Saddle height
#26
~>~
Joined: Mar 2013
Posts: 5,929
Likes: 187
From: TX Hill Country
#28
Started too low, went the wrong way.
The Guimard/Le Mond system (if calculated correctly) will take time/miles to adjust to but it is well proven for a classic competitive fit.
"Guimard raised my position an inch and a half...he told me to raise it slowly...once I got used to it I realized how much difference the right position makes." -Greg Lemond's Complete Book of Bicycling
There is a "Fitting Your Bike" sub-forum, but that is not a substitute for a good coach and/or experience local fitter.
-Bandera
The Guimard/Le Mond system (if calculated correctly) will take time/miles to adjust to but it is well proven for a classic competitive fit.
"Guimard raised my position an inch and a half...he told me to raise it slowly...once I got used to it I realized how much difference the right position makes." -Greg Lemond's Complete Book of Bicycling
There is a "Fitting Your Bike" sub-forum, but that is not a substitute for a good coach and/or experience local fitter.
-Bandera
#29
~>~
Joined: Mar 2013
Posts: 5,929
Likes: 187
From: TX Hill Country
PS
Have you read pg. 128 regarding crankarm length in "The Second Step: Overall Height" from "Greg Lemond's Complete Book of Bicycling" ISBN 0-399-13229-5?
-Bandera
#30
For myself, I go by the knee angle for general adjustment and tune by feel from there, and I can see the OP is doing so as well. I aim for the 145-155 range (or 25-35 from fully extended), but am not averse to going higher or lower if I notice problems.
I did not read pg. 128 of "Greg Lemond's Complete Book of Bicycling", nor have I seen anyone mention adjusting height with regards to crank arm length in any formal way when LeMond/Guimard formula is discussed. It seems that this hasn't become a part of common wisdom when it comes to setting saddle height using said formula. And, again, even if someone does adjust for crank arm length per instructions from LeMond's book (or uses another formula which takes it automatically into account, such as the 109% one), any and all formulas that calculate saddle height as a percentage of inseam length will still be unreliable in setting the optimal knee bend angle, and knee bend angle seems to be considered as the most important measurement by most current fitters. I do not think that angle measurement is be-all-end-all when it comes to saddle height, but if one is able to measure knee angle, one should believe this measurement more than any calculation by inseam length.
More on knee angle vs. inseam length: Saddle Height and Power | CyclingAnalysis.com
I did not read pg. 128 of "Greg Lemond's Complete Book of Bicycling", nor have I seen anyone mention adjusting height with regards to crank arm length in any formal way when LeMond/Guimard formula is discussed. It seems that this hasn't become a part of common wisdom when it comes to setting saddle height using said formula. And, again, even if someone does adjust for crank arm length per instructions from LeMond's book (or uses another formula which takes it automatically into account, such as the 109% one), any and all formulas that calculate saddle height as a percentage of inseam length will still be unreliable in setting the optimal knee bend angle, and knee bend angle seems to be considered as the most important measurement by most current fitters. I do not think that angle measurement is be-all-end-all when it comes to saddle height, but if one is able to measure knee angle, one should believe this measurement more than any calculation by inseam length.
More on knee angle vs. inseam length: Saddle Height and Power | CyclingAnalysis.com
Last edited by Fiery; 03-24-14 at 01:49 AM.
#31
Senior Member
Joined: Apr 2010
Posts: 3,078
Likes: 2
From: SoCal
Bikes: Roubaix SL4 Expert , Cervelo S2
I'm currently trying the Steve Hogg method. I have already lowered the seat about 5mm. He is not a big fan of angles or formulas.
https://www.stevehoggbikefitting.com...ard-can-it-be/
https://www.stevehoggbikefitting.com...ard-can-it-be/
#32
Thread Starter
Senior Member
Joined: Jan 2014
Posts: 53
Likes: 0
For myself, I go by the knee angle for general adjustment and tune by feel from there, and I can see the OP is doing so as well. I aim for the 145-155 range (or 25-35 from fully extended), but am not averse to going higher or lower if I notice problems.
I did not read pg. 128 of "Greg Lemond's Complete Book of Bicycling", nor have I seen anyone mention adjusting height with regards to crank arm length in any formal way when LeMond/Guimard formula is discussed. It seems that this part has become a part of common wisdom when it comes to setting saddle height using said formula. And, again, even if someone does adjust for crank arm length per instructions from LeMond's book (or uses another formula which takes it automatically into account, such as the 109% one), any and all formulas that calculate saddle height as a percentage of inseam length will still be unreliable in setting the optimal knee bend angle, and knee bend angle seems to be considered as the most important measurement by most current fitters. I do not think that angle measurement is be-all-end-all when it comes to saddle height, but if one is able to measure knee angle, one should believe this measurement more than any calculation by inseam length.
More on knee angle vs. inseam length: Saddle Height and Power | CyclingAnalysis.com
I did not read pg. 128 of "Greg Lemond's Complete Book of Bicycling", nor have I seen anyone mention adjusting height with regards to crank arm length in any formal way when LeMond/Guimard formula is discussed. It seems that this part has become a part of common wisdom when it comes to setting saddle height using said formula. And, again, even if someone does adjust for crank arm length per instructions from LeMond's book (or uses another formula which takes it automatically into account, such as the 109% one), any and all formulas that calculate saddle height as a percentage of inseam length will still be unreliable in setting the optimal knee bend angle, and knee bend angle seems to be considered as the most important measurement by most current fitters. I do not think that angle measurement is be-all-end-all when it comes to saddle height, but if one is able to measure knee angle, one should believe this measurement more than any calculation by inseam length.
More on knee angle vs. inseam length: Saddle Height and Power | CyclingAnalysis.com
#33
I'm currently trying the Steve Hogg method. I have already lowered the seat about 5mm. He is not a big fan of angles or formulas.
https://www.stevehoggbikefitting.com...ard-can-it-be/
https://www.stevehoggbikefitting.com...ard-can-it-be/
[MENTION=364258]veganpower[/MENTION], personally, I measured without shoes or cycling shorts. I use relatively thin chamois anyway, and wearing cycling shoes only adds the height of the heel pads, not the actual cleat stack. Using LeMond formula against this measurement, I get saddle height slightly lower than what I actually have at the moment.
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