Trouble bleeding brakes (still spongy)

[Hen]

To me it sounds like pushing the calipers out those couple of mm and standing them up would be a good idea. New hoses aren't too expensive.

Though I suppose it would be wise to check all the other fixes that people have suggested beforehand.

Hen

[CrUZida]

New hoses aren't the expensive part.
Its new adaptors at ~$300 that I wanted to avoid.

[Hen]

Are they made from unobtanium? Or is it something to do with the engineer signing off on it?

Surely you can, or have friends who can, machine a new set up for a lot less than that.

Hen

[amichie]

Don't forget to bleed the rears also.

[o_man_ra23]

Don't forget to bleed the rears also.

re read the thread, he already did several times.

Cheers, Owen

[CrUZida]

Are they made from unobtanium? Or is it something to do with the engineer signing off on it?

Surely you can, or have friends who can, machine a new set up for a lot less than that.

I could explain it, but I honestly can't be assed.
Yes, its to do with engineer, I'll leave it at that.
Its what he wants, so its what he gets.

[kingmick]

shame you need him{Engineer} or you could tell him what he is, a dead set TOOL like a lot of so called Engineers are.
If you cant get them right, just get them done at a place that pressures them, atleast its not something that has to be done at intervals like the oil filter. Take your own fluid and they shouldnt charge much to do it, its a pain but atleast you will get you pedal back.

[JustCallMeOrlando]

Nah Mick, he's a pretty damn good engineer. I'd highly recommend him, he will favourably interpret the rules if it's of sound engineering, but he still has to cover his own arse.

[kingmick]

I know what you mean{ i miss Dave Roberts, RIP} but he shouldnt have told him to do it like that.
I used to love dave leaning against any of the cars i did and saying" so what do you want on the report" It was a trust thing but also he couldnt care half the time with other people.
I have been raking my brains trying to figure an easy, cheap solution to this problem, if its what i thought it was.

[CrUZida]

No one told me to put the caliper on that angle.
That was purely my decision, and in hindsight, obviously a very bad one.

The cheapest/easiest solution for this is to unbolt the calipers, rotate them so that they are vertical, bleed them, and then bolt them back up on the angle.

But the engineer will not accept this as a permanent solution.
So I need to design new brackets to mount them vertically.

[YLD-16L]

One method of removing air bubbles trapped in calipers that won't escape under normal bleeding methods is to create a vacuum at the bleed nipple causing the small bubbles to expand. This can often be enough to get the trapped air to reach the bleed port and escape (flow out as a single bubble). This works well but you will need a large syringe and you need to ensure that the syringe and nipple do not leak under the vacuum you create (you do this with the brake pedal depressed obviously).

If you can apply enough of a vacuum this method can make trapped air that is barely visible to the naked eye expand to a bubble that is quite large and will then rise in the fluid quite rapidly.

This method is a last resort usually used when product design prohibits any of the usual methods from working.

[CrUZida]

You left a comma out of your signature.
It should read

7MA61 - only 20? wow... you're pretty, young and successful wish i had that status

[kingmick]

No one told me to put the caliper on that angle.
That was purely my decision, and in hindsight, obviously a very bad one.

The cheapest/easiest solution for this is to unbolt the calipers, rotate them so that they are vertical, bleed them, and then bolt them back up on the angle.

But the engineer will not accept this as a permanent solution.
So I need to design new brackets to mount them vertically.

Sorry i thought you ment he told you to mount them like that! in that case i take it back, he isnt the tool lol

[o_man_ra23]

(you do this with the brake pedal depressed obviously).

Depressing the brake pedal will cause PRESSURE, not VACUUM inside the calliper, and cause the air bubble to shrink rather than swell. If your method is what I think it is, then you need to depress the pedal, crack the bleed nipple and release the pressure, then attach the syringe and suck like a $2 hooker with a pending payrise. You should also fill the clear line from the syringe to the nipple with as much fluid as inhumanly possible so as not to get an air bubble in there.

But, the permanent solution is to not be a stinge ass, and get the new brackets made. Then problem disappears. Test this theory first by trying to bleed with the calliper vertical as previously described.

Cheers, Owen

[YLD-16L]

If your method is what I think it is, then you need to depress the pedal, crack the bleed nipple and release the pressure, then attach the syringe and suck like a $2 hooker with a pending payrise. You should also fill the clear line from the syringe to the nipple with as much fluid as inhumanly possible so as not to get an air bubble in there.

That's what I meant, your expalanation has added in more detail I'll happily admit I am shite at explaining things to people even though it's perfectly clear in my mind