Another can't pressure brakes question.

[jellywrestler]

Pistons were a bit rough, but passable. Yea I was surprised they were so expensive.

so if you haven't even got the nouse to bleed a basic brake system, how did you have the knowledge to assess the pistons were not perfect but good to go? brakes are there for two reasons, to slow you down and to stop you running into someother person, somebody needs to think of the children here.

[nodrog:Me]

They are, when I reinstalled I did not apply rubber grease. In fact, never heard of it

Brembo calipers on late model Ducatis are awesome for the seals pulling the pistons back of the disc face when they become dirty and/or dry.

2 pump braking is an art form.

[Drew]

2 pump braking is an art form.

It's interesting all right. Terrible on a chair with masiver lever throw too.

I find it's often caused by the seals having worked their way to the lip closest to the disk.

[omamari]

I've done the brakes on my prev bikes, tf125, rmx250, bandit, exc. Never had the problem of air in mc plunger. Learn something new don't ya. I'm also a mechanical engineer, so I've got a bit of common sense regards a seal piston interface. I won't go into a race/road knowing I have bad brakes, it hurts me as well as the children.

[nodrog:Me]

It's interesting all right. Terrible on a chair with masiver lever throw too.

its took me fucken ages to work out why the brakes were so shit.

Googling the problem only came up with retarded yanks spending a fortune on aftermarket master cylinders and still not solving the issue.

5 mins with a set of feeler gauges and I found that it was the pistons retracting, 30mins with some brake clean and rubber grease had it sorted.

[F5 Dave]

Sorry I've missed something here. You sat it wasn't releasing? Either the piston stuck, or more likely the wrong aftermarket lever pushing the MC piston a bit.

Would get worse when hot.

Take lever off to see if releases then file lever do over or buy right lever.

[omamari]

Pistons were really dirty, grimy. Bike I guess was outside a lot, as there was water in tank too. Took out pistons and cleaned. Now they release a lot better.

Now not as firm as before, so will put some red grease on them. Hopefully then they I can get good pressure up. Have spent the day making knobs for the dirt bike, getting a bit excited about it ..