Brompton Gearing

Sturmey archer gears on a brompton they work reliably with a minimum of effortbut what if something goes wrong this short video explains how to adjust your. The brompton derailleur system is designed specifically to give optimum shifting on the short stays and small wheels of the brompton bicycle.

Brompton New Non Chamfer Bb Shell Schlumpf Speed Drive Gearing System Ats Sporting Goods Cycling Bicycle Co Bicicleta Brompton Bicicletas Portabicicletas

Brompton folding bikes come in 4 gearing options including the single speed 2 speeds 3 speeds and 6 speeds.

Brompton gearing. The 3 speed version has 13t rear sprocket and 50t front chainring. Standard gearing is achieved using a 50 toothed 50t chain ring the front cog. As the brompton tensioner is not designed for such a dramatic gear differential it barely provides sufficient movement to keep the chain tensioned and allow folding in either gear so a slightly worn chain might cause problems.

Brompton offer three levels at which you can pitch your gears high standard and low. The 6 speed version has 13t 16t rear sprocket and 50t front chainring. When considering brompton gearing the options are a minefield.

On the left side was the selector that controlled the 2 speed derailleur. This tiny hand brazed bicycle had a gear selector on both the right and left handlebars. 1 speed for flatland riding.

A brief overview of how to use the 6 speed brompton to get the most out of the gears. The 2 speed version has 12t 16t rear sprocket and 54t front chainring. You can choose from 6 speed 3 speed 2 speed or 1 speed and then fine tune your choice with or options.

The brompton standard gear range bsr provides three evenly spaced gears so you can climb hills cruise in normal traffic or haul ass when you have a tailwind or when being chased by your neighbor s dog. If you really hate hills and want your brompton geared lower than this the 44t will lower all your gears by 12. The first time i test rode a brompton folding bike it was a 6 speed.

Bromptons lightest gear option. Unlike a traditional geared bicycle the brompton can contain a 2 speed derailleur plus a 3 speed internal gear hub. We offer several different gear options and dealers will make recommendations depending on your specific riding conditions.

Specifically the standard single speed has 12t rear sprocket and 54t front chainring. How do you reach a suitably informed decision.

Brompton Gearing Chart Jpg 750 331 Brompton Brompton Bicycle Bicycle