A 50 inch wheel? Awesome! That's perfect for motorising your Penny FarthingHave now looked at lcd and manual - wheel size is in inches and can be adjusted by 0.1 increments from 1 to 50
How much speed did you manage to knock off with setting the diameter to 50 inches?Balance definately is the issue but I find if I can peddle that really helps me to keep my balance - don't know why, but it does!