Originally Posted by
tstansbury
For reference, my stoker is 5'8." We fiddled a few times with the frame design and location of the couplers. We ultimately placed them behind the captain's seat tube, so we end up with two triangles and three straight tubes. Seven confirmed everything would fit before we pulled the trigger.
That is exactly what we finally arrived at and how we did it. My stoker is also 5'8" plus a smidgen. As designed, her top tube length will be 85cm---33.5 inches! Signed off on the design today. Now for the components.