THE RALEIGH TWENTY

Your ever-expanding web resource for the Raleigh Twenty
and other classic small-wheel bicycles.

Kingpin Progress 1

Seat post drop limiter

« Back to Album Photo 12 of 28 Previous | Next
Seat post drop limiter
This is the bottom of the seat tube extender that fits into the seat tube - and a carbon 27.2mm seat post fits into the top. Because I'm routing the rear brake cable inside the seat tube, I wanted some way to stop the seat post being accidentally lowered enough to foul - and possibly damage - the brake cable. Brazing a small nut to the inside of the insert tube will limit the downward travel of the seat post, so that it can't foul the brake cable. The insert tube's potential downward travel is limited by an external button that I brazed on to fit a notch in the top of the seat tube. Now there's no way the brake cable can be damaged by the seat post or the insert being pushed down far enough to hit it!
Posted by davepalk on December 30, 2012 Full Size|

Post a Comment

Oops!

Oops, you forgot something.

Oops!

The words you entered did not match the given text. Please try again.

Already a member? Sign In

0 Comments