C
Clive George
Guest
"Artemisia" <[email protected]> wrote in message
news:[email protected]...
> Thanks for all the answers, but I'm a bit out of my depth in all this
> technical talk.
Oops, sorry, most of it wasn't at all relevant to your original request.
> Might someone explain:
>
> What is brake "bleeding" and why is it necessary (or not)?
Hydraulic systems work using fluids which are pretty much incompressible.
Air is the opposite - if you increase the pressure, a given lump of air gets
smaller - which you can see with a bike pump. If you get air in the brake
system, it won't work nearly as well. Bleeding is the process of getting rid
of air, which basically involves pushing fluid through until there are no
more bubbles.
And if you've got it set up right for you, you won't ever need to do it.
> What are maggies? HS33s? What kind is Magura Big?
"maggie" is I believe short for Magura, HS33 are their rim brakes, so
irrelevant to your application.
> What does "open" and "closed" mean?
A closed system has a piston at each end of a pipe. Move the piston at one
end, it will move at the other - conventional hydraulics there. However if
you warm the fluid up, it will expand, and the two pistons will move apart -
which may not be a good thing.
An open system is more like what a car has. There's a small reservoir at the
top, and when the brakes are off, the pipe is connected to that, allowing
expansion and contraction of fluid (and automatic adjustment of pads).
> What is a rim brake? I don't think any are on offer for my
> Scorpion...?
A rim brake is like what you have on normal bikes - the pads are applied to
the rim.
> I hope I can delegate any eventual problems and adjustments to my bike
> mechanic? Ditto for eventual maintenance? If I buy the brakes as part
> of my initial setup, do I still have to do all sorts of adjustments
> and setups on my own? See, I don't feel confident to tackle all this
> new science and don't have time to take a qualifying degree in bike
> maintenance (that my have to wait till I retire!).
Yes, you should be able to.
cheers,
clive
news:[email protected]...
> Thanks for all the answers, but I'm a bit out of my depth in all this
> technical talk.
Oops, sorry, most of it wasn't at all relevant to your original request.
> Might someone explain:
>
> What is brake "bleeding" and why is it necessary (or not)?
Hydraulic systems work using fluids which are pretty much incompressible.
Air is the opposite - if you increase the pressure, a given lump of air gets
smaller - which you can see with a bike pump. If you get air in the brake
system, it won't work nearly as well. Bleeding is the process of getting rid
of air, which basically involves pushing fluid through until there are no
more bubbles.
And if you've got it set up right for you, you won't ever need to do it.
> What are maggies? HS33s? What kind is Magura Big?
"maggie" is I believe short for Magura, HS33 are their rim brakes, so
irrelevant to your application.
> What does "open" and "closed" mean?
A closed system has a piston at each end of a pipe. Move the piston at one
end, it will move at the other - conventional hydraulics there. However if
you warm the fluid up, it will expand, and the two pistons will move apart -
which may not be a good thing.
An open system is more like what a car has. There's a small reservoir at the
top, and when the brakes are off, the pipe is connected to that, allowing
expansion and contraction of fluid (and automatic adjustment of pads).
> What is a rim brake? I don't think any are on offer for my
> Scorpion...?
A rim brake is like what you have on normal bikes - the pads are applied to
the rim.
> I hope I can delegate any eventual problems and adjustments to my bike
> mechanic? Ditto for eventual maintenance? If I buy the brakes as part
> of my initial setup, do I still have to do all sorts of adjustments
> and setups on my own? See, I don't feel confident to tackle all this
> new science and don't have time to take a qualifying degree in bike
> maintenance (that my have to wait till I retire!).
Yes, you should be able to.
cheers,
clive