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Never Use Aluminum Fittings On
Braking Systems
Some
people sell aluminum brake line fittings for brake hoses. Not
only is this a dangerous practice but you will also notice that they
are normally sold with a 'for race use only' label as a
possible legal get out clause for the company involved.
HEL
Performance have never and will never use aluminum
fittings on brake lines - Why ? When two metals with different
electromotive force are placed
together and are subjected to an electrically conductive fluid,
'electrolytic' corrosion takes place. If you are looking for a
light weight, corrosion resistant high strength alternative to
stainless steel then we suggest you check out the HEL
Performance Titanium fitting mini site.
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 motorcycle brake lines
which keeps the EMF constant across the system eliminating
electrolytic corrosion.
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Electrolytic Corrosion Of
An Aluminum Fitting |
This
image shows the results of electrolytic corrosion of an
aluminum
fitting when connected to stainless steel hose. Corrosion has resulted in half of the fitting breaking away - if
this line had been left on the vehicle the results could
have been fatal. Do not use aluminum fittings on your
brake lines. |
For
example, Aluminum 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
aluminum). 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 aluminum brake part this could lead to catastrophic
results in the failure of the brake system. Again we reiterate
that you should never use aluminum brake line fittings on any
vehicle even for race use. The minimal weight saving obtained by
using aluminum fittings is insignificant especially when viewed
against the real dangers and risks involved when, and we
mean when, the fitting corrodes.
Do
not use aluminum fittings on your brake system.
HEL
Performance only ever use Stainless
Steel or Titanium
fittings, on stainless
steel hose with either stainless steel or Titanium bolts. So Ride the best you can - Fit HEL
Performance Brake Lines.
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