Hi everybody,
I am a mechanical engineering student who has had an interest in bike fitting now for a couple years. While I am not an actual bike fitting professional, I have spent some time and thoughts on the subject.
I have made a power point presentation which I have attached and would like to hear as much input on it as possible.
To summarize it: If you look at the biomechanical force and momentum equilibrium of the rider/bike system, the derived formula shows saddle setback as a factor affecting the weight distribution on the hands. It also shows that road bike fit is power output dependent (more exact vertical pedal force) and you can not fit A position on a road bike but rather A RANGE of positions the rider will adapt to during different riding scenarios. I also put in some thoughts on the affect of climbing. I myself consider that part not final and think there are other effects at play in this situation too. I included that part to show that I do not think this contradicts my earlier theory.
I have done some experiments with three riders, which showed results represented by the pictures I took of the one rider.
As I said, I would love to hear the input and criticism of some professional fitters on that topic.
Oh and please note that English is not my native language, so I apologize for any grammar and spelling mistakes, and if something should not be clear, I'll try and rephrase it.
And a merrry Christmas to you all,
Ingmar
Heres the link:
https://www.dropbox.com/...o/saddle_Setback.ppt
I am a mechanical engineering student who has had an interest in bike fitting now for a couple years. While I am not an actual bike fitting professional, I have spent some time and thoughts on the subject.
I have made a power point presentation which I have attached and would like to hear as much input on it as possible.
To summarize it: If you look at the biomechanical force and momentum equilibrium of the rider/bike system, the derived formula shows saddle setback as a factor affecting the weight distribution on the hands. It also shows that road bike fit is power output dependent (more exact vertical pedal force) and you can not fit A position on a road bike but rather A RANGE of positions the rider will adapt to during different riding scenarios. I also put in some thoughts on the affect of climbing. I myself consider that part not final and think there are other effects at play in this situation too. I included that part to show that I do not think this contradicts my earlier theory.
I have done some experiments with three riders, which showed results represented by the pictures I took of the one rider.
As I said, I would love to hear the input and criticism of some professional fitters on that topic.
Oh and please note that English is not my native language, so I apologize for any grammar and spelling mistakes, and if something should not be clear, I'll try and rephrase it.
And a merrry Christmas to you all,
Ingmar
Heres the link:
https://www.dropbox.com/...o/saddle_Setback.ppt