Lower stop disc set (Mk3)
The lower stop disk keeps the rear wheel locked in place in conjunction with the seat post when the Brompton is folded.
Using the thread / locknut it can be adjusted to get the optimal position.
If the gap between the seat post and lower stop disc is too small, then the seat post will catch / rub on the lower stop disc when raised lowered.
if the gap between the seat post and the lower stop disc is too big then the frame hook (on the front forks) which keeps the bike folded may come un-hooked when you pick up the folded Brompton.
The lower stop disc (or LSD) assembly supplied here is a Mk 3 type.
It can be used equally well as a replacement on your bike already fitted with a Mk 3 type as on a bike fitted with a Mk 2 type.
The assembly consists of the following parts:
Plastic lower stop disc (with thread)
Washer
Nut
Bolt
(These parts are supplier pre-assembled)
It comes complete with a flat washer and a concave washer (in case you lost yours from the rear brake caliper).
