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If the old pads were worn and one of the pistons was a bit sticky, the other one could move far enough for the seal to be ineffective. Normal pad spacers are a little thinner than a pound coin, but as they sit in the caliper slot the pistons can't come further out than 1mm from the centreline.
Emyr-
Dont think that's the case, they are as good as new pads as I put them in a month prior to the Euros. And with the coin spacer, it was pretty much dead center.
Since we are on the subject matter, I won one of these at one of the polo tourneys and gave them away! http://www.wiggle.com/birzman-protective-front-fork-spacer/
:(
coventry_eagle
Was traveling with the bike last week, fine on the flight out and not so fine on the flight back. Had an improvised spacer (pound coin) between the pads to keep the spacing in the event that the lever is squeezed while the wheel is out.
Didnt notice that the inner piston leaked at the seal and only noticed it once I rode the bike - squealing under braking, brake loss etc... Touched inner side of rotor, confirmed that's there's a thin layer of oil, nothing on the outward facing side. Ditched pads, sprayed rotor with brake cleaner and wiped down caliper with rubbing alcohol put new pads in and all good now. Didnt even need a bleed.
What I think happened was that the lever must have been squeezed quite hard (probably when they chucked the bike when loading/unloading. This is with the lever removed from my bars and hidden (+ zip tied) in between the spokes of the wheel.
Anyone experienced something similar before?