Originally Posted by
fietsbob
Come to think of it, ..
there are kits made in England to replace the front fork with a pair of wheels ,
steered by linkage , like in a car, So, differential drive problem is moot,
I highly DON'T recommend that kind of solution (2 front wheels). Abysmal riding experience.
Just so we are clear, this is the solution fietsbob suggests, and it's awful: