Well Gordon and I had the thing working last time by removing the main cylinder and get the air out of it. I have no idea what happened to the damn thing. It seems though as if the size of the brake pad is tiny and the pressure is way too great for what we are using it. There might be a better way but for now I just want to fix this so I can keep practicing. In this little incident it had revealed how much I am just not used to the machine yet and my reactions were off. I have no business flying it yet!!!!

Now I wish we had taken a little time to check a few things before we left yesterday.

Most likely is hydraulic system breached, so pressure cannot build. This should be indicated by the presence of hydraulic fluid at the breach (follow the tubing).

The other possibility, although less likely, is internal failure of the master cylinder so that no pressure is created and system is still intact.

If you believe that the system is not putting enough pressure on the pads, then you will have to change out the master cylinders to the 5/8" size.

I saw air in the line. There is no visible leak. It got air in the line. Maybe one of the nipples don't seal properly.

Shoot, just put an air compressor onboard, and use air brakes!

Another item on the check list, DIAPERS.
Seat tanks have holes in the bottom to relieve the suction for just such events as this.

Who needs enemies when you have helping friends like them???

air in the line had to come from a breach somewhere. wasn't there before or pedal would have been spongy, which it wasn't when you left the hangar.

There is most likely hydraulic fluid somewhere at and near the breach.

Some times a cylinder will move too fast for the fluid to flow and a bubble of air will pass by an 'o' ring, Seen it with Enstrom dampers,

This is not simply an air bubble. The pedal is easily pushed to full travel with no effect on braking the wheel. A simple air bubble causes the pedal to be spongy while it still develops pressure and has some braking effect.

We will see Saturday. I am sure it's an easy fix

shouldn't be too hard to find!!!

Air can leak too!
And much quicker!

Some master-cylinders have a check-valve and can be 'pumped-up' which shortens the peddle throw.
On this type, if dirt props up the valve, the peddle can't build pressure and if that dirt moves away, the pressure can then buildup. Intermittent bastards.
I don't know how your master-cylinder is designed.....dirt may not be the problem.

This is the type I have. A crap for 450 bux!

Doesn't look like they have reservoirs.....which is needed to 'pump-up' a system.
If there are no leaks, it could do what its doing if the fluid is passing by the piston seal or the piston has a small check-valve not seating.

I would start by turning those master cylinders upsidedown... so the output is at the bottom. Then you need a resivour on the top. End result is NO AIR in the system.

Hope you figure it out over the weekend... it is a 'pit in the stomach' feeling when one puts their foot on the brake pedal... and nothing happens...

U have my deepest sympathy ....... WHEN are our miserable bitchettes going to quit "spitt'n the dummy" & turn into our sweet baby's!

I got new parts & did a taxi around this AM with the go-pro aimed at the front gear ... to compare ... how it looks now VS a vid I took a couple of months ago!!

Just been over to the machine shop ... getting the engineers inputs on how to get the nose wheel assembly I have at present - rebuilt - machined real tight ( no hand filing/honing) - Secure again ..... finish out the flying year .... & then I'll see if Jake has time this winter to do his design magic to make something that will be stout solid & safe!

Somehow I think you'll be up & going again before I!

My week-end project ... pull off 2 windshields & pod & get to the front fork /steering horn bolt to remove the front fork! Bloody Hell - SO SICK OF THIS REBUILDING!!!!

Good luck with the brake-line demons! ( been there - & How!)

Thanks hon I am a relentless sucker. Shit brings me down only momentarily. Then the next morning I wake up and realize how good I have it because it is not the daily food that I have to fight for it is only a stupid brake!
I do believe that this is a test. ANd I ain't going to fail it!!!
I know you won't either. We both had our close calls and the seemingly never ending shit popping up on the way along our little adventures.
If it doesn't kill you....ya know.....We are soooooo ficking strong by now
I wish you were closer. I'd love to help you out. I am sure we could figure out a better nose wheel.
I am happy with mine!!!! Very happy indeed.
One by one. We will get our machines airworthy

Get Jake to make you a nose wheel......I may be able to get a picture of the dominator wheel for you if you would like.

That is an outstanding thought and a great way to put ones 'troubles' in their place.....