Looking at their charts, for the road frames at least, it seems Marcus designs the frames for riders who:
May have an average or longer torso than most people and
either have short legs or are very limber.and
May have arms that are longer than the average of the human population.
If you look at the stack & reach, it's a very stretched out and very low position that Marcus designed for.
This may not work for the 'average' body proportion, and it is not likely to work for people with longer legs and shorter torsos, average arms (such as myself).
For example, in an "ideal" frame I would be searching for a stack of around 550, a reach around 380. I can go shorter on reach and compensate with a longer stem, but not more than a few mm longer on reach because I don't want to run an 80mm stem. My seat height on my current frame is 752mm. I am 175.26cm tall. I can run Storck's smallest
frame, but have quite a lot of spacers above the headset, perhaps exceeding the mfg's recommendations. Storck recommends that I run the 55cm frame, but based on the reach this would be unusable. For most mfgs I'm usually at a 54 or 53 for starters. That being said, here is Storck's geometry for the Aernario:
So if it works for you, then you can rock a fine piece of equipment. If it doesn't....
|| Other projects in the works.