Originally Posted by
Ron Damon
Shimano used to make or makes the Capreo cogset with a 9t small sprocket.
As do SunRace, some boutique houses and a little Italian company called Campagnolo. Shimano and SRAM both offer 10T.
The thought that "
small wheels make the folder well-suited for low gears but not tall ones" does not comport with the evolved component market of 2023.
"The Brompton's low gearing wasn't the issue, but it fell a bit flat on the flats owing to the lack of tall gearing which is inherent to the small wheel sizes."
In that video, the rider was indeed handicapped by the lack of taller gears. GNC chose, for whatever reason, a folding bike brand with odd, limited drivetrains, and then chose the two-speed model from that brand. It was a specific rather than generic representation.