Where do you put the third wheel - in front or in back? A one hundred and forty year-old question!


https://cimg1.ibsrv.net/gimg/bikefor...4926fbc3d1.jpg

So here we have an example of each in tandem form (the rear wheel of the second machine - blue arrow - is rather obscured). You'll see the problem right off: one of the riders is outside the wheelbase, risking going over forwards* or backwards on slopes, potholes or under braking. To counter this, small caster wheels (red arrows) were added. These were positioned above the roadway during normal operation.


https://cimg4.ibsrv.net/gimg/bikefor...1afca5db90.jpg

You'll note both gentlemen having to look around the ladies!



*I bet that ruined the date!