as per my latest "dirty deeds" pictures below I have got my "rear brake" sort of working via the foot pedal

It started when I was fixing front end A Frames etc and I did a bit of work on front calipers to adjust etc, and I noticed the master cylinder has 3 pipes comin off and not just 2, ie to front only so then I saw the rear brake also has a hydraulic feed so the hand operated lever actually goes to all 3 brakes

so looking at the diag for rear brake it is both mechanical and hydraulic

but what I am not able to see without taking it all off is how do the 2 work together - like when I step on the foot pedal does that simply activate a fully mechanical link to the pads or does it do it via the hydraulic system [sort of like a secondary master cylinder] so as to feed back pressure to the front brakes??

I am thinking it is purely mechanical to back brake only but some of the design things I am seeing are rather ingenious so I am still wondering

 

The foot pedal is mechanical it works off of 2 small dowl rods inside of the caliper,when you change the pads make sure you lube the dowl rods very good. hope this helps!

davey

 

thanks for that, and as I expected

1/ hand lever goes to 2 x front brakes plus 1 x rear via hydraulics

2/ foot pedal only goes to rear via mechanical