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Minisport Alloy Calipers Brake Pad Rattle Driving Me Crazy!


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#1 Torqu-E-Cycles

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Posted 28 March 2025 - 10:47 PM

Anyone else using minisport alloy calipers and found a fix for the horrendous pad rattle?
I have 7.9" vented disc's with the supplied mintec pads and it sounds like a horse trotting down the road! Its driving me insane as its not just a litte bit, its like someone is shaking bolts/nuts in a metal tin!
Called minisport and they said it's just how they are designed, EBC pads won't be any different and I should bury everything that isn't a friction surface in copper grease... sounds like a bodge to me?!
500 quid and I'm starting to wish I never bought them!
Hoping someone has a magical resolve!

#2 Midas Mk1

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Posted 28 March 2025 - 11:07 PM

Pad knock? it’s normal, abundant flats greased? using ceramic brake grease helps over copper for the knock.

#3 Spider

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Posted 29 March 2025 - 05:33 AM

Coming from that company, I'm not surprised at what you have and their response.



#4 imack

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Posted 29 March 2025 - 07:45 AM

I'm not familiar with the minisport caliper, but would it not be possible to fit the original anti rattle spring plates from the metro calipers - assuming they're still available.
I have the KAD 7.9" calipers and I'm certain the springs could be fitted to them if needed.

#5 nicklouse

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Posted 29 March 2025 - 08:56 AM

It is poor caliper design. They flex. 



#6 Steve220

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Posted 29 March 2025 - 10:00 AM

I'm not familiar with the minisport caliper, but would it not be possible to fit the original anti rattle spring plates from the metro calipers - assuming they're still available.
I have the KAD 7.9" calipers and I'm certain the springs could be fitted to them if needed.


That's what I did on my KAD calipers because it started to sound like the car falling apart.

#7 imack

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Posted 29 March 2025 - 12:23 PM

These are the spring plates from the metro turbo calipers.

Attached Files



#8 imack

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Posted 29 March 2025 - 12:25 PM

I'm not familiar with the minisport caliper, but would it not be possible to fit the original anti rattle spring plates from the metro calipers - assuming they're still available.
I have the KAD 7.9" calipers and I'm certain the springs could be fitted to them if needed.


That's what I did on my KAD calipers because it started to sound like the car falling apart.

I'm surprised you're pads rattle in the KAD calipers. Both my Mintex 1144's and the previous Ferrodo pads are a perfect snug fit.

#9 Steve220

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Posted 29 March 2025 - 12:46 PM

I'm not familiar with the minisport caliper, but would it not be possible to fit the original anti rattle spring plates from the metro calipers - assuming they're still available.
I have the KAD 7.9" calipers and I'm certain the springs could be fitted to them if needed.

That's what I did on my KAD calipers because it started to sound like the car falling apart.
I'm surprised you're pads rattle in the KAD calipers. Both my Mintex 1144's and the previous Ferrodo pads are a perfect snug fit.

I've got the K4 race calipers, there's a bit more play in them. But my rattle turned out to be more the floating discs. I've got anti rattle springs on order.

I bought a set of the pad shims from Somerford Minispares, they fit perfectly on the alloy calipers.

#10 Torqu-E-Cycles

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Posted 29 March 2025 - 11:25 PM

Thanks guys, I didn't even think to try the original pad retainers! My first thought was to try make some shims but quickly decided that wouldn't end well but I guess a sprung steel retainer pushing between the split pins and the pads as per original should do the same job on these.... will give it a go!

#11 bpirie1000

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Posted Yesterday, 07:03 AM

May even be able to sell the Patent to mini sport....

#12 beardylondon

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Posted Yesterday, 09:36 AM

There’s a reason Mini Spares support the forum and not Minisport! As above I’m not surprised.




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