Magura Brakes Adjustment
DAVID WILLIAMSON
1. Should they scrape when wheel is spun ?
2. How can I adjust them (I know Magura have a web site but everytime I go
there my PC crashes).
Thanks in advance David...
Adam Dugmore
"DAVID WILLIAMSON" <david.w...@c2i.net> wrote in message
news:S_1e9.3147$TK2.2...@juliett.dax.net...
They shouldn't drag - most of the Julie's I've fitted I've been able to
set-up to run silently
You'll be able to adjust the position of the caliper by changing some of the
shims (I am assuming you have International Standard mounts, not the Hayes
type) so that the pads don't rub.
IIRC the Julie is an open system and pad reach is not adjustable, though
lever reach is on the aftermarket models (alloy lever blade).
--
Adam Dugmore
Kona Explosif
Honda CB500R - much easier uphill
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russell.pinder
Adam Dugmore <adam.d...@SPAMSUCKSbtinternet.com> wrote in message
news:alb55d$2r5$1...@venus.btinternet.com...
>
> "DAVID WILLIAMSON" <david.w...@c2i.net> wrote in message
> news:S_1e9.3147$TK2.2...@juliett.dax.net...
> > Hi, Can anyone help me with my Magura julie brakes ?
> > 1. Should they scrape when wheel is spun ?
> > 2. How can I adjust them (I know Magura have a web site but everytime I
go
> > there my PC crashes).
> > Thanks in advance David...
> >
> >
>
> They shouldn't drag - most of the Julie's I've fitted I've been able to
> set-up to run silently
Isn't a julie a cheapo system with a single piston that works by pushing the
disc against the fixed pad and should therefore have a small amount of
drag - I'd been led to believe it was one of the disadvantages of Julies and
why most people who had them swapped them for hope after a couple of months.
Russ
Adam Dugmore
"russell.pinder" <russel...@yahoo.co.uk> wrote in message
news:aldp68$1m0aea$1...@ID-151972.news.dfncis.de...
No, they're twin pots (http://www.magura.com/english/bremsen/julie_2001.htm)
and as such are not designed to drag, assuming rotors are true etc.
They're far easier to look after than Hopes - since they use mineral oil
over DOT4 they're virtually fit and forget in terms of fluid changes and
it's far less unpleasant if you do have to bleed them.
Out of the box, I've found some of them to outperform Hope Minis in sheer
stopping ability, in spite of those horrid resin lever blades and, at a
fraction of the cost, it's easy to see why so many people like them.
Guy Chapman
> 1. Should they scrape when wheel is spun ?
Mine don't scrape but they do touch - all disk brakes will touch as the
wheel rotates (car ones do as well). The piston is retracted by the disc
pushing against it, so the pad is always left in contact or near-contact
with the disc.
> 2. How can I adjust them (I know Magura have a web site but everytime I go
> there my PC crashes).
It's a disc brake, you don't need to once the unit is installed.
Now, I didn't know that my Magura Julies are hydraulic (don't laugh, they
came on a bike I only bought yesterday, and details about braking weren't a
key factor in the buying process). The second port on the body casting is
open; this is not what I would expect in a hydraulic brake, so I'll be
looking for something to block it up and keep the gunge out. Is there a
fitting in the second hole on yours?
Guy
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Adam Dugmore
"Guy Chapman" <spam...@chapmancentral.com> wrote in message
news:VA.000004f...@chapmancentral.com...
> In article <S_1e9.3147$TK2.2...@juliett.dax.net>, David Williamson
wrote:
>
> > 1. Should they scrape when wheel is spun ?
>
> Mine don't scrape but they do touch - all disk brakes will touch as the
> wheel rotates (car ones do as well). The piston is retracted by the disc
> pushing against it, so the pad is always left in contact or near-contact
> with the disc.
They're actually retracted by springs (this is certainly true in the case of
Hope's open systems and I suspect so of Magura's too) and should therefore
retract clear of the rotor.
> Now, I didn't know that my Magura Julies are hydraulic (don't laugh, they
> came on a bike I only bought yesterday, and details about braking weren't
a
> key factor in the buying process). The second port on the body casting is
> open; this is not what I would expect in a hydraulic brake, so I'll be
> looking for something to block it up and keep the gunge out. Is there a
> fitting in the second hole on yours?
There is a grub screw in the other hole, if there was nothing in there your
fluid would ooze out as soon as you touched the lever.
This screw provides the seal and facilitates bleeding.
When the brake is being filled with fluid or bled, the grub screw is
replaced with a fitting which is connected to a tube and a syringe filled
with mineral oil.
--
Adam Dugmore
Kona Explosif
Honda CB500R - much easier uphill
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Guy Chapman
> They're actually retracted by springs (this is certainly true in the case of
> Hope's open systems and I suspect so of Magura's too) and should therefore
> retract clear of the rotor.
OK, fair enough - mine still touch gently, but it doesn't affect the ride.
> There is a grub screw in the other hole, if there was nothing in there your
> fluid would ooze out as soon as you touched the lever.
> This screw provides the seal and facilitates bleeding.
This much I know - I am well used to working on hydraulic brakes on cars.
Guy
===
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