Trike with VS Commodore Rear End

[Chris Rawlings]

Brake Pressure Prob, fitted new Master Cylinder,Bled Brakes several times now, builds pressure at Brake Pedal/Lever but not enough ?, Wheel Cyls seem ok, Adjusted brakes by rotating wheels backwards on Jack,adjusters click and seem to adjust,, but still not enough BP to Stop Wheels . Handbrake works good though.
Am puzzled.
Chris R.

 

[Trevor loves holden.]

All 4 or just one? Did you keep the fluid in the reserve while doing it.. Is your booster working, no air leaks..

 

[stick3]

did you bench bleed the master you can do it on the vehicle need some body to pump the pedal and hold, cracked the top brake line to you see the air bubbles, fluid squirt and tighten
do the same with the front pipe it goes to the rear brakes just have some rags and water handy

 

[Skylarking]

Since we are talking of a trike Frankenstein setup, you need to be specific as to what brake parts you are actually using and how the system is configured.

Is it a combination of motorbike brake parts (hand and foot lever) with commodore rear brakes? Does the hand brake only operate on the front wheel while the foot brake operates on the rear wheels? Is there a vacuum booster or ABS in the mix? Etc, etc...

But other than correctly priming and bleeding the master cylinder & calipers, you need to look at the fluid volume moved by the master cylinder(s) hand/foot pedal and ensure it is sufficient to operate the calipers (considering caliper Piston diameter & pad movement and pad wear). If the master cylinder doesn’t move enough fluid, the brake sys5em will never work correctly.

Has the system been engineered?

 

[Immortality]

Wheel cylinders? as in drum brakes?