2013 SLIDING VERTICAL DROPOUTS VS ECCENTRIC BOTTOM BRACKETS

TECHNICAL BULLETIN 22 Jan 2013 SLIDING VERTICAL DROPOUTS VS ECCENTRIC BOTTOM BRACKETS To properly install a belt drive, proper tension and alignment are needed. There are multiple ways to achieve this, but the two most common methods employed are the... More

TECHNICAL BULLETIN 22 Jan 2013 SLIDING VERTICAL DROPOUTS VS ECCENTRIC BOTTOM BRACKETS To properly install a belt drive, proper tension and alignment are needed. There are multiple ways to achieve this, but the two most common methods employed are the sliding vertical dropout and the eccentric bottom bracket (EBB). Gates does not recommend the use of standard horizontal dropouts. Below is a list of the basic pros and cons comparing sliders to EBBs. Attention to design and implementation can reduce or eliminate the issues for both designs, making either choice desirable. Sliding Vertical Dropouts Vertical Dropouts with EBB Pros: Pros: Allows angular adjustment of the rear wheel. Usually considered to be the lower cost solution. Ability to integrate the break in the frame with the dropout. Side to side adjustment within the BB shell to fine tune belt line. Can allow for more adjustment range, providing more gearing options. Wheelbase doesn’t change with gearing change. Cons: Parallel adju Less