just curious

how tall are you that 160mm is the reccomended length

also

i recall a test in a bike mag years ago
that had all riders improve speed with longer cranks
i dont recall if it was a properly conducted scientific study
but it certainly suggests that very short cranks
are rare for a reason

also
regardless of what a formula says
or doesnt say
your comfort is the most important
so ignore everything between
just curious
and the second also