Mtb Disc
Mtb Disc
if i lost fluid adjusting my MTB Disc Brakes do i need to bleed them?
just got my first bike with disc brakes.(Avid Juicy 3′s) during assembly i first had trouble getting the calipers to open so i could insert the rotor then after gettting it in there was drag. the instruction manual sucks and when i was attempting to adjust the brakes some fluid leaked out(normal?) it wasnt much maybe a teaspoon over a few attempts at adjustment. now the brakes do not have much power. i have never worked with disc brakes before but have worked on many MT bikes. so to sum it all up did i leak to much fluid and now need to bleed?
You have a massive amount of air in the line and they DO NEED TO BE BLEED! The only way is to do it the right way and that means you need an Avid juicy bleed kit, no other will work and if you dont use the correct fluid you will void the warranty and damage the seals in the handle. You should have never needed to “get the calipers open” as you put it in the first place. These should have had a spacer between them if the wheel was off the bike and if you pulled the bike out of a box to build it then the spacer either fell off or out in shipping or it was not included when packed. You did not need to let fluid out of the brake line to get the pads apart, that was your mistake. Since it is obvious that you dont know how to bleed Juicy brakes then I strongly suggest that you take the bike to a shop that does- not for a first timer! I use Juicy Ultimate and Juicy 7 brakes and Shimano XT hydraulic and have worked on them for several years now and never have I had to open a line to get pads apart!
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Disc Brakes Or Rim Brakes
This can be a very important decision when you are buying a mountain bike. There are actually two answers to the question of disc brakes or rim brakes.
If you want better, more consistent brake performance in all conditions, disc brakes are what you should be choosing. On the other hand, if you want the lightest set up you can have and you are willing to accept small variances in brake performance, or you want the lowest price possible, rim brakes are what you should be choosing.
Over the years, mountain bikes have gone through many design changes. They started out with the original Cantilever Brakes, then went through the U Brake years, and are now with V Brakes. In most conditions, the V Brakes seem to work well.
In wet or muddy conditions, rim brakes will perform poorly. Over time, they can wear right through the side of your rim, causing the side of the rim to blow right off.
Disc brakes on the other hand have been around for a long time in cars but weren’t used on bikes much until the late 1990′s. There were some issues in the earlier models, although the cable actuated or hydraulic brakes of today seem to work quite well.
In terms of performance, disc brakes seem to work better than rim brakes, especially in wet or muddy areas. Disc brakes normally require less force to apply and aren’t effected by the rim or wheel condition.
Cost is an issue, as disk brake systems tend to be more expensive than rim brakes. Mechanical or cable actuated brakes are a closer match, although they will still cost more. Hydraulic brakes on the other hand cost a lot more.
When you make that final choice, weight out the above options then make your decision. Some riders prefer disc brakes, while others prefer rim brakes – making it a matter of opinion.
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