Today I replaced the pedals on a modern bike
with regular ones, which are just commodity
items from the hardware store. The modern
pedals are too short and, without using such
shoes, the interface to fixate them becomes an
uncomfortable blob under the foot.

Anyway first thing I noticed was an entry for
a hex key at the back of the pedal "screw
block" (?)

I removed the pedals just like a would with the
single speed, old steel bikes, i.e. a long
pipe, a 15mm wrench, a string to hold the crank
to the chainstay, CRC 5-56 (probably not needed
even), left pedal LT, right pedal regular, and
so very little force needed for the pedal to
come loose.

So what is the reason for the hex entry and
when do you use it?

BTW does anyone have an image with pedal parts
and terminology? I image googled but didn't
find anything to that end.

--
underground experts united
http://user.it.uu.se/~embe8573