Let's offroad / mountain bike / mtb / ride dirt

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Dammit in reply to @TotalShanner

I think pad contamination is the likely culprit. Indeed even a tiny amount of chain lube etc will ruin the pads. It's also worth looking in at the pistons to check there's no small leak causing brake fluid to contaminate the pads.

Well, both bikes will have brand new pads and freshly scrubbed rotors, lets see if that works or whether Tarty Bikes was correct and once used with contaminated pads you should bin the rotors and start totally from new.

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furious_tiles in reply to @Dammit

Don’t believe that’s true.

I was once very stupidly working on my Capra in the stand and my cross bike with discs was leaning up behind it.
I had just cleaned it so was lubing the chain and spraying some silicon polish on the fork/shock/dropper stanchions.

When I next used the cross bike and the rear brake didn’t bite in the slightest I realised what I’d foolishly done.

Removed the pads and disc, blasted the calliper with disc brake cleaner, scrubbed with a scourer and fitted new pads. Worked just fine after bedding them in.

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