Why change your mountain bike brake hoses ?
Despite
what the salesman tells you - every modern mountain bike has
compromises normally instigated by accountants rather than
engineers. One such compromise is the materials used for the brake
hoses on your mountain bike. Our brake lines use the finest
materials - only Stainless Steel fittings on stainless steel hose
AND we are the only manufacturer to offer kits with our 'self
swage' concept - this means that the process we use to make all of
our other hoses is the same idea used on our mountain bike lines.
Why don't HEL use the 'screw together' fittings like other
companies ?
Because
we know that the best brake hose (and remember we are
talking about the brakes here) is one which cannot be tampered with
after it has been manufactured. This is why when we started making
brake lines for motorcycles we broke the mould and were the FIRST
manufacturer in the UK to offer swaged only brake hoses - and all
of our competitors quickly followed our lead and replaced their
reusable fittings with swaged or crimped fittings as well which
kind of tells you something about reusable versus swaged / crimped
fittings really....
But
then some of them wanted in on the Mountain Bike scene as well so
quickly did an about turn and started offering reusable fittings
again....
Where
as HEL Performance took a little bit more time, a little bit more
design effort and came up with a system to allow you to
manufacture a complete swaged brake hose for mountain bikes in
your own garage with the aid of a vice. What you get is the
smallest, lightest, most secure fitting available anywhere in the
world...
Why doesn't HEL offer aluminium brake line fittings ?
Because
it's a dangerous. It may be lighter than stainless BUT what these
manufacturers don't tell you is that aluminium does not mix well
with the stainless steel hose - in fact the aluminium WILL
corrode if water is in contact with both materials - And lets face
it, if you don't get muddy water on your mountain bike then you
just aren't riding it are you ?
Electrolytic
corrosion works on the same principles as a battery. Two metals,
an anode and a cathode, are placed in fluid and an electrical
reaction takes place which results in the softer metal being
eroded due to electrolytic corrosion. Once these conditions are
met, a "corrosion cell" is created, an electrical
current will flow and metal will be consumed at the anode. The
only way to remove this corrosion is by using metals of the same
electromotive force (EMF). HEL Performance only ever use stainless
steel or titanium fittings on stainless steel hose for our brake
lines which keeps the EMF constant across the system eliminating
electrolytic corrosion.
|
Electrolytic Corrosion Of
An Aluminium Fitting |
This
image shows the results of electrolytic corrosion of an aluminium
fitting when connected to stainless steel hose. Corrosion
has resulted in half of the fitting breaking away - if
this line had been left on a bike which was charging
downhill the results could have been fatal. Do not
use aluminium fittings on your mountain bike. |
For
example, Aluminium has an EMF of +1.66 volts and stainless steel
an EMF of -0.34 volts. When these two metals are in contact in the
presence of a fluid (rain water etc) the electrolytic corrosion
outlined above must take place resulting in the erosion of the
anode (the positively charged metal in which in this case is
aluminium). The greater the difference between the difference in
the EMF's of the two metals the greater the level of corrosion.
In the
case of an aluminium brake part this could lead to catastrophic
results in the failure of the brake system. Again we reiterate
that you should never use aluminium brake line fittings on
any bike even for race use. The minimal weight saving obtained
by using aluminium fittings is insignificant especially when
viewed against the real dangers and risks involved when,
and we mean when, the fitting corrodes.
Do
not use aluminium fittings on your brake system.