Bike Forums - View Single Post - Brompton 3-speed hub

08-28-17 | 09:28 AM

#90

1nterceptor

LET'S ROLL

Joined: Nov 2009

Posts: 4,789

Likes: 59

From: NEW YORK, NY - USA

Bikes: 2014 BMC Gran Fondo, 2013 Brompton S6L-X

Quote:

Originally Posted by kego

Hello,

Looks like first action will be to change 13t to 15t (or try 16t - need to discuss the mechanicher guy in the bike shop) and second 42t crank... They should optimize...

Or improve my condition

)

I bought a used 3 speed Brompton. I found the standard gearing too high. 50T chainring, 13T rear sprocket.
I swapped the rear wheel with my 6 speed temporarily; using the 16T sprocket & the tensioner for der. Also
swapped crank/chainring, 39T. Pretty common size with Shimano:

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