We are often asked ... which Brompton gearing should I get?
Urban 2 speed C Line
Utility 3 speed C Line (discontinued in 2023)
Urban 4 speed P Line
Explore 6 speed C Line
so we tried to answer that scientifically in this video and failed
The video is split into sections:
0:00 | Intro
0:43 | Urban 2 speed test rides
1:48 | Utility 3 speed test rides
2:59 | P Line 4 speed test rides
3:56 | Explore 6 speed test rides
5:23 | Results analysis
8:08 | Outtakes
For the scientific answer - we would recommend the Brompton gear calculator below:
xldev.co.uk/bgc.html
Which allows you to choose the gearing / tyre combination and shows how fast you will be going at 70 RPM (pedal RPM) in each gear
Bike details:
Urban 2 Speed - 54T chainring - 12/16T rear sprockets - Kojak tyres
Utility 3 Speed - 50T chainring - 13T rear sprocket - Marathon Racer tyres
P Line 4 Speed - 50T chainring - 4 rear sprockets - Continental Contact Urban tyres
Explore 6 Speed - 50T chainring - 13/16T rear sprockets - Marathon Racer tyres
Our sträva rides with the data are here - we didn't post all the data as the details was getting too long!:
Brompton Urban 2 speed loop:
/ strava
Brompton Urban 2 speed spin out test:
/ strava
Brompton Utility 3 speed loop:
/ strava
Brompton Utility 3 speed spin out test:
/ strava
Brompton P line 4 speed loop:
/ strava
Brompton P line 4 speed spin out test:
/ strava
Brompton Explore 6 speed loop:
/ strava
Brompton Explore 6 speed spin out test:
/ strava
So - in summary - go try a handful of demo Bromptons and decide for yourself based on your personal riding style / preferences!
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