View Single Post
Old 09-16-19, 04:00 AM
  #16  
BromptonINrio
Stardust
 
BromptonINrio's Avatar
 
Join Date: Apr 2017
Location: Rio de Janeiro
Posts: 376

Bikes: Dahon Curve Sturmey Archer Srf8; Brompton Sturmey Archer Srf8; Brompton M6r

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 161 Post(s)
Liked 35 Times in 28 Posts
Originally Posted by Winfried View Post

Which SA dynamo+drum brake is it? Did you need to enlarge the fork?



According to the Brompton Gear Calculator, an S-A XRF8(W) even with a 34T crankset + 16T sprocket offers a low gear of 2.81m/35.2" which is still too high for hilly areas.

Are there ultra small 32/22T double cranksets?
35" is not bad, its similar to road bike gearing.

to lower that you can put 17 or 18 sprocket on rear(and maybe sand the frame down a few mm.

the kinects shop feom scotland uses the sturmey archer srf8 with 18/33 sprocket crankset gear.

he adivices smaller than 33t the chain will rub on metal square cabble holder on chainstay.

Last edited by BromptonINrio; 09-16-19 at 04:06 AM.
BromptonINrio is offline