Clawz114

Well, he obviously wasnt trying to trick people into wondering... hmm does he mean, would i prefer halfords disc brakes, or Maguras with epic pads was he? It's either Hydraulic rim or Hydraulic Disc. Simple as that. Just imagine the best Magura youve ever used, or the best disc youve ever used, and which would you prefer. Or think of the worse disc youve ever used, and the worse magura youve ever used and compare. A poll this simple, shouldnt need to be explained I voted Double Disc by the way!

Something along those lines. Either way, they arnt around anymore.

For the people moaning about the color, it comes in black too...

I also prefer it, because when the back tyre gets worn, i can swap them over without having a thin tyre on the back and a wide tyre on the front

I wondered what song this was too...

Check page 1/2. Just because theres more pad area, doesnt mean that theres more friction or it will slow the rotor down faster. Theres a few examples on pages 1 and 2 and here... http://www.physlink.com/education/askexperts/ae140.cfm

I have to say, JT!'s explanation sounds right imo. But whatever the answer is, its obviously a lot more confusing than i thought it would be

But we are talking about the same amount of force? Surely if you are pulling the brake lever the same amount on each setup, its applying the same amount of force, which means 4 pads (double the pad area) is exactly the same as 2 pads? *wishes JT! would bring some more input in, as he seems to know a lot about friction/force and stuff *

For the win

I never knew that... JT! You appear to be correct on the friction thing. So taking into account, that friction is the same, regardless of area. Isn't having 2 calipers with 4 pads, the equivalent of having 1 caliper with 2 pads that are double the size each?

Sorry, i should have specified in detail a bit more. The lever would not be a special modified lever, it would just be a standard lever which is meant for a single caliper. I can't understand how it would be twice as powerful... If you had 10 bikes lined up, with all the disc brakes connected to the same lever, each piston would be moving 10 times less than it usually moves. Are you telling me in this scenario it would have the power of 10 calipers?

So is the conclusion; No it would not be twice as powerful? What is the reasoning for this?

Poll added!

I also presumed that it isnt twice as powerful, due to the lack of avaliable products allowing this setup.

Thanks for your input! The pad area does matter. If you held the brake on very gently so the pads were rubbing the rotor but not stopping it instantly, ofcourse it would make a difference how big the pads where. If it was the size of the back of a pushpin, vs the size of a 50p, the bigger pad would have more contact on the rotor, causing more friction, which in turn would slow the rotor down faster than the smaller pad. This may be different if you just yanked the brake on, but for gradual braking, the bigger pad would be more efficient.

I already know its avaliable/used to be avaliable, but that wasnt the question

Thanks for your input

Your missing the point. It doesnt matter how well it can stop you. The question was, would the brake be twice as powerful? For example, if you stood the bike up and tried to turn the wheel while the brake was on with 1 setup, then tried it with the dual discs etc. Im not talking about general riding, because everyone knows that 1 disc brake is powerful enough. This was just an imaginary scenario Not sure why, but that made me laugh

Thats exactly what i said. Half the power to each one, meaning half the heat to each rotor?

If you can supply me with a hub with 2 rotor mounts, forks with 2 caliper mounts, 2 idential disc brakes and a hose splitter, i would be more than happy to try it

Wheres Spelling Bee when you need him?

Can i just remind you that we are talking about £2

Or spend £2 on some proper rimtape that will last forever, in the color you want and in the size you want.

Hi! I was out the other day with my mates, talking about brakes, and the 3 of us got into an argument about Hydraulic Disc brakes. The scenario is this; Me and 1 of my other friends say NO. My other friend is convinced that it would be twice as powerful. I believe that it would only be slightly more powerful as there would be twice the amount of friction due to there being double the amount of pad area. But it wouldnt make it anywhere near twice as powerful. Surely the power you put into the brake lever gets "split" in 2 as it hits the hose splitter, giving each caliper half of what it would usually get, therefore making each one half as powerful, so together the 2 calipers have the combined power of 1 on its own? Opinions?

Thanks! You can get them from the "Wolly Hat Shop" if you are interested! haha, yeah. The cost of the parts from new equals around £1800 now... Why not? haha, they would get dirty veeeery quickly