brake conversion issue

[King Herald]

Hi I've a bolt on conversion on my xv535 and the rear master as a purpose built spot on conversion see pics is OK to use with braided lines

That swing arm looks a little frail, to me, is it a pro built conversion or just one you've built?
There's a hell of a lot of twisting torque going through it when one rear wheel hits a pot hole or bump in the road.
If it were mine I'd add a couple more tubes to triangulate the two sides together.

[Andy from Sandy]

Master cylinder is in the wrong place, IMO. It will get thrown around and will get air bubbles forming. If the fluid splashes around enough it may even expose the holes in the bottom letting air into the brake line.

Dedicated motorcycle cylinders have a rubber diaphragm on top which I assume is to stop the fluid sloshing around.