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Every once in a while a large bubble would pop out of the lever- often when I was absolutely certain that the system was fully bled.
Biggest fustrastion about hydraulic in general is that they do need time/coaxing to get rid of the bubble or at least minimise it within a short time frames in a bicycle workshop.
I’ll drop off the pads next week, I’m not too far in Catford.
edscoble
hippy
I’ll be riding both bikes (weather permitting) this weekend, hopefully - and what I hope to find is that the brake I bled feels as good (firm, nice crisp bite point) as it did when bedding the brake in. Of course, the lever may go to the bar tomorrow morning, but it’s held pressure since I bled it so fingers crossed there.
If it’s worked then my take on how to bleed a Magura is to take your time. I found that waiting for tiny bubbles to make their way (ever so slowly) to the top of the mineral oil was essential to prevent said cloud of tiny bubbles being sucked back into the lever, for example.
I also spent a long time gently pulling and pushing oil through the system whilst moving the lever from horizontal to around 30 degrees declined, flicking the lever every now and again.
Every once in a while a large bubble would pop out of the lever- often when I was absolutely certain that the system was fully bled.
I left the bike in the stand for hours- started the process, went on a Zoom call, did some more pulling and pushing, next Zoom call- probably around four hours passed.
I doubt any bike shop would be able to afford to tie up a stand for that long, but I was still seeing the clouds of tiny bubbles well into the third hour. Tiny bubbles squished together form a large bubble, of course.
I found holding a powerful torch behind the upper reservoir enabled me to see when the liquid was fully clear of air, and moving the fluid through the system very slowly and carefully seemed to help prevent sucking air in.
Anyway! We shall see, if the rear brake stays feeling this good I’ll bleed the others, and hopefully my Maguras will work as designed (at last).