the length of the cockpit is your arm as pictured, but its meant to be over the bars. (as in the end of the stem)
that is a very rough estimation and it works well.
There are a number of other factors, and there are plenty of systems you can use on the web.
have a look at Wrench Science.
the length of the cockpit is your arm as pictured, but its meant to be over the bars. (as in the end of the stem)
that is a very rough estimation and it works well.
There are a number of other factors, and there are plenty of systems you can use on the web.
have a look at Wrench Science.