... For example, i calculated "the best stem lenght" as an aproach, for setback or non setback seatpost (mtb-road). It´s not very accurate, because i haven´t considered frame angles, but you will find that your best stem length is exactly what i suggest.
The correct procedure is this one. (if you have the right frameset size or at least not very wrong)
1.- Fit your saddle height
2.- Fit your saddle-b.bracket setback ´
3.- Fit your saddle nose- handlebar axis lenght, and choose your best stem length according to your top tube length.
4.- Fit your saddle - handlebar height.
I am new in the forum and would really like to have a help from you.
I am assembling a new MTB and have doubts on the size of the stem.
I am using a 19,5" frame that has a long Top Tube Lenght = 62,8cm.
My body measurements are:
Inseam - 86cm
Elbow-Middle Finger - 49cm
Height - 178cm
Flexibility - 8
The BiomecyclingV8 showed the following results:
Saddle->Handlebar - 55,9cm
Saddle Handlebar drop - 7,9cm (+/-1cm)
Saddle-Pedalier Seatback - 8,4cm
Stem Lenght - 4,7cm (for Seatback seatpost / saddle lenght = 26,5cm / horizontal size = 62,8cm)
But if I fit all measurements like the recomendations above, for a distance of 55,9cm from the saddle to the handlebar, I will need a stem with 6,0cm while the Biomecycling recomends 4,7cm.
What should I do??
What is more important?? Saddle>Handlebar distance or stem lenght??
Thanks for any help on the size of stem.