Click on the table to embiggen.
Here is what I would start with for all frame sizes:
- rSogn: Standard diameter 8/5/8 top tube and 9/6/9 down tube.
- The XL rSogn probably will have standard diameter 9/6/9 for both tubes.
- Heat treatment may be considered; This will increase
stiffnessstrength and price.
- 7/4/7 may be prone to denting.