mm give or take.

    On my ride Sunday, I decided I didn't like the higher position so about 15 miles in I tried to lower it back to where it was, but because sometimes I am completely inept, I ended up lowering it way too much and screwing it all up. Out in the middle of nowhere without a tape measure to guide me, I fixed it by raising it to where it felt "right" and I resolved to check it when I got home. The rest of the ride, about 45 miles, went great. The saddle height felt a little different from where it had originally been (83cm) but pretty close, and I even set a PR on a big climb. I noticed I could spin easier and my feet were staying flat. (I generally pedal toes down.)

    When I got home I checked and I had the saddle height at about 32" (81cm)!

    So I know the Lemond method is just a starting point and all that, but is it possible that being 2cm lower than that point is "correct" for me? 2cm seems like a huge difference but I don't know if anatomical factors could make that a reasonable variance. I guess I'm only talking about 2% here.
     

  2. #2
    Join Date
    Aug 2012
    Location
    Coventry, RI
    Posts
    727
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Default Re: A dumb bike fit question about saddle height.

    Quote Originally Posted by zandrrr View Post

    I fixed it by raising it to where it felt "right"
    That's the method I use
     

  3. #3
    Join Date
    May 2009
    Location
    In da Montana Rockies
    Posts
    1,786
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Default Re: A dumb bike fit question about saddle height.

    Tape measures never lie, but they don't think either. If you like it and it seems "faster" why change because you read something in a book?
     

  4. #4
    Join Date
    Jul 2008
    Location
    Oakland Ca
    Posts
    3,332
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Default Re: A dumb bike fit question about saddle height.

    Quote Originally Posted by zandrrr View Post
    I know internet bike fitting is stupid so I apologize in advance. I accept whatever ridicule should come my way.

    I have a 37" (94cm) inseam and using the Lemond method (inseam * .883) this dictates about a 32 3/4" (ok, actually 32.67" but whatever, call it 83cm) saddle height (measured along the seat tube from the center of the BB yada yada yada). I've basically used this height for a couple of years and it's been fine. A week or so ago I decided to try it slightly higher for no particular reason, so I raised it about about 5mm give or take.

    On my ride Sunday, I decided I didn't like the higher position so about 15 miles in I tried to lower it back to where it was, but because sometimes I am completely inept, I ended up lowering it way too much and screwing it all up. Out in the middle of nowhere without a tape measure to guide me, I fixed it by raising it to where it felt "right" and I resolved to check it when I got home. The rest of the ride, about 45 miles, went great. The saddle height felt a little different from where it had originally been (83cm) but pretty close, and I even set a PR on a big climb. I noticed I could spin easier and my feet were staying flat. (I generally pedal toes down.)

    When I got home I checked and I had the saddle height at about 32" (81cm)!

    So I know the Lemond method is just a starting point and all that, but is it possible that being 2cm lower than that point is "correct" for me? 2cm seems like a huge difference but I don't know if anatomical factors could make that a reasonable variance. I guess I'm only talking about 2% here.
    It's "intellectually dishonest"* to overthink this, particularly as there are a myriad of answers to be had if you just use the search function.

    You are just a meme.

    *from earlier.
    "Old and standing in the way of progress"

  5. #5
    Join Date
    Oct 2012
    Posts
    219
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Default Re: A dumb bike fit question about saddle height.

    Quote Originally Posted by jitahs View Post
    It's "intellectually dishonest"* to overthink this, particularly as there are a myriad of answers to be had if you just use the search function.

    You are just a meme.

    *from earlier.
    You're cute. Will you be my internet boyfriend?
     

  6. #6
    Join Date
    Jul 2008
    Location
    Oakland Ca
    Posts
    3,332
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Default Re: A dumb bike fit question about saddle height.

    Quote Originally Posted by zandrrr View Post
    You're cute. Will you be my internet boyfriend?
    Pedophila ain't my thang.

    You sound exactly like that other guy, newb.

    Get a fit with power numbers. The rest is navel gazing.

    And I'm outta here.
    "Old and standing in the way of progress"

  7. #7
    Join Date
    May 2008
    Posts
    7,138
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Default Re: A dumb bike fit question about saddle height.

    if you ride enough to be fit, have no anatomic deformaties and you have some confidence in your perceptions then you are the authority wrt to your fit. This is not a knock on fitters or formulas, ive just not seen one yet who can pedal the bike for you.

  8. #8
    Join Date
    Aug 2009
    Location
    victoria, bc
    Posts
    1,910
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Default Re: A dumb bike fit question about saddle height.

    Jitahs is right

    Ride where it hurts the least

    Beyond that try power

    Either or have someone with a good eye place you where it is right
     

  9. #9
    Join Date
    Jun 2009
    Location
    Aix-en-Provence
    Posts
    10,704
    Post Thanks / Like
    Mentioned
    8 Post(s)
    Tagged
    0 Thread(s)

    Default Re: A dumb bike fit question about saddle height.

    94cm inseam here as well. What pedals and crank arm lenght do you use ?
     

  10. #10
    Join Date
    Apr 2009
    Location
    Dead Center WA
    Posts
    682
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Default Re: A dumb bike fit question about saddle height.

    Quote Originally Posted by Bobqzz View Post
    That's the method I use
    Yup, THEN you use the tape to measure your saddle height for future reference.

    I need to adjust my saddle height when I change shoes.
     

  11. #11
    Join Date
    Oct 2010
    Location
    Chappaqua, NY
    Posts
    3,283
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Default Re: A dumb bike fit question about saddle height.

    Here's how I set my saddle height.
    1) Lemond formula
    2) Set it somewhere around there, but usually a little lower, because that feels high
    3) Ride a few hundred miles
    4) Decide whether it feels too low
    5) Ask riding buddies whether they think I look like I should come up a little, and raise it when they concur
    6) Repeat
     

  12. #12
    Join Date
    Jun 2008
    Location
    On a rock in the middle of the ocean
    Posts
    7,122
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Default Re: A dumb bike fit question about saddle height.

    Quote Originally Posted by zandrrr View Post
    You're cute. Will you be my internet boyfriend?
    Back off n00b. He's my dysfunctional co dependent boyfriend.

    Anyway, he won't be happy with you unless you sing the praises of Miata.
     

  13. #13
    Join Date
    Oct 2012
    Posts
    219
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Default Re: A dumb bike fit question about saddle height.

    I am not necessarily trying to figure out what the proper saddle height for me is per se. Rather, this new position that seems to work relatively well strikes me as being quite different from established fit doctrine as I understand it, so either my understanding is wrong or the saddle height is wrong. I had always assumed that the Lemond method "was a good starting point" in the sense that it got you to within a few mm, but 2cm different from that seems excessive.

    Anyway I eventually plan on getting a pro fit one day when I can make it to a big city, but there ain't no such thang out here in the sticks where I live.
     

  14. #14
    Join Date
    Oct 2012
    Posts
    219
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Default Re: A dumb bike fit question about saddle height.

    Quote Originally Posted by Lionel View Post
    94cm inseam here as well. What pedals and crank arm lenght do you use ?
    Dura-Ace 7810 and 180mm Rival cranks.
     

  15. #15
    Join Date
    Apr 2009
    Location
    Dead Center WA
    Posts
    682
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Default Re: A dumb bike fit question about saddle height.

    Quote Originally Posted by zandrrr View Post
    I am not necessarily trying to figure out what the proper saddle height for me is per se. Rather, this new position that seems to work relatively well strikes me as being quite different from established fit doctrine as I understand it, so either my understanding is wrong or the saddle height is wrong. I had always assumed that the Lemond method "was a good starting point" in the sense that it got you to within a few mm, but 2cm different from that seems excessive.

    Anyway I eventually plan on getting a pro fit one day when I can make it to a big city, but there ain't no such thang out here in the sticks where I live.
    Most of these fit standards were made by measuring the setups riders were already using and comfortable with. THEN they created the formulas.
     

  16. #16
    Join Date
    Apr 2009
    Location
    Dead Center WA
    Posts
    682
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Default Re: A dumb bike fit question about saddle height.

    Quote Originally Posted by zandrrr View Post
    Dura-Ace 7810 and 180mm Rival cranks.
    The Lemond formula is BB to saddle top. You are using longer cranks, which would need a lower saddle ht. (I use 182-185mm cranks. The saddle ht change is not linear)

    Most current shoes and pedals place your foot closer to the pedal spindle than most of those in use when the formula was created.

    Also, femur length differences for the same inseam can change the preferred saddle height.

    All of those can easily account for a 2cm lower saddle height.
     

  17. #17
    Join Date
    Oct 2010
    Location
    Chappaqua, NY
    Posts
    3,283
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Default Re: A dumb bike fit question about saddle height.

    Quote Originally Posted by zandrrr View Post
    180mm Rival cranks.
    This right there would lead me to expect you'd be at least 5mm to 7.5m below Lemond's formula.
     

  18. #18
    Join Date
    Oct 2012
    Posts
    219
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Default Re: A dumb bike fit question about saddle height.

    Quote Originally Posted by shiggy View Post
    The Lemond formula is BB to saddle top. You are using longer cranks, which would need a lower saddle ht. (I use 182-185mm cranks. The saddle ht change is not linear)

    Most current shoes and pedals place your foot closer to the pedal spindle than most of those in use when the formula was created.

    Also, femur length differences for the same inseam can change the preferred saddle height.

    All of those can easily account for a 2cm lower saddle height.
    Quote Originally Posted by christian View Post
    This right there would lead me to expect you'd be at least 5mm to 7.5m below Lemond's formula.
    These are both very helpful. I had assumed the Lemond formula was more or less constant by assuming crank length would grow in some proportion to leg length. Also, I believe my femurs are longer than would be "normal" for my inseam length.
     

  19. #19
    Join Date
    Nov 2009
    Location
    North Carolina
    Posts
    1,629
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Default Re: A dumb bike fit question about saddle height.

    I had a similar epiphany recently when I swapped my saddle but then went back to my previous one but forgot to raise the seatpost to compensate for the different saddle thickness. Found I dropped about 7 mm but discovered I could rotate my hips better, straighten my back and my knees didn't feel any different. Since I don't appear to be going any slower and feel more comfortable I'm sticking with it for now!
     

  20. #20
    Join Date
    Aug 2012
    Location
    Coventry, RI
    Posts
    727
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Default Re: A dumb bike fit question about saddle height.

    Quote Originally Posted by zandrrr View Post
    I had always assumed that the Lemond method "was a good starting point" in the sense that it got you to within a few mm,
    1mm= .040" Does anyone think that saddle height is that precise an adjustment or that the range of optimum saddle heights is that small? Butts are pretty squishy. 2cm seems to me to about about the range of saddle heights that would work okay. Resolution of 1CM is probably in the optimum range.
     

Page 1 of 3 123 LastLast

Similar Threads

  1. Today's dumb question
    By Tom in forum General Discussion
    Replies: 7
    Last Post: 02-10-2012, 10:21 AM
  2. Rail to top of saddle height: Arione and Aliante?
    By wooly in forum General Discussion
    Replies: 1
    Last Post: 04-28-2011, 10:49 AM
  3. quick dumb question re: Paul canti brakes
    By robin3mj in forum General Discussion
    Replies: 7
    Last Post: 01-20-2011, 10:12 AM
  4. My saddle height changed
    By AntLockyer in forum General Discussion
    Replies: 10
    Last Post: 07-28-2010, 09:21 PM
  5. Replies: 2
    Last Post: 07-27-2010, 05:42 PM

Bookmarks

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •