Magura pad wear

TheRealPoMo

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Anyone's old pads look like this on your 4 piston units? Small unworn bit where it does not contact disc.
20200705_124201.jpg
 
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you have your caliper spaced too far out.
change to the correct adapter or remove spacers
 
Yeah I thought that but it is as the factory put it, which is why I asked other owners.
There's no spacers as such, just the adaptor between the caliper and the fork leg.
JPEG_20200705_152805_5870239983927922659.jpg

That probably explains the persistent zinging noise - outside edge of rotor touching side of unworn pad.
 
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Well, I believe it's a 200 rotor (from the specs). I'll see if I can verify with part numbers. I would think mine would not be the only one though given the whole shebang is OEM.
Maybe I'll grind 2 mm of the face of the adaptor bracket.
Maybe I'll ask the LBS I bought it from.
 
OK, turns out it's a 180.
All the part numbers check out for that combination.
The new pads now installed don't appear to have the same degree of overlap of the disc - vernier calipers say maybe about 0.4mm, though it is a fiddly measurement to make.
I'll ask the "experts" at the shop but if I have to take the pads out every now and again and grind the unworn material off, I can live with it.
Worst case I can grind a mm or so off the bracket face, though if I don't get it perfectly flat and square I'll probably have issues adjusting caliper position..
At least I think I found the "zing" - I know others have had this so maybe that helps.

...or I could look into a 203 setup - doesn't look to dear and might help going down the eastern Camp Mountan break....
 
the pad material shouldn't have ANY overhang on the outer disc

I'd just file 1.5mm off each side of the adapter
 
the pad material shouldn't have ANY overhang on the outer disc

I'd just file 1.5mm off each side of the adapter

Yeah I know - It'l nag me if i don't.
I guess I couldn't go too far wrong with emery paper on a glass plate.
What nags me more is why it left the factory like that.
 
emery paper? I'd just use a hand file

Magura do lots of stupid things
 
Yeah I thought that but it is as the factory put it, which is why I asked other owners.
There's no spacers as such, just the adaptor between the caliper and the fork leg.View attachment 35001
That probably explains the persistent zinging noise - outside edge of rotor touching side of unworn pad.
What happens if you put that spacer on the other way around?
 
What happens if you put that spacer on the other way around?
No spacers - just the adaptor. It specifically says "this side up" so can't monkey with that.
Ordered a 203 disc and adaptor so I'll see how that goes.
 
Put the 203mm disc and adaptor on.
The 203 adaptor QM42 needs shorter retaining screws to the fork than the stock 180 one so I had to improvise some spare 316 allen screws and a couple of washers.
Also changed the pads from 9.P to 8.P. The 8's use retaining pins (included) and are 4 descrete units rather than a set of 2 with 2 pads on each.
It looks as though there is not as much overlap of the pad to the disc now - I guess a bit of wear will show.

Bit of a bargain really - about $55 AUD for the adaptor and the disc.
20200812_140342.jpg
 
the pad material shouldn't have ANY overhang on the outer disc

I'd just file 1.5mm off each side of the adapter
Lol Gary, how many people have a metal file let alone a vise for holding the adapter these days.
If I was still lived with my ex wife I could of set it up in my milling machine and accurately machine it to size.
That's just showing off though.
Cheers, Mark
 
Having a difficult time here...any thoughts? Thanks in advance.

Front and rear MT5, Magura HC 203mm on both F/R I have the 180 to 203 adapter on the rear. the pads are level with the top of the rotor on both front and rear calipers so I am at least fairly confident I have the correct adapters.

2020 Levo SL


IMG_1040.jpg
 
As I replied in the other thread, so won't repeat. a picture of the caliper on the bike might help though?
 
I Have a totally stock 140 Race 625 with (based on the build spec) 203 rotors. Just took the pads out for the first time yesterday and have the same issue i.e lip/unused material at the top of the pads and a zinging noise from the rotors. As others have said there is no adjustability in the system that I can see other than calliper L/R but not up/down so a bit lost.. Is this a build issue with the incorrect spacer size?
 
Normally the Magure PM adapters have the size printed on the inside, if theres a lip, then the adapter is wrong.
Sounds like 200 rotors with +23mm Adapters.

On my Yeti SB150 I have a Rockshox ZEB, that has 200mm standard so no adapter needed, to get the 203mm rotors, 1.5mm spacers are needed....
 
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