Can anyone help me about hydrolic brake?

hey guys some of you may follow me on youtube and know im building a racer, well i upgraded to 1 inch axle and upgraded my brakes too, they are front brakes off of an rm 85 and im having trouble getting them to work properly i tried bleeding the line and got some air bubbles out but it still wont pump up pressure, its full of brake fluid, the pads move a little bit, but not enough for the brakes to work, any help is greatly needed. my mower needs to be 100% done by sunday april 15! please help if anyone knows anything about hydrolic brakes thank you

Did you gravity bleed them or pressure bleed them? I have found that a lot of systems need to be bled through the bleeder under pressure to get all the air out, just make sure you don't run the master cylinder dry.

I pressure bled them

You say the pads move a little but won't hold, it still sounds like an air issue. I had a motorcycle once that needed to be bled from the caliper to the master before they would work. The pads should pump out to the rotor and stay. They don't move much to apply brake. The caliper piston should not suck in all the way when released.

There's no pressure on the master cylinder, you press it in and the pad move less than a s1/16 of and inch and you let it out and It goes back, should I try and reverse bleed the line???

If you have access to a presure bleeder I would try it. Did you bleed the master before hooking it up? If not try bleeding the master first, then hook it all up and then bleed the system normally. When bleeding the master you should feel some resistance when it is bled of air.

Alright I'll try that and I'll see what it does thanks alot

We have a week to figure it out, keep us posted.

If its not fixed by wednesday I'm building my own mechanical brakes, after 6 I can work on the mower so I can try some stuff.

No success but I didn't try long, my dads going to try and get a brake bleeder, I got a lot of other work that needed done though I'm cutting it real close

either the master cylinder or caliper needs rebuilt on my rm85 brake set up so i ditched that and build my own following the idea of a guy off youtube his channel is wertheroriginal or something close to that its his design