>>1355801based on a 48 inch wheel penny farthing for the use of riders 168 cm to 173 cm (somewhat disregarding crank length)
with 1 to 1 drive ratio gives a gear (Very roughly) equivalent to 42x23 tooth on a bike with 622x23 wheels (good for around 23 kph at 100 rpm)
to get around this and assuming 100 rpm some sturmy archer hubs will be used as an example
to be used for commuting at around 30 to 35 kph
IGH C50
30.72
38.4
48
60
74.88
for people who want to do around 50 kph
to match a road bike with 52x12 (113.88) requires 137% overdrive
to mach an hour record bike with 60x14 would require (131.50) requires 170% overdrive
with this in mind a faster penny farthing would need something like an 8 speed hub with most of its ratios +
IGH S80 (W)
48
62.4
71.04
81.12
92.16
105.6
120
156
a little tall in gear inches at the top end
but this would allow a smaller wheel to be used allowing for shorter riders
along with lower weight and better advisability
