Originally Posted by canklecat

The only weight estimate I could Google for the Momentum Vida Low-Step is about 46 lbs. Does that sound about right?

That's pretty much what I'd have guessed for a step through frame sturdy enough to withstand the pressure on a bottom bracket with that geometry, although maybe a bit heavier than I'd have estimated. Most of them seem to use massive ovalized downtubes, and comparably oversized seat and chain stays, to ensure adequate stiffness and fatique resistance with aluminum.

That's why I'm betting the best way to get a relatively lightweight step through aluminum frame is with a folding bike. If I'm recalling correctly from browsing folder catalogs around 2015 or '16, there were step through folders weighing around 30+ lbs complete with wheels, etc.