UltraMaxx
is the trade name of a revolutionary new convertible
top developed by GAHH Automotive. Incorporating a
patent pending method for the installation of the
window, UltraMaxx virtually eliminates window
separation and leaks. The process is so reliable
GAHH is able to offer a LIFETIME WARRANTY. The
UltraMaxx manufacturing system also eliminates the
stitching, piping and pressmarks commonly found
around the window on all aftermarket tops.
GAHH UltraMaxx Window
"UltraMaxx, the best built, best looking tops
available today!"
BACKGROUND
In the early days, when convertible tops were only
available with plastic windows, installation of the
window was easy….simply sew the plastic into the
topping material.
However, with the advent of glass window tops things
got more complicated. Sewing was out of the question
so a method of adhering or “gluing” the topping to
the glass was required. This was very difficult
because glass, due to its inherent nature does not
want to stick to anything and topping material is
engineered to repel everything that tries to stick
to it.
Several methods of installation were developed but
eventually most car manufacturers adopted a process
called “heat sealing”. This involves placing a
plastic tape between the glass and the topping. The
assembly is then placed in a moulded press and
electricity is applied until it heats the tape to a
point where it melts, “sealing” the glass to the
topping.
The unpredictability of this process results in a
high failure rate of the bond. Occurring over time,
this failure can result in the window completely
falling out of the top or it may fail only to the
point of leaking water into the car.
Heat Sealed Window With Piping and Stitching
When the aftermarket manufacturers of convertible
tops began to produce glass window tops most chose
to use the heat seal method developed by the OEM’s.
They, like the OEM’s, continue to have mixed results
with this process and failures still occur on a
regular basis.
Some aftermarket manufacturers, due to the cost and
complexity of the heat seal process, use adhesive or
“silicone” to stick the windows into the topping. A
process prone to be even less reliable then heat
seal. Several years ago, GAHH Automotive decided
that a better method of installing glass windows was
required.
PROBLEM SOLVED
Our engineering team set out to develop a process
that would address the problems of separation and
leakage with a side benefit of a more “factory
finished” look. After 1000's of hours of
researching, prototyping and testing, GAHH has
developed a new patent pending process that
virtually eliminates all of the inherent problems of
heat seal or silicone.
This process is so unique that completely automated
equipment also had to be designed in order to
manufacture the tops. While the actual process is
complicated and proprietary we can say that it
involves wrapping the topping around an internal
support structure and adhering the glass to the
resulting assembly with a special bonding agent
developed specifically for this purpose. The result
is an extremely strong bond between the glass and
the topping with no stitching or piping.
Trademarked as UltraMaxx, these tops have set a new
standard in the industry