85 K100 Basic - rear master cylinder not receiving fluid from reservoir

[rawhites]

Rob,

The larger diameter master cylinder (16mm) will result in LOWER line pressure for a given pedal input. It will result in less pedal travel. It will give a more firm pedal feel. All of these things are things that I prefer.

It will result in more pedal input pressure for a given stopping effect (you will have to press harder). How much harder is the question. Since your rear brakes do a smaller proportion of the stopping, I’m seriously considering
changing from the 13mm on the rear of my K75S (which works just fine) to the 16mm master to gain the possible advantages listed above.

Hey Lee - I upgraded to the 16mm master....but it seems the pushrod isn't engaging it early enough, if I screw in the pushrod as far as it will go. Do I need to swap out the pushrod from the old 13mm one?

Thanks!