It would appear that I have no front brake?

[Whosthedaddy]

The front brake has always been not as crisp as one would like, but as some bite harder than others I took it for gospel and got used to it.

The pads did rattle a little in the calipers, but as soon as you touched the lever and the pads moved onto the disc the rattle ceased and the brakes would slow the bike down.

I noticed it maybe yesterday, but definitely today the brakes had some awful fading and would only bite and stop the bike as you pulled the lever hard against the grip. It was absolutely pissing it down with rain so again put it down to the discs being wet.

On the way home, a different story.

Dry out and I can now manage to ride, yes ride with the front brake applied.

I have yet to check the fluid levels.

Its a hydraulic so no brake cable.

WTF could it be?
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Current : MSX 125 Past : CBR 900RR Monkeybike : c50 LAC : ZXR750 H2 : FZR600 : ZX7R P3 : YW100 : TRX850: Trophy 900 T309 : GSXR 600 L0: Monkeybike : XJ6S Whosthedaddy

[Kickstart]

Hi

Sounds like a caliper that is seizing up? Not sure which bike this is on, but maybe a sliding caliper that is no longer sliding, hence pulling the lever is just pushing one pad on one side of the disk but not pulling the other pad across.

All the best

Keith
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Traxpics, track day and racing photographs - Bimota Forum - Bike performance / thrust graphs for choosing gearing

[MaybeGuy]

BING... fluid level... does it feel spongy at all? you need to re-bleed them as you more than likely have air in the system...

the thing is... you need to find out where all that brake fluid went.
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Blue_SV650S wrote: it was a sh1te wheelie, but it proves that he can get it up in 3rd and can do angles. In summery, mattsprattuk is a gobby little sh1tebag, dopehead tw4t, but sadly for all of us, he probably isn't THAT full of sh1te!!
Kickstart wrote: Hi I tend to agree with Matt. All the best Keith

[Whosthedaddy]

[Kickstart]

Hi

Whip the calipers off and check the pistons are all moving about the same. Seized pistons on one side of a caliper would result in the other side just bending the disk.

All the best

Keith
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Traxpics, track day and racing photographs - Bimota Forum - Bike performance / thrust graphs for choosing gearing

[Gazdaman]

This happened when we accidently filled a mate's brakes with fork oil

A little seal in the master cylinder expanded and stopped any fluid being pumped from the reservoir down the hose.

Not saying this is what happened, but a possibility I guess.

Gaz

[Whosthedaddy]

How'd of thought that the 'pratt' would be right?

Well couldn't really see anything at ten last night but with the sun out I believe, fingers crossed, that I deduced what the problem may have been down to.

If a picture paints a thousand words then this is going to be a long reply:

https://www.bikechatforums.com/files/26122007024.jpg

After the debacle with the brakes on the FZR I didn't hold out much hope with trying to bleed these. With a quick trip to Halfords for some fluid and bleeding kit I held my breathe and what would you know, air and fluid came out as I pulled the levers and after 10 minutes per side no more air!

A little wheel spin and a trip round the block and all seems ok, but I will need the calipers to be cleaned and seals replaced to be sure but this can be postponed till the workshops are back open and I have a day spare to drop the bike off.

Tempting fate I hope not.

Unsure to where the fluid had gone?
____________________
Current : MSX 125 Past : CBR 900RR Monkeybike : c50 LAC : ZXR750 H2 : FZR600 : ZX7R P3 : YW100 : TRX850: Trophy 900 T309 : GSXR 600 L0: Monkeybike : XJ6S Whosthedaddy

[Nb]

[Finglonga]

[Whosthedaddy]

Its a fair cop guv, I'll come quietly.

[Finglonga]