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novelty wheels
54x12 on a Brompton is approx 75"
so around 45x16 on a normal 28mm 700c -
I used to ride 58X12 on a Brompton and it was pretty much spot on for 90% of London terrain - as above the smaller wheels mean acceleration is a lot easier but top end speed suffers, so a much higher gear is needed to maintain anything above 25kph without spinning at 200rpm!
Lovely build and kind of interested…..
duncs
Dick
@Brain-Stew
I'm not a current Brompton owner/rider, but the gearing on this confuses me. 52x12 is a pretty large gear on a normal road bike. Is there a reason it's so big on this?