Two-Stroke pipes,
Hand Built, Stamped and Hydro-Forming
Hydro Formed Pipes
VS.
Hand Built
Pipes and
Stamped Pipes
Very often in the
pursuit of a new tuned pipe system, a potential
customer will ask “What is Hydro-Forming”. The
Nemesis Hydro-Form process which we call “Free
Form Hydro-Forming” is unique in that
tooling is not required and lead times are short.
Also a design can be changed quickly without a major
cost penalty.
A Hydro-Formed pipe
can be recognized by a small smooth weld seam around
the edge of the pipe. Also the surface of the pipe
is smooth without any obvious steps or abrupt
dimensional changes.
The manufacturing process is simple and quick. The
pipe design is constructed in the computer with our
own custom software. A computer cutting file is
sent to a sheet metal Cutter (laser). Two exact
metal sheets are cut in the shape of the design.
Next these two sheet metal parts are fused together
with a custom semi robotic welder. The metal
sandwich is then hooked up to a water pump, placed
in a simple low pressure press and blown up like a
water balloon. The blown shape (pillow) is finished
off at each end, painted and we now have a tuned
pipe for your favorite hi-performance two-stroke go
fast machine.
What is a
hand built pipe? The hand built pipe uses
pre formed and constructed cones and cans. The
cones and the cans are welded, cut and welded many
times to get them in a shape that will fit in or on
the vehicle. They are labor intensive, expensive
and often compromised in design to get them to fit.
They are easy to recognize as they have many weld
seams around the pipe.
What is a
stamped pipe? A stamped pipe is made up
of two more stampings formed with a press and a
die. The two formed pipe halves are welded together
at a lip on the edge of each half of the pipe
stamping. The Process is inflexible and needs to
make a number of pipes to justify the tooling cost.
The stamping process stretches the metal into
thinner and weaker sections. A stamped pipe can be
recognized by the flat lip or seam along the outside
edge of the pipe.
