I want a new bike. Again.
So I want a folding bike with a steel frame and an internally geared hub. What are my options? I know about the Raleigh Twenty; but it doesn't fold up small enough for practical use. I know about the Brompton; I've never been a fan but I suppose I could give it another try. What else am I missing?
I am considering a Speed Uno... I can reuse the wheel (with Sturmey Archer XRF8 hub) from my Downtube. But what about brakes?
There's no provision for a rear rim brake setup on the Speed Uno.. you'd need a coaster brake hub or cable operated drum brake hub...
Brompton seems the obvious choice based on your usage.
The Dahon 'Speed' models are chromoloy steel, and with some 'slight of hand' (magic ratios, half links, external chain tensioners), a hub geared wheel could be installed. I've done it successfully on my Jetstream XP.
Also, there are plenty of reports of frames breaking at the seat post collar on steel framed folders with long seat posts as well.
I'd be looking hard at Brompton if I were you.