ZX-6R Brakes

[McJamweasel]

I just took the front brake pads out to check them and noticed that the pistons (6 of em) don't seem to have moved evenly - some are further out than others. Is this normal?
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BCF: Be yourself, just don't be an arse.

[Kickstart]

Hi

Not sure, but probably not unusual. Multi piston brakes normally have smaller leading pistons to even out to pressure to try and make the pads wear evenly.

Might be worth giving them a clean up.

All the best

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

[McJamweasel]

[MarJay]

McJam,
I was reading performance bikes today and there was a little side article about tockico 6 pots. It said that pad wear is often uneven because some of the pistons can stick. It also said that a regular cleaning will do them good.

What you won't want to hear is the first line:

Tockico 6 pots found on some suzukis and kawasaki's are pants.
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British beauty: Triumph Street Triple R; Loony stroker: KR1S; Track fun: GSXR750 L1; Commuter Missile: GSX-S1000F
Remember kids, bikes aren't like lego. You can't easily take a part from one bike and then fit it to another.

[Scooby]

Probably not worth splitting the caliper or anything, just remove the pads and get the pistons out as far as they'll go without popping out and getting brake fluid everywhere and use a wire brush and brake and parts cleaner to get the crud off them. If the dust seals are still there they're probably on their way out so try and remove them if they seem to be restricting the movement of the pistons, then pump the brakes a few times, push the pistons back, get rid of any more crud that appears on them, and repeat until they're free from crap and operate smoothly. Then replace the pads and put them back on the bike. Shouldn't take you too long to be honest, probably an hour or so.
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A big enough hammer fixes anything!

[Kickstart]

Hi

I would say leave the dust seals in place (if any are fitted, the Japanese rarely bother which is why their brakes tend to seize up so badly). Pump the pistons out and use a tooth brush (preferably one that you don't want to use on your teeth anymore). Pump them out and back in a few times.

You are meant to use a special grease on calipers around the seals. This rubber grease is expensive and not that easy to find.

All the best

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

[McJamweasel]

Oh yeah, something I forgot to mention before. In the middle of each section of the pads was a blue (gas-flame blue) spot, taking up around 1/4 of the total area of the pad.

Wassit?
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BCF: Be yourself, just don't be an arse.

[Kickstart]

Hi

Possibly excess heat in that area.

All the best

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

[McJamweasel]

Nothing to worry about then?

And another one. The slight knocking that I've had from the front end has got worse since I took the pads out, I've just checked and it seems to be coming from a rattling pad. How can I stop it?
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BCF: Be yourself, just don't be an arse.

[Kickstart]

Hi

Is there meant to be an anti rattle shim there, but missing?

All the best

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

[Scooby]

Quite probably is missing, probably took out my a former keeper
____________________
A big enough hammer fixes anything!

[McJamweasel]

From looking at the workshop manual there doesn't seem to be anything missing.
____________________
BCF: Be yourself, just don't be an arse.