Bottom Bracket Options

From Pvdwiki
Revision as of 17:30, 1 November 2007 by Pvd (talk | contribs) (Shimano Press-fit)
Jump to: navigation, search

Shimano Press-fit

New Press-fit Bottom bracket from shimano. Dura-Ace. SM-FC7800-P

Shimano's new press fit BB will allow for a bunch more options with bottom bracket widths and walls.

Dura-Ace. SM-FC7800-P

Allows for full carbon bottom bracket shells.

Wider shell spacing for improved suspension designs.

press releases say that scott has exclusive rights in the first year, but we all know how the bike industry really works. Yeti already has show bikes with it. The AS-R.

Press-fit-bb-1.jpg
Press-fit-bb-2.jpg
Press-fit-bb-3.jpg
Press-fit-bb-4.jpg

Shell Design

  • Road, 86.5mm shell
  • MTB, 92mm shell
  • MTB, 89.5mm shell with a2.5mm spacer on right side

If the shell is not sealed, an inner cover is needed:

  • Road, FC-7800 Inner Cover
  • MTB, FC-M960 Inner Cover

The inside of the shell needs a 41mm diameter 9.3mm deep ream on each side.

Reaming and Facing the Shell