@Viking1 - I appreciate your note! Sounds like we are fairly similar in size. I am 6'2" and my inseam is probably around 35 inches. Exact measurement would depend on how the measurement was taken. I used the method from the Gazelle website copied below and came up with a 605 cm measurement.
Did you happen to try this method yourself?
From the Gazelle Website:
"Can I measure my frame size myself?
You can calculate the frame size of your bike yourself by measuring your inseam. But how do you do this?
- Grab a tape measure
- Take off your shoes and socks and place your feet 20 cm apart
- Measure (or have measured) the distance from the crotch to the ground
- Multiply the distance by 0.68: this is your ideal frame size
- Do you have a bike with a suspension seat post? Then calculate: frame size minus 4"
Using the Gazelle suggested frame sizes, you would normally have been fit to a large frame. Sounds like you limited that to a medium to help manage the height of the top bar. I would normally be fit to a large as well but also considering a medium.
I am curious as to how much of your seat stem is exposed between the top of the seat tube and the bottom of the seat securement bracket? In looking at your photos it looks like it would just be 2 or 3 inches??