ZOMBIE THREAD! ARGH!
Yang07 we'd like to welcome you as a new member to the Forum.
Suggestion: the unofficial protocol/etiquette within the Forum generally discourages calling up older threads especially ones dormant for a few years.
One reason, other members have to scroll down through a lot of messages that may be unrelated to your interests to find your post.
The preferred/recommended approach is to start a new thread, especially if you want to post a supposition for discussion that's easy to find and starts at the top of the other posts.
As
dddd mentioned "Interesting thread here, I think that this subject has been discussed before?"
A Google search of Bike Forums will find lots of related threads.
To put my 2¢ in, many quill type stems have the size stamped or molded into them. For whatever reason Nitto stems are 5mm longer center to center than the size listed on the box and the stem itself.
... and as
SurferRosa mentioned, for many years, 3TTT stems came in 5mm increments. So did some early Cinelli and ATAX stems.
BITD, this was the standard method for measuring stem length. It worked as a starting point for years:
The human body is an amazing organism that can quickly accommodate to a lot of physical situations like minor differences in stem length, bar and saddle height an so on.
Fine tuning those adjustments plus changing some components as needed are what helps to make a bike fit comfortably especially on rides over a few mile long.
verktyg