I think it's the first word you hear when building a bicycle.
This is generally the length of the vertical pipe (seat tube) that attaches to the seat.
With more sloping, what really matters is top tube length.
Strictly speaking, the front and back position of the saddle (also related to the seat angle) is also an important factor.
Recently, there is a lot of sloping, and the criteria for judgment are rather the top tube, seat angle, and head tube length due to the increase in ahead. Recent smart (known) manufacturers list the head tube length properly.
In the case of Bell Equip, we don't use the fitting scale (a fictitious size matching table) that we normally use.
The first thing to check is height, weight, length of each part, and flexibility.
Since the length of the body (bones) does not change, the only thing that changes is the change in position due to experience.
If you measure this on a scale, it will be the current size (before the change), so I have experienced that it will not be able to respond to the change after getting on.
The fitting scale makes it easy to determine the size at that point in time, but the length of each part of the body varies from person to person, so it is impossible to determine the frame size based on the saddle height on the seat scale alone. I noticed for that reason.
of the reason
Joint (bone length) position does not change, apart from the "growing man" (youth)
You can't decide the height of the handle without ignoring flexibility. Even if you decide only the frame size, it may not be possible to match it well if the head tube length of the frame is short.
Even if you are tall, there are many people who actually have a long neck and head, so there are times when you are not different from a short person.
Most importantly, your body changes as you run, the saddle is higher, and the stem is longer. This means that the frame can also be large.
Considering this, I found that I could decide the size more flexibly by actually measuring rather than using a fitting scale.
Among them, when it comes to the frame size, even if the top tube is the same size, if the top tube is long, there are people with a long torso, and if it is short, there are people with long legs.
There are long and short head tube lengths, depending on the manufacturer.
The basic size is about 65% of the inseam measurement, but as I wrote before, it varies considerably depending on the length of the torso, flexibility, and age, so it is an area that must be carefully determined.
Small people in Belle Equip, a little big for first-timers
Experienced people and large people often make it smaller, but it changes considerably depending on the frequency of running.
That's why Belle Equipe doesn't really care about the very first frame size (seat tube length).
The important thing is whether the size can be handled later.