How long does it take to bleed a brake
bazmcg
Posts: 95
I bled a disc brake for the first time today. I bled the rear brake on my bike, it's a Hope Mini. I followed the instructions in the manual word for word, but after 2 hours of filling the resvouir, opening the bleed nipple, pulling the lever, closing the nipple, releasing the lever, there was still air bubbles in the fluid coming from the bleed nipple. At this stage I had used the entire 250ml bottle of DOT 5.1 fluid so I gave up. How long does it normally take to bleed a disc brake?
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Not that long!
Sounds silly, but are you making sure there is no air in the syringe when you pump it in? :?Wheelies ARE cool.
Zaskar X0 -
You don't need a syringe to bleed Hope brakes.
It took me 30 mins to do F&R Mono Mini's a while ago & it was my 1st time.
Not sure where you went wrong as it sounds like the technique I used & mine worked fine.
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Current:
NukeProof Mega FR 2012
Cube NuRoad 2018
Previous:
2015 Genesis CdF 10, 2014 Cube Hyde Race, 2012 NS Traffic, 2007 Specialized SX Trail, 2005 Specialized Demo 80 -
The manual stated that the hose going into the empty container from the bleed nipple doesn't need to have one end submerged in fluid. I saw mentioned else where that it should be to stop air going back into the system. Is that correct?0
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I had bother trying to bleed my Hope Mono mini's to the extent that after about three hours I gave up and its now with the bike shop,it doesn't matter about the hose going into a jar part filled with fluid,you don't need to have the end submerged,however they are very fussy as the smallest air bubble gives you a crap lever feel,mine touch the handlebars,I've fitted goodridge hoses hence the bleed but they wasn't brilliant before.
You can use compressed air via an adapter to the resovoir that forces fluid through the system,a kit that Hope supply,but I don't fancy that method.The bike shop use a syringe.I've bled dozens of brakes on all makes of car as I used to work in a garage but these had me beat! I had to have my Avids bled which are even trickier as I swapped these from my orange to my rockhopper(long story) and I hate to say this but the juicys fives are so far much,much better than the Hope's despite the Hope's great machining and me being patriotic! I hope the shop bleed and braided hoses make them shine,my advice is don't waste your time and fluid,take your bike to a good bike shop.0 -
You need to close the nipple while you are still moving the lever, i never wait till the lever is all the way to the bars. Also only undo the nipple a quarter of a turn as if you go any further air can get past the threads.
Takes about five or ten minutes to bleed both ends of my bike.0 -
Simple method of bleeding brakes, in my opinion can be used for any brake system.
First get yourself a clean glass jar and a length of pipe that will push onto the bleed nipple, preferably a nice tight fit so air won't be drawn in and long enough so the jar can be positioned somewhere safe. Position the brake lever so that the reservoir will be level, and remove the reservoir lid. Connect the length of pipe onto the bleed nipple and put the other end into the glass jar, pour some fresh brake fluid (whatever is specified by manufacturer of the brake system) into the jar so that it covers the end of the pipe.
Check that the reservoir is full then undo the bleed nipple, normally half a turn or more dependent on system. Then keep an eye on the fluid level in the reservoir and keep it topped up, do not pump the lever, if you look in the jar you should see air bubbles these will be out of the length of pipe at first but you should see that these bubbles then stop keep checking and topping up the reservoir until your sure there are no more air bubbles and you can see that the brake fluid has passed through the system. Brakes should know be bled tighten up bleed nipple and re-fit reservoir lid.
Hope this helps, this method worked on my Hope Minis0
